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Eratosthenes of Cyrene (Ancient Greek: Ἐρατοσθένης, IPA: [eratostʰénɛːs]; English /ɛrəˈtɒsθəniːz/; c. 276 BC – c. 195 BC) was a Greek mathematician, geographer, poet, athlete, astronomer, and music theorist.
He was the first person to use the word "geography" and invented the discipline of geography as we understand it. He invented a system of latitude and longitude.
He was the first person to calculate the circumference of the earth by using a measuring system using stades, or the length of stadiums during that time period (with remarkable accuracy). He was the first to calculate the tilt of the Earth's axis (also with remarkable accuracy). He may also have accurately calculated the distance from the earth to the sun and invented the leap day. He also created the first map of the world incorporating parallels and meridians within his cartographic depictions based on the available geographical knowledge of the era. In addition, Eratosthenes was the founder of scientific chronology; he endeavored to fix the dates of the chief literary and political events from the conquest of Troy.
This page contains text from Wikipedia, the Free Encyclopedia -
http://en.wikipedia.org/wiki/Eratosthenes
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
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Carl Edward Sagan (
/ˈseɪɡɪn/; November 9, 1934 – December 20, 1996) was an American astronomer, astrophysicist, cosmologist, author, science popularizer, and science communicator in astronomy and natural sciences. He published more than 600 scientific papers and articles and was author, co-author or editor of more than 20 books. He advocated scientifically skeptical inquiry and the scientific method, pioneered exobiology and promoted the Search for Extra-Terrestrial Intelligence (SETI).
Sagan is known for his popular science books and for the award-winning 1980 television series Cosmos: A Personal Voyage, which he narrated and co-wrote. The book Cosmos was published to accompany the series. Sagan wrote the novel Contact, the basis for a 1997 film of the same name.
Carl Sagan was born in Brooklyn, New York, to a Ukrainian Jewish family. His father, Sam Sagan, was an immigrant garment worker from Kamenets-Podolsk, Ukraine; his mother, Rachel Molly Gruber, a housewife. Carl was named in honor of Rachel's biological mother, Chaiya Clara, in Sagan's words, "the mother she never knew." Sagan graduated from Rahway High School in Rahway, New Jersey, in 1951.
This page contains text from Wikipedia, the Free Encyclopedia -
http://en.wikipedia.org/wiki/Carl_Sagan
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
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Carl Sagan - Cosmos - Eratosthenes
Carl Sagan - Cosmos - Eratosthenes -
Eratosthenes
EratosthenesEratosthenes
Excerpt from the IBM film "Mathematics Peepshow". -
ERATOSTHENES
ERATOSTHENESERATOSTHENES
-
Eratosthenes The Circumference of the Earth
Eratosthenes The Circumference of the EarthEratosthenes The Circumference of the Earth
A simple explanation of how Eratosthenes measured the curcumference of the Earth in 250BC. You will need this for GCS Astronomy. For more information see AstronomyGCSE.co.uk -
Prime Numbers - Sieve of Eratosthenes
Prime Numbers - Sieve of EratosthenesPrime Numbers - Sieve of Eratosthenes
The Sieve of Eratosthenes is a simple, ancient algorithm for finding all prime numbers up to a specified integer. In this case we are using a 100's chart. -
Great Thinkers: Eratosthenes
Great Thinkers: EratosthenesGreat Thinkers: Eratosthenes
Eratosthenes (c. 276 BC -- c.194 BC) was a Greek scholar nicknamed "Beta." This is because he was considered the second best in so many fields. Despite the dismissive nickname, Eratosthenes is still celebrated to this day for his significant contributions to math, astronomy, and geography. He is perhaps best known for measuring the circumference of the Earth, and for devising the "Sieve of Eratosthenes," a quick method for identifying prime numbers. -
How did Eratosthenes calculate the circumference of the Earth?
How did Eratosthenes calculate the circumference of the Earth?How did Eratosthenes calculate the circumference of the Earth?
How did Eratosthenes manage to determine the circumference of the Earth without going anywhere? Connect with us at: https://www.facebook.com/TheMathCentre https://twitter.com/TheMathCentre https://plus.google.com/112192327939609456055 This video was made in association with The Math Centre at Humber College, by Katherine Muir. -
Sieb des Eratosthenes
Sieb des EratosthenesSieb des Eratosthenes
TAFELAUFSCHRIEBE: http://wiki.zum.de/Benutzer:Cspannagel/Arithmetik In der Arithmetikvorlesung aus dem Wintersemester 2010/11 an der PH Heidelberg spricht Pr... -
The Amazing Eratosthenes
The Amazing EratosthenesThe Amazing Eratosthenes
Eratosthenes measures the earth in 240 BC History, science, math basic geometry for kids -
Circumference & More Geometry
Circumference & More GeometryCircumference & More Geometry
NASA Connect Segment explaining questions about Erastothenes, the Earth's circumference, parallel lines, angle relationships, and a transversal. -
Finding Prime numbers - Sieve of Eratosthenes
Finding Prime numbers - Sieve of EratosthenesFinding Prime numbers - Sieve of Eratosthenes
See complete series on maths problems here: http://www.youtube.com/playlist?list=PL2_aWCzGMAwLL-mEB4ef20f3iqWMGWa25 Sieve of Eratosthenes is a very famous an... -
Prime Numbers - The Sieve of Eratosthenes
Prime Numbers - The Sieve of EratosthenesPrime Numbers - The Sieve of Eratosthenes
Finding all the prime numbers between 1 and 100 using the technique devised by the ancient Greek mathematician Eratosthenes. -
Eratosthenes - Summer Solstice (Flat Earth Evidence)
Eratosthenes - Summer Solstice (Flat Earth Evidence)Eratosthenes - Summer Solstice (Flat Earth Evidence)
http://wiki.tfes.org/Distance_to_the_Sun -
Eratosthenes vs. The World
Eratosthenes vs. The WorldEratosthenes vs. The World
I so loved learning about rockets and getting into space that I continued to delve into physics in the form of a series of lectures by Professor Steven Pollack called Great Ideas of Classical Physics. Amazing stuff! He's good enough to avoid a lot of the mathematics and still give a loser like me a great sense of what it's all about. He recommended trying to figure out how one would figure out the circumference of the globe without today's modern technology. The dog and I tried, but we only got as far as the sun and something to do with shadows before we resorted to the Interweb where we learned all about Eratosthenes and his extraordinary s
- Aglaonike
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- Doubling the cube
- E. H. Gifford
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- La main à la pâte
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- Wikipedia Persondata
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- Carl Sagan
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- Cleostratus
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- Ctesibius
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- Thymaridas
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- Zeno of Elea
- Zeno of Sidon
Famous quotes by Eratosthenes:
"Gracious Bacchus! Accept this empty jar! You will know best, what in pious worship of thee became of all the first"
"Be kind, O Bacchus, take this empty pot offered to thee by Xenophon, the sot, Who, giving this, gives all that he has got"
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Carl Sagan - Cosmos - Eratosthenes
Carl Sagan - Cosmos - EratosthenesCarl Sagan - Cosmos - Eratosthenes
Carl Sagan - Cosmos - Eratosthenes. -
Eratosthenes
EratosthenesEratosthenes
Excerpt from the IBM film "Mathematics Peepshow". -
ERATOSTHENES
ERATOSTHENESERATOSTHENES
-
Eratosthenes The Circumference of the Earth
Eratosthenes The Circumference of the EarthEratosthenes The Circumference of the Earth
A simple explanation of how Eratosthenes measured the curcumference of the Earth in 250BC. You will need this for GCS Astronomy. For more information see AstronomyGCSE.co.uk -
Prime Numbers - Sieve of Eratosthenes
Prime Numbers - Sieve of EratosthenesPrime Numbers - Sieve of Eratosthenes
The Sieve of Eratosthenes is a simple, ancient algorithm for finding all prime numbers up to a specified integer. In this case we are using a 100's chart. -
Great Thinkers: Eratosthenes
Great Thinkers: EratosthenesGreat Thinkers: Eratosthenes
Eratosthenes (c. 276 BC -- c.194 BC) was a Greek scholar nicknamed "Beta." This is because he was considered the second best in so many fields. Despite the dismissive nickname, Eratosthenes is still celebrated to this day for his significant contributions to math, astronomy, and geography. He is perhaps best known for measuring the circumference of the Earth, and for devising the "Sieve of Eratosthenes," a quick method for identifying prime numbers. -
How did Eratosthenes calculate the circumference of the Earth?
How did Eratosthenes calculate the circumference of the Earth?How did Eratosthenes calculate the circumference of the Earth?
How did Eratosthenes manage to determine the circumference of the Earth without going anywhere? Connect with us at: https://www.facebook.com/TheMathCentre https://twitter.com/TheMathCentre https://plus.google.com/112192327939609456055 This video was made in association with The Math Centre at Humber College, by Katherine Muir. -
Sieb des Eratosthenes
Sieb des EratosthenesSieb des Eratosthenes
TAFELAUFSCHRIEBE: http://wiki.zum.de/Benutzer:Cspannagel/Arithmetik In der Arithmetikvorlesung aus dem Wintersemester 2010/11 an der PH Heidelberg spricht Pr... -
The Amazing Eratosthenes
The Amazing EratosthenesThe Amazing Eratosthenes
Eratosthenes measures the earth in 240 BC History, science, math basic geometry for kids -
Circumference & More Geometry
Circumference & More GeometryCircumference & More Geometry
NASA Connect Segment explaining questions about Erastothenes, the Earth's circumference, parallel lines, angle relationships, and a transversal. -
Finding Prime numbers - Sieve of Eratosthenes
Finding Prime numbers - Sieve of EratosthenesFinding Prime numbers - Sieve of Eratosthenes
See complete series on maths problems here: http://www.youtube.com/playlist?list=PL2_aWCzGMAwLL-mEB4ef20f3iqWMGWa25 Sieve of Eratosthenes is a very famous an... -
Prime Numbers - The Sieve of Eratosthenes
Prime Numbers - The Sieve of EratosthenesPrime Numbers - The Sieve of Eratosthenes
Finding all the prime numbers between 1 and 100 using the technique devised by the ancient Greek mathematician Eratosthenes. -
Eratosthenes - Summer Solstice (Flat Earth Evidence)
Eratosthenes - Summer Solstice (Flat Earth Evidence)Eratosthenes - Summer Solstice (Flat Earth Evidence)
http://wiki.tfes.org/Distance_to_the_Sun -
Eratosthenes vs. The World
Eratosthenes vs. The WorldEratosthenes vs. The World
I so loved learning about rockets and getting into space that I continued to delve into physics in the form of a series of lectures by Professor Steven Pollack called Great Ideas of Classical Physics. Amazing stuff! He's good enough to avoid a lot of the mathematics and still give a loser like me a great sense of what it's all about. He recommended trying to figure out how one would figure out the circumference of the globe without today's modern technology. The dog and I tried, but we only got as far as the sun and something to do with shadows before we resorted to the Interweb where we learned all about Eratosthenes and his extraordinary s -
The Sieve of Eratosthenes
The Sieve of EratosthenesThe Sieve of Eratosthenes
-
Sieve of Eratosthenes
Sieve of EratosthenesSieve of Eratosthenes
How to find the prime numbers from 1-100 using the Sieve of Eratosthenes. -
Eratosthenes, the Brilliant Scientist of Antiquity
Eratosthenes, the Brilliant Scientist of AntiquityEratosthenes, the Brilliant Scientist of Antiquity
Eratosthenes (276 - 194 b.C.), director of the Great Library of Alexandria, one of the greatest mathematicians, astronomers and geographers in history. His i... -
The Sieve of Eratosthenes (Primes up to 120)
The Sieve of Eratosthenes (Primes up to 120)The Sieve of Eratosthenes (Primes up to 120)
The Sieve of Eratosthenes is a simple, ancient algorithm for finding all prime numbers up to a specified integer. It was created by the ancient Greek mathema... -
Basic Math: Sieve of Eratosthenes
Basic Math: Sieve of EratosthenesBasic Math: Sieve of Eratosthenes
This lesson consists of showing you how to use the Sieve of Eratosthenes to find all prime numbers below a certain value. In this case, below 100. -
Algorithmen: Sieb des Eratosthenes [C++]
Algorithmen: Sieb des Eratosthenes [C++]Algorithmen: Sieb des Eratosthenes [C++]
【 Algorithmen 】 Sieb des Eratosthenes Hier zeige ich euch einen Algorithmus zur Bestimmung von Primzahlen. Wir verwenden hier das "Sieb des Eratosthenes". Na... -
Eratosthenes : Alexandria-Aswan
Eratosthenes : Alexandria-AswanEratosthenes : Alexandria-Aswan
-
Eratosthenes calculation for the size of the earth around 240 BC
Eratosthenes calculation for the size of the earth around 240 BCEratosthenes calculation for the size of the earth around 240 BC
http://www.intmensorg.com/ -
06D.4 Sieb des Eratosthenes programmieren
06D.4 Sieb des Eratosthenes programmieren06D.4 Sieb des Eratosthenes programmieren
Gesamtliste aller Videos, samt Suchfunktion: http://www.j3L7h.de/videos.html
Carl Sagan - Cosmos - Eratosthenes
- Order: Reorder
- Duration: 6:42
- Updated: 02 Sep 2014
- author: CarlSaganPortal
Carl Sagan - Cosmos - Eratosthenes.
http://wn.com/Carl_Sagan_-_Cosmos_-_Eratosthenes
Eratosthenes
- Order: Reorder
- Duration: 2:16
- Updated: 02 Sep 2014
- author: Jill Britton
Excerpt from the IBM film "Mathematics Peepshow".
http://wn.com/Eratosthenes
Excerpt from the IBM film "Mathematics Peepshow".
- published: 12 Jan 2011
- views: 29303
- author: Jill Britton
- published: 23 Jul 2013
- views: 23
Eratosthenes The Circumference of the Earth
- Order: Reorder
- Duration: 6:18
- Updated: 31 Mar 2013
A simple explanation of how Eratosthenes measured the curcumference of the Earth in 250BC. You will need this for GCS Astronomy.
For more information see AstronomyGCSE.co.uk
http://wn.com/Eratosthenes_The_Circumference_of_the_Earth
A simple explanation of how Eratosthenes measured the curcumference of the Earth in 250BC. You will need this for GCS Astronomy.
For more information see AstronomyGCSE.co.uk
- published: 31 Mar 2013
- views: 3857
Prime Numbers - Sieve of Eratosthenes
- Order: Reorder
- Duration: 5:31
- Updated: 05 Sep 2014
- author: Region 10 ESC
The Sieve of Eratosthenes is a simple, ancient algorithm for finding all prime numbers up to a specified integer. In this case we are using a 100's chart.
http://wn.com/Prime_Numbers_-_Sieve_of_Eratosthenes
The Sieve of Eratosthenes is a simple, ancient algorithm for finding all prime numbers up to a specified integer. In this case we are using a 100's chart.
- published: 25 Jan 2012
- views: 44582
- author: Region 10 ESC
Great Thinkers: Eratosthenes
- Order: Reorder
- Duration: 3:57
- Updated: 09 Dec 2013
Eratosthenes (c. 276 BC -- c.194 BC) was a Greek scholar nicknamed "Beta." This is because he was considered the second best in so many fields. Despite the dismissive nickname, Eratosthenes is still celebrated to this day for his significant contributions to math, astronomy, and geography. He is perhaps best known for measuring the circumference of the Earth, and for devising the "Sieve of Eratosthenes," a quick method for identifying prime numbers.
http://wn.com/Great_Thinkers_Eratosthenes
Eratosthenes (c. 276 BC -- c.194 BC) was a Greek scholar nicknamed "Beta." This is because he was considered the second best in so many fields. Despite the dismissive nickname, Eratosthenes is still celebrated to this day for his significant contributions to math, astronomy, and geography. He is perhaps best known for measuring the circumference of the Earth, and for devising the "Sieve of Eratosthenes," a quick method for identifying prime numbers.
- published: 09 Dec 2013
- views: 310
How did Eratosthenes calculate the circumference of the Earth?
- Order: Reorder
- Duration: 1:36
- Updated: 08 Dec 2014
How did Eratosthenes manage to determine the circumference of the Earth without going anywhere?
Connect with us at:
https://www.facebook.com/TheMathCentre
https://twitter.com/TheMathCentre
https://plus.google.com/112192327939609456055
This video was made in association with The Math Centre at Humber College, by Katherine Muir.
http://wn.com/How_did_Eratosthenes_calculate_the_circumference_of_the_Earth?
How did Eratosthenes manage to determine the circumference of the Earth without going anywhere?
Connect with us at:
https://www.facebook.com/TheMathCentre
https://twitter.com/TheMathCentre
https://plus.google.com/112192327939609456055
This video was made in association with The Math Centre at Humber College, by Katherine Muir.
- published: 08 Dec 2014
- views: 59
Sieb des Eratosthenes
- Order: Reorder
- Duration: 14:56
- Updated: 29 Apr 2013
- author: Christian Spannagel
TAFELAUFSCHRIEBE: http://wiki.zum.de/Benutzer:Cspannagel/Arithmetik In der Arithmetikvorlesung aus dem Wintersemester 2010/11 an der PH Heidelberg spricht Pr...
http://wn.com/Sieb_des_Eratosthenes
TAFELAUFSCHRIEBE: http://wiki.zum.de/Benutzer:Cspannagel/Arithmetik In der Arithmetikvorlesung aus dem Wintersemester 2010/11 an der PH Heidelberg spricht Pr...
- published: 15 Dec 2010
- views: 9508
- author: Christian Spannagel
The Amazing Eratosthenes
- Order: Reorder
- Duration: 19:38
- Updated: 05 Apr 2015
Eratosthenes measures the earth in 240 BC
History, science, math basic geometry for kids
http://wn.com/The_Amazing_Eratosthenes
Eratosthenes measures the earth in 240 BC
History, science, math basic geometry for kids
- published: 05 Apr 2015
- views: 29
Circumference & More Geometry
- Order: Reorder
- Duration: 4:43
- Updated: 19 Aug 2007
NASA Connect Segment explaining questions about Erastothenes, the Earth's circumference, parallel lines, angle relationships, and a transversal.
http://wn.com/Circumference_&_More_Geometry
NASA Connect Segment explaining questions about Erastothenes, the Earth's circumference, parallel lines, angle relationships, and a transversal.
- published: 19 Aug 2007
- views: 32181
Finding Prime numbers - Sieve of Eratosthenes
- Order: Reorder
- Duration: 9:54
- Updated: 03 Sep 2014
- author: mycodeschool
See complete series on maths problems here: http://www.youtube.com/playlist?list=PL2_aWCzGMAwLL-mEB4ef20f3iqWMGWa25 Sieve of Eratosthenes is a very famous an...
http://wn.com/Finding_Prime_numbers_-_Sieve_of_Eratosthenes
See complete series on maths problems here: http://www.youtube.com/playlist?list=PL2_aWCzGMAwLL-mEB4ef20f3iqWMGWa25 Sieve of Eratosthenes is a very famous an...
- published: 10 Jan 2013
- views: 5815
- author: mycodeschool
Prime Numbers - The Sieve of Eratosthenes
- Order: Reorder
- Duration: 2:56
- Updated: 05 Sep 2014
- author: Ron Barrow
Finding all the prime numbers between 1 and 100 using the technique devised by the ancient Greek mathematician Eratosthenes.
http://wn.com/Prime_Numbers_-_The_Sieve_of_Eratosthenes
Finding all the prime numbers between 1 and 100 using the technique devised by the ancient Greek mathematician Eratosthenes.
- published: 16 Apr 2008
- views: 86226
- author: Ron Barrow
Eratosthenes - Summer Solstice (Flat Earth Evidence)
- Order: Reorder
- Duration: 12:49
- Updated: 22 May 2015
http://wiki.tfes.org/Distance_to_the_Sun
http://wn.com/Eratosthenes_-_Summer_Solstice_(Flat_Earth_Evidence)
http://wiki.tfes.org/Distance_to_the_Sun
- published: 22 May 2015
- views: 54
Eratosthenes vs. The World
- Order: Reorder
- Duration: 3:57
- Updated: 12 Sep 2014
I so loved learning about rockets and getting into space that I continued to delve into physics in the form of a series of lectures by Professor Steven Pollack called Great Ideas of Classical Physics. Amazing stuff! He's good enough to avoid a lot of the mathematics and still give a loser like me a great sense of what it's all about. He recommended trying to figure out how one would figure out the circumference of the globe without today's modern technology. The dog and I tried, but we only got as far as the sun and something to do with shadows before we resorted to the Interweb where we learned all about Eratosthenes and his extraordinary skill and perceptiveness!
http://wn.com/Eratosthenes_vs._The_World
I so loved learning about rockets and getting into space that I continued to delve into physics in the form of a series of lectures by Professor Steven Pollack called Great Ideas of Classical Physics. Amazing stuff! He's good enough to avoid a lot of the mathematics and still give a loser like me a great sense of what it's all about. He recommended trying to figure out how one would figure out the circumference of the globe without today's modern technology. The dog and I tried, but we only got as far as the sun and something to do with shadows before we resorted to the Interweb where we learned all about Eratosthenes and his extraordinary skill and perceptiveness!
- published: 12 Sep 2014
- views: 1382
The Sieve of Eratosthenes
- Order: Reorder
- Duration: 4:52
- Updated: 09 Nov 2014
http://wn.com/The_Sieve_of_Eratosthenes
- published: 09 Nov 2014
- views: 35
Sieve of Eratosthenes
How to find the prime numbers from 1-100 using the Sieve of Eratosthenes.
http://wn.com/Sieve_of_Eratosthenes
How to find the prime numbers from 1-100 using the Sieve of Eratosthenes.
- published: 17 Sep 2013
- views: 225
- author: Deb Borba
Eratosthenes, the Brilliant Scientist of Antiquity
Eratosthenes (276 - 194 b.C.), director of the Great Library of Alexandria, one of the greatest mathematicians, astronomers and geographers in history. His i...
http://wn.com/Eratosthenes,_the_Brilliant_Scientist_of_Antiquity
Eratosthenes (276 - 194 b.C.), director of the Great Library of Alexandria, one of the greatest mathematicians, astronomers and geographers in history. His i...
- published: 12 Dec 2008
- views: 9881
- author: Yannis Y.
The Sieve of Eratosthenes (Primes up to 120)
The Sieve of Eratosthenes is a simple, ancient algorithm for finding all prime numbers up to a specified integer. It was created by the ancient Greek mathema...
http://wn.com/The_Sieve_of_Eratosthenes_(Primes_up_to_120)
The Sieve of Eratosthenes is a simple, ancient algorithm for finding all prime numbers up to a specified integer. It was created by the ancient Greek mathema...
- published: 29 Apr 2011
- views: 2213
- author: Anupam M
Basic Math: Sieve of Eratosthenes
- Order: Reorder
- Duration: 5:50
- Updated: 05 Aug 2014
- author: The Video Math Tutor
This lesson consists of showing you how to use the Sieve of Eratosthenes to find all prime numbers below a certain value. In this case, below 100.
http://wn.com/Basic_Math_Sieve_of_Eratosthenes
This lesson consists of showing you how to use the Sieve of Eratosthenes to find all prime numbers below a certain value. In this case, below 100.
- published: 16 Dec 2008
- views: 16108
- author: The Video Math Tutor
![Algorithmen: Sieb des Eratosthenes [C++]](http://web.archive.org./web/20150813080422im_/http://i.ytimg.com/vi/fUrtPGhLxQc/0.jpg "Algorithmen: Sieb des Eratosthenes [C++]")
Algorithmen: Sieb des Eratosthenes [C++]
- Order: Reorder
- Duration: 46:49
- Updated: 19 Jun 2014
- author: Tutor Exilius
【 Algorithmen 】 Sieb des Eratosthenes Hier zeige ich euch einen Algorithmus zur Bestimmung von Primzahlen. Wir verwenden hier das "Sieb des Eratosthenes". Na...
http://wn.com/Algorithmen_Sieb_des_Eratosthenes_C++_
【 Algorithmen 】 Sieb des Eratosthenes Hier zeige ich euch einen Algorithmus zur Bestimmung von Primzahlen. Wir verwenden hier das "Sieb des Eratosthenes". Na...
- published: 17 Dec 2013
- views: 302
- author: Tutor Exilius
Eratosthenes calculation for the size of the earth around 240 BC
- Order: Reorder
- Duration: 4:43
- Updated: 14 Nov 2014
http://www.intmensorg.com/
http://wn.com/Eratosthenes_calculation_for_the_size_of_the_earth_around_240_BC
http://www.intmensorg.com/
- published: 14 Nov 2014
- views: 15
06D.4 Sieb des Eratosthenes programmieren
- Order: Reorder
- Duration: 18:31
- Updated: 11 Nov 2014
Gesamtliste aller Videos, samt Suchfunktion:
http://www.j3L7h.de/videos.html
http://wn.com/06D.4_Sieb_des_Eratosthenes_programmieren
Gesamtliste aller Videos, samt Suchfunktion:
http://www.j3L7h.de/videos.html
- published: 11 Nov 2014
- views: 400
-
C# Coding Interview 09. Sieve-based Primality Test (Part 2)
C# Coding Interview 09. Sieve-based Primality Test (Part 2)C# Coding Interview 09. Sieve-based Primality Test (Part 2)
Blog: http://www.csharpexperiments.blogspot.in Google+: https://plus.google.com/u/0/+SandeepMS/posts. -
Cosmos - Eratosthenes calculates Earth's circumference
Cosmos - Eratosthenes calculates Earth's circumferenceCosmos - Eratosthenes calculates Earth's circumference
In the 3rd century BCE, Eratosthenes calculated the circumference of the Earth to high precision. Further Reading: http://en.wikipedia.org/wiki/Eratosthenes ... -
Interview with Eratosthenes Leg Chief Scientist Larry Mayer
Interview with Eratosthenes Leg Chief Scientist Larry MayerInterview with Eratosthenes Leg Chief Scientist Larry Mayer
In this interview conducted on August 15th, 2012, Chief Scientist Larry Mayer tells us what's in store for the Eraosthenes Leg of the 2012 season. -
Nautilus Interview with Geologist Iordanis Dimitriadis
Nautilus Interview with Geologist Iordanis DimitriadisNautilus Interview with Geologist Iordanis Dimitriadis
In this interview conducted on August 23rd, 2012, Iordanis Dimitriadis tells us what's special about the Eratosthenes seamount. -
Java walk through: Sieve of Eratosthenes
Java walk through: Sieve of EratosthenesJava walk through: Sieve of Eratosthenes
We walk through implementing (in Java + Eclipse) a sieve or Eratosthenes for finding prime numbers less than a given number N. See the accompanying post at h... -
Sagan on Eratosthenes' calculation of Earth's Circumference
Sagan on Eratosthenes' calculation of Earth's CircumferenceSagan on Eratosthenes' calculation of Earth's Circumference
From Carl Sagan's famous 1980s Cosmos series. -
Eratosthenes C - Nautilus Dive Highlights
Eratosthenes C - Nautilus Dive HighlightsEratosthenes C - Nautilus Dive Highlights
In this highlight video from August 22nd, 2012, the Nautilus team discovers Eratosthenes C, a 2300-2500 year old shipwreck on the Eratosthenes seamount. -
Teach Astronomy - Eratosthenes
Teach Astronomy - EratosthenesTeach Astronomy - Eratosthenes
http://www.teachastronomy.com/ Eratosthenes was a researcher and librarian at the Great Library in Alexandria, Egypt. Around 200 BC he used geometric reason... -
Nautilus Dive Highlights - Active Vent Site, Eratosthenes
Nautilus Dive Highlights - Active Vent Site, EratosthenesNautilus Dive Highlights - Active Vent Site, Eratosthenes
In this highlight video from August 24th, 2012, E/V Nautilus explores an active vent site on the Eratosthenes seamount off the Southern coast of Cyprus. -
Nautilus Dive Highlights - Shark on Eratosthenes
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-
Sieve of Eratosthenes, in AngularJS, with CSS3 explosions
Sieve of Eratosthenes, in AngularJS, with CSS3 explosionsSieve of Eratosthenes, in AngularJS, with CSS3 explosions
-
Nautilus Expedition Summary - Eratosthenes Leg 3
Nautilus Expedition Summary - Eratosthenes Leg 3Nautilus Expedition Summary - Eratosthenes Leg 3
See what you missed during the third leg of the 2012 expedition season. E/V Nautilus spent 14 days exploring the Eratosthenes seamount: the team mapped inter... -
The World is Round/Size of the Earth
The World is Round/Size of the EarthThe World is Round/Size of the Earth
Here are a couple of computer-animated segments I made. They were to be part of RabidApe's Big Bang project. Script, storyboard, and narration http://www.you... -
Capernicus Crater, Sinus Aestuum and Eratosthenes Impact Craters....avi
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Welcome Youtubers, welcome to a video showing Capernicus, Sinus Aestuum and aratosthenes Impact Craters... Capernicus Crater 93 Km in Diameter, 3.8 Km Deep S... -
Sieve of Eratosthenes in Cilk Plus (serial vs SIMD vs cilk_for)
Sieve of Eratosthenes in Cilk Plus (serial vs SIMD vs cilk_for)Sieve of Eratosthenes in Cilk Plus (serial vs SIMD vs cilk_for)
Demonstration of cilk_for and Cilk Plus array notation to initialize arrays and use SIMD operations. The algorithm implemented is the Sieve of Eratosthenes for finding prime numbers. The algorithm: http://en.wikipedia.org/wiki/Sieve_of_Eratosthenes Cilk Plus: http://www.cilkplus.org/ Sieve.zip: https://www.dropbox.com/s/pt7gfa6b83kck0k/cilkSieve.zip?dl=0 My Blog: http://harrisonmulder.blogspot.ca/ -
Sieve of Eratosthenes Answers
Sieve of Eratosthenes AnswersSieve of Eratosthenes Answers
-
Nuclear Winter and the End of the Arms Race: Carl Sagan Interview (1991)
Nuclear Winter and the End of the Arms Race: Carl Sagan Interview (1991)Nuclear Winter and the End of the Arms Race: Carl Sagan Interview (1991)
Nuclear winter (also known as atomic winter) is a hypothetical climatic effect of countervalue nuclear war. Models suggest that detonating dozens or more nuclear weapons on cities prone to firestorm, comparable to the Hiroshima of 1945, could have a profound and severe effect on the climate causing cold weather and reduced sunlight for a period of months or even years by the emission of large amounts of the firestorms smoke and soot into the Earth's stratosphere. Similar climatic effects can be caused by comets or an asteroid impact, also sometimes termed an impact winter, or by a supervolcano eruption, known as a volcanic winter. During th -
Meeting C++ 2014 - An interview with Hartmut Kaiser and Scott Meyers
Meeting C++ 2014 - An interview with Hartmut Kaiser and Scott MeyersMeeting C++ 2014 - An interview with Hartmut Kaiser and Scott Meyers
This interview with Hartmut Kaiser and Scott Meyers was shortly after Meeting C++ 2014 recorded. Talks will follow starting by next week, schedule of Meeting C++ 2014: http://meetingcpp.com/index.php/schedule14.html -
Galileo or Socrates or SB (ගැලිලියෝද? සොක්රටීස්ද? SB ද? )
Galileo or Socrates or SB (ගැලිලියෝද? සොක්රටීස්ද? SB ද? )Galileo or Socrates or SB (ගැලිලියෝද? සොක්රටීස්ද? SB ද? )
Who figured out the Earth is round? ලෝකය ගෝලාකාර බව සොයා ගත්තේ කවුද? ලෝකය පැතලියි කියන අය තාමත් ඉන්න බව ඔබ දන්නවද? Web - http://www.videokatha.com YouTube - http://www.youtube.com/videokatha Blog - http://www.videokatha.blogspot.com FaceBook - http://www.facebook.com/videokatha -------------------------------------------------- Who figured out the Earth is round? http://www.aps.org/publications/apsnews/200606/history.cfm http://en.wikipedia.org/wiki/Spherical_Earth http://starchild.gsfc.nasa.gov/docs/StarChild/questions/question54.html https://answers.yahoo.com/question/index?qid=20060820194513AAMYpHr Was Columbus the first person to say t
C# Coding Interview 09. Sieve-based Primality Test (Part 2)
- Order: Reorder
- Duration: 6:12
- Updated: 14 Apr 2014
- author: C# Experiments
Blog: http://www.csharpexperiments.blogspot.in Google+: https://plus.google.com/u/0/+SandeepMS/posts.
http://wn.com/C_Coding_Interview_09._Sieve-based_Primality_Test_(Part_2)
Blog: http://www.csharpexperiments.blogspot.in Google+: https://plus.google.com/u/0/+SandeepMS/posts.
- published: 06 Apr 2014
- views: 219
- author: C# Experiments
Cosmos - Eratosthenes calculates Earth's circumference
- Order: Reorder
- Duration: 6:34
- Updated: 04 Sep 2014
- author: Gravitationalist
In the 3rd century BCE, Eratosthenes calculated the circumference of the Earth to high precision. Further Reading: http://en.wikipedia.org/wiki/Eratosthenes ...
http://wn.com/Cosmos_-_Eratosthenes_calculates_Earth's_circumference
In the 3rd century BCE, Eratosthenes calculated the circumference of the Earth to high precision. Further Reading: http://en.wikipedia.org/wiki/Eratosthenes ...
- published: 13 Apr 2007
- views: 104635
- author: Gravitationalist
Interview with Eratosthenes Leg Chief Scientist Larry Mayer
- Order: Reorder
- Duration: 3:57
- Updated: 07 Dec 2013
- author: EVNautilus
In this interview conducted on August 15th, 2012, Chief Scientist Larry Mayer tells us what's in store for the Eraosthenes Leg of the 2012 season.
http://wn.com/Interview_with_Eratosthenes_Leg_Chief_Scientist_Larry_Mayer
In this interview conducted on August 15th, 2012, Chief Scientist Larry Mayer tells us what's in store for the Eraosthenes Leg of the 2012 season.
- published: 16 Aug 2012
- views: 254
- author: EVNautilus
Nautilus Interview with Geologist Iordanis Dimitriadis
- Order: Reorder
- Duration: 2:15
- Updated: 29 Sep 2013
- author: EVNautilus
In this interview conducted on August 23rd, 2012, Iordanis Dimitriadis tells us what's special about the Eratosthenes seamount.
http://wn.com/Nautilus_Interview_with_Geologist_Iordanis_Dimitriadis
In this interview conducted on August 23rd, 2012, Iordanis Dimitriadis tells us what's special about the Eratosthenes seamount.
- published: 23 Aug 2012
- views: 53
- author: EVNautilus
Java walk through: Sieve of Eratosthenes
- Order: Reorder
- Duration: 10:30
- Updated: 28 Jun 2014
- author: TechLiterate
We walk through implementing (in Java + Eclipse) a sieve or Eratosthenes for finding prime numbers less than a given number N. See the accompanying post at h...
http://wn.com/Java_walk_through_Sieve_of_Eratosthenes
We walk through implementing (in Java + Eclipse) a sieve or Eratosthenes for finding prime numbers less than a given number N. See the accompanying post at h...
- published: 01 May 2013
- views: 1616
- author: TechLiterate
Sagan on Eratosthenes' calculation of Earth's Circumference
From Carl Sagan's famous 1980s Cosmos series.
http://wn.com/Sagan_on_Eratosthenes'_calculation_of_Earth's_Circumference
Eratosthenes C - Nautilus Dive Highlights
- Order: Reorder
- Duration: 2:05
- Updated: 27 Aug 2014
- author: EVNautilus
In this highlight video from August 22nd, 2012, the Nautilus team discovers Eratosthenes C, a 2300-2500 year old shipwreck on the Eratosthenes seamount.
http://wn.com/Eratosthenes_C_-_Nautilus_Dive_Highlights
In this highlight video from August 22nd, 2012, the Nautilus team discovers Eratosthenes C, a 2300-2500 year old shipwreck on the Eratosthenes seamount.
- published: 23 Aug 2012
- views: 1080
- author: EVNautilus
Teach Astronomy - Eratosthenes
- Order: Reorder
- Duration: 0:59
- Updated: 08 Jun 2013
- author: Teach Astronomy
http://www.teachastronomy.com/ Eratosthenes was a researcher and librarian at the Great Library in Alexandria, Egypt. Around 200 BC he used geometric reason...
http://wn.com/Teach_Astronomy_-_Eratosthenes
http://www.teachastronomy.com/ Eratosthenes was a researcher and librarian at the Great Library in Alexandria, Egypt. Around 200 BC he used geometric reason...
- published: 06 Jul 2010
- views: 70
- author: Teach Astronomy
Nautilus Dive Highlights - Active Vent Site, Eratosthenes
- Order: Reorder
- Duration: 1:31
- Updated: 29 Sep 2013
- author: EVNautilus
In this highlight video from August 24th, 2012, E/V Nautilus explores an active vent site on the Eratosthenes seamount off the Southern coast of Cyprus.
http://wn.com/Nautilus_Dive_Highlights_-_Active_Vent_Site,_Eratosthenes
In this highlight video from August 24th, 2012, E/V Nautilus explores an active vent site on the Eratosthenes seamount off the Southern coast of Cyprus.
- published: 24 Aug 2012
- views: 145
- author: EVNautilus
Nautilus Dive Highlights - Shark on Eratosthenes
- Order: Reorder
- Duration: 1:02
- Updated: 04 Oct 2013
- author: EVNautilus
http://wn.com/Nautilus_Dive_Highlights_-_Shark_on_Eratosthenes
Sieve of Eratosthenes, in AngularJS, with CSS3 explosions
- Order: Reorder
- Duration: 0:21
- Updated: 04 Apr 2014
http://wn.com/Sieve_of_Eratosthenes,_in_AngularJS,_with_CSS3_explosions
- published: 04 Apr 2014
- views: 97
Nautilus Expedition Summary - Eratosthenes Leg 3
- Order: Reorder
- Duration: 3:05
- Updated: 29 Sep 2013
- author: EVNautilus
See what you missed during the third leg of the 2012 expedition season. E/V Nautilus spent 14 days exploring the Eratosthenes seamount: the team mapped inter...
http://wn.com/Nautilus_Expedition_Summary_-_Eratosthenes_Leg_3
See what you missed during the third leg of the 2012 expedition season. E/V Nautilus spent 14 days exploring the Eratosthenes seamount: the team mapped inter...
- published: 27 Aug 2012
- views: 180
- author: EVNautilus
The World is Round/Size of the Earth
Here are a couple of computer-animated segments I made. They were to be part of RabidApe's Big Bang project. Script, storyboard, and narration http://www.you...
http://wn.com/The_World_is_Round_Size_of_the_Earth
Here are a couple of computer-animated segments I made. They were to be part of RabidApe's Big Bang project. Script, storyboard, and narration http://www.you...
- published: 26 May 2007
- views: 52100
- author: BGenerous
Capernicus Crater, Sinus Aestuum and Eratosthenes Impact Craters....avi
- Order: Reorder
- Duration: 3:01
- Updated: 05 Oct 2013
- author: Pelon Cito
Welcome Youtubers, welcome to a video showing Capernicus, Sinus Aestuum and aratosthenes Impact Craters... Capernicus Crater 93 Km in Diameter, 3.8 Km Deep S...
http://wn.com/Capernicus_Crater,_Sinus_Aestuum_and_Eratosthenes_Impact_Craters....avi
Welcome Youtubers, welcome to a video showing Capernicus, Sinus Aestuum and aratosthenes Impact Craters... Capernicus Crater 93 Km in Diameter, 3.8 Km Deep S...
- published: 15 Nov 2011
- views: 142
- author: Pelon Cito
Sieve of Eratosthenes in Cilk Plus (serial vs SIMD vs cilk_for)
- Order: Reorder
- Duration: 11:08
- Updated: 14 Nov 2014
Demonstration of cilk_for and Cilk Plus array notation to initialize arrays and use SIMD operations. The algorithm implemented is the Sieve of Eratosthenes for finding prime numbers.
The algorithm:
http://en.wikipedia.org/wiki/Sieve_of_Eratosthenes
Cilk Plus:
http://www.cilkplus.org/
Sieve.zip:
https://www.dropbox.com/s/pt7gfa6b83kck0k/cilkSieve.zip?dl=0
My Blog:
http://harrisonmulder.blogspot.ca/
http://wn.com/Sieve_of_Eratosthenes_in_Cilk_Plus_(serial_vs_SIMD_vs_cilk_for)
Demonstration of cilk_for and Cilk Plus array notation to initialize arrays and use SIMD operations. The algorithm implemented is the Sieve of Eratosthenes for finding prime numbers.
The algorithm:
http://en.wikipedia.org/wiki/Sieve_of_Eratosthenes
Cilk Plus:
http://www.cilkplus.org/
Sieve.zip:
https://www.dropbox.com/s/pt7gfa6b83kck0k/cilkSieve.zip?dl=0
My Blog:
http://harrisonmulder.blogspot.ca/
- published: 14 Nov 2014
- views: 7
Sieve of Eratosthenes Answers
- Order: Reorder
- Duration: 2:33
- Updated: 30 Oct 2013
http://wn.com/Sieve_of_Eratosthenes_Answers
- published: 30 Oct 2013
- views: 57
Nuclear Winter and the End of the Arms Race: Carl Sagan Interview (1991)
- Order: Reorder
- Duration: 43:13
- Updated: 03 Sep 2013
Nuclear winter (also known as atomic winter) is a hypothetical climatic effect of countervalue nuclear war. Models suggest that detonating dozens or more nuclear weapons on cities prone to firestorm, comparable to the Hiroshima of 1945, could have a profound and severe effect on the climate causing cold weather and reduced sunlight for a period of months or even years by the emission of large amounts of the firestorms smoke and soot into the Earth's stratosphere.
Similar climatic effects can be caused by comets or an asteroid impact, also sometimes termed an impact winter, or by a supervolcano eruption, known as a volcanic winter.
During the early 1980s, Fidel Castro recommended to the Kremlin a harder line against Washington, even suggesting the possibility of nuclear strikes. The pressure stopped after Soviet officials gave Castro a briefing on the ecological impact on Cuba of nuclear strikes on the United States.[60]
In an interview in 2000, Mikhail Gorbachev, in response to the comment "In the 1980s, you warned about the unprecedented dangers of nuclear weapons and took very daring steps to reverse the arms race," said "Models made by Russian and American scientists showed that a nuclear war would result in a nuclear winter that would be extremely destructive to all life on Earth; the knowledge of that was a great stimulus to us, to people of honor and morality, to act in that situation."[61]
As the implications of nuclear winter began to be taken seriously in the late 1980s, military analysts turned their attention to the development of nuclear warheads that would explode at low altitudes and cause less thermal radiation ignited fires, thus reducing the likelihood of a nuclear winter. The TTAPS paper had described a 3000 MT counterforce attack on ICBM sites; Michael Altfeld of Michigan State University and political scientist Stephen Cimbala of Pennsylvania State University argued that smaller, more accurate warheads and lower detonation heights could produce the same counterforce strike with only 3 MT and produce less climatic effects, even if cities were targeted, as lower fuzing heights, such as surface bursts, would limit the range of the burning thermal rays due to terrain masking and shadowing, while also temporarily lofting far more radioactive soil into the atmosphere. Therefore as a consequence of attempting to limit the target fire hazard by reducing the range of thermal radiation with fuzing for surface bursts, this will result in a scenario were the far more concentrated, and therefore deadlier, local fallout that is generated following a surface burst forms, as opposed to the comparatively dilute global fallout created when nuclear weapons are fuzed in air burst mode.[62][63] Altfeld and Cimbala also suggested that belief in the possibility of nuclear winter has actually made nuclear war more likely, contrary to the views of Sagan and others, because it has inspired the development of more accurate, and lower explosive yield, nuclear weapons.
http://en.wikipedia.org/wiki/Nuclear_winter
http://wn.com/Nuclear_Winter_and_the_End_of_the_Arms_Race_Carl_Sagan_Interview_(1991)
Nuclear winter (also known as atomic winter) is a hypothetical climatic effect of countervalue nuclear war. Models suggest that detonating dozens or more nuclear weapons on cities prone to firestorm, comparable to the Hiroshima of 1945, could have a profound and severe effect on the climate causing cold weather and reduced sunlight for a period of months or even years by the emission of large amounts of the firestorms smoke and soot into the Earth's stratosphere.
Similar climatic effects can be caused by comets or an asteroid impact, also sometimes termed an impact winter, or by a supervolcano eruption, known as a volcanic winter.
During the early 1980s, Fidel Castro recommended to the Kremlin a harder line against Washington, even suggesting the possibility of nuclear strikes. The pressure stopped after Soviet officials gave Castro a briefing on the ecological impact on Cuba of nuclear strikes on the United States.[60]
In an interview in 2000, Mikhail Gorbachev, in response to the comment "In the 1980s, you warned about the unprecedented dangers of nuclear weapons and took very daring steps to reverse the arms race," said "Models made by Russian and American scientists showed that a nuclear war would result in a nuclear winter that would be extremely destructive to all life on Earth; the knowledge of that was a great stimulus to us, to people of honor and morality, to act in that situation."[61]
As the implications of nuclear winter began to be taken seriously in the late 1980s, military analysts turned their attention to the development of nuclear warheads that would explode at low altitudes and cause less thermal radiation ignited fires, thus reducing the likelihood of a nuclear winter. The TTAPS paper had described a 3000 MT counterforce attack on ICBM sites; Michael Altfeld of Michigan State University and political scientist Stephen Cimbala of Pennsylvania State University argued that smaller, more accurate warheads and lower detonation heights could produce the same counterforce strike with only 3 MT and produce less climatic effects, even if cities were targeted, as lower fuzing heights, such as surface bursts, would limit the range of the burning thermal rays due to terrain masking and shadowing, while also temporarily lofting far more radioactive soil into the atmosphere. Therefore as a consequence of attempting to limit the target fire hazard by reducing the range of thermal radiation with fuzing for surface bursts, this will result in a scenario were the far more concentrated, and therefore deadlier, local fallout that is generated following a surface burst forms, as opposed to the comparatively dilute global fallout created when nuclear weapons are fuzed in air burst mode.[62][63] Altfeld and Cimbala also suggested that belief in the possibility of nuclear winter has actually made nuclear war more likely, contrary to the views of Sagan and others, because it has inspired the development of more accurate, and lower explosive yield, nuclear weapons.
http://en.wikipedia.org/wiki/Nuclear_winter
- published: 03 Sep 2013
- views: 8508
Meeting C++ 2014 - An interview with Hartmut Kaiser and Scott Meyers
- Order: Reorder
- Duration: 19:08
- Updated: 09 Dec 2014
This interview with Hartmut Kaiser and Scott Meyers was shortly after Meeting C++ 2014 recorded.
Talks will follow starting by next week, schedule of Meeting C++ 2014:
http://meetingcpp.com/index.php/schedule14.html
http://wn.com/Meeting_C++_2014_-_An_interview_with_Hartmut_Kaiser_and_Scott_Meyers
This interview with Hartmut Kaiser and Scott Meyers was shortly after Meeting C++ 2014 recorded.
Talks will follow starting by next week, schedule of Meeting C++ 2014:
http://meetingcpp.com/index.php/schedule14.html
- published: 09 Dec 2014
- views: 1257
Galileo or Socrates or SB (ගැලිලියෝද? සොක්රටීස්ද? SB ද? )
- Order: Reorder
- Duration: 7:20
- Updated: 18 Dec 2014
Who figured out the Earth is round?
ලෝකය ගෝලාකාර බව සොයා ගත්තේ කවුද?
ලෝකය පැතලියි කියන අය තාමත් ඉන්න බව ඔබ දන්නවද?
Web - http://www.videokatha.com
YouTube - http://www.youtube.com/videokatha
Blog - http://www.videokatha.blogspot.com
FaceBook - http://www.facebook.com/videokatha
--------------------------------------------------
Who figured out the Earth is round?
http://www.aps.org/publications/apsnews/200606/history.cfm
http://en.wikipedia.org/wiki/Spherical_Earth
http://starchild.gsfc.nasa.gov/docs/StarChild/questions/question54.html
https://answers.yahoo.com/question/index?qid=20060820194513AAMYpHr
Was Columbus the first person to say the Earth is round?
http://www.pa.msu.edu/sciencet/ask_st/071592.html
The Flat Earth
http://www.lhup.edu/~DSimanek/flat/flateart.htm
http://www.vice.com/read/flat-earth-society-interview-876
http://www.theflatearthsociety.org/tiki/tiki-index.php?page=The+Lunar+Eclipse
The Greeks Knew The Earth Was Round Before Copernicus
http://indianapublicmedia.org/amomentofscience/greeks-knew-earth-copernicus/
http://www.astronomy.ohio-state.edu/~thompson/161/measearth.html
Eratosthenes
https://www.youtube.com/watch?v=VnHn03QQ8lU
Socrates, Plato, and Aristotle
http://webspace.ship.edu/cgboer/athenians.html
Modern flat Earth societies
http://en.wikipedia.org/wiki/Modern_flat_Earth_societies
NASA | Lunar Eclipse Essentials
https://www.youtube.com/watch?v=wuhNZejHeBg
http://wn.com/Galileo_or_Socrates_or_SB_(ගැලිලියෝද?_සොක්රටීස්ද?_SB_ද?_)
Who figured out the Earth is round?
ලෝකය ගෝලාකාර බව සොයා ගත්තේ කවුද?
ලෝකය පැතලියි කියන අය තාමත් ඉන්න බව ඔබ දන්නවද?
Web - http://www.videokatha.com
YouTube - http://www.youtube.com/videokatha
Blog - http://www.videokatha.blogspot.com
FaceBook - http://www.facebook.com/videokatha
--------------------------------------------------
Who figured out the Earth is round?
http://www.aps.org/publications/apsnews/200606/history.cfm
http://en.wikipedia.org/wiki/Spherical_Earth
http://starchild.gsfc.nasa.gov/docs/StarChild/questions/question54.html
https://answers.yahoo.com/question/index?qid=20060820194513AAMYpHr
Was Columbus the first person to say the Earth is round?
http://www.pa.msu.edu/sciencet/ask_st/071592.html
The Flat Earth
http://www.lhup.edu/~DSimanek/flat/flateart.htm
http://www.vice.com/read/flat-earth-society-interview-876
http://www.theflatearthsociety.org/tiki/tiki-index.php?page=The+Lunar+Eclipse
The Greeks Knew The Earth Was Round Before Copernicus
http://indianapublicmedia.org/amomentofscience/greeks-knew-earth-copernicus/
http://www.astronomy.ohio-state.edu/~thompson/161/measearth.html
Eratosthenes
https://www.youtube.com/watch?v=VnHn03QQ8lU
Socrates, Plato, and Aristotle
http://webspace.ship.edu/cgboer/athenians.html
Modern flat Earth societies
http://en.wikipedia.org/wiki/Modern_flat_Earth_societies
NASA | Lunar Eclipse Essentials
https://www.youtube.com/watch?v=wuhNZejHeBg
- published: 18 Dec 2014
- views: 27
- Playlist
- Chat
6:42
Carl Sagan - Cosmos - Eratosthenes
Carl Sagan - Cosmos - Eratosthenes....
published: 24 Apr 2009
author: CarlSaganPortal
Carl Sagan - Cosmos - Eratosthenes
Carl Sagan - Cosmos - Eratosthenes
Carl Sagan - Cosmos - Eratosthenes.- published: 24 Apr 2009
- views: 113667
- author: CarlSaganPortal
2:16
Eratosthenes
Excerpt from the IBM film "Mathematics Peepshow"....
published: 12 Jan 2011
author: Jill Britton
Eratosthenes
Eratosthenes
Excerpt from the IBM film "Mathematics Peepshow".- published: 12 Jan 2011
- views: 29303
- author: Jill Britton
6:18
Eratosthenes The Circumference of the Earth
A simple explanation of how Eratosthenes measured the curcumference of the Earth in 250BC....
published: 31 Mar 2013
Eratosthenes The Circumference of the Earth
Eratosthenes The Circumference of the Earth
A simple explanation of how Eratosthenes measured the curcumference of the Earth in 250BC. You will need this for GCS Astronomy. For more information see AstronomyGCSE.co.uk- published: 31 Mar 2013
- views: 3857
5:31
Prime Numbers - Sieve of Eratosthenes
The Sieve of Eratosthenes is a simple, ancient algorithm for finding all prime numbers up ...
published: 25 Jan 2012
author: Region 10 ESC
Prime Numbers - Sieve of Eratosthenes
Prime Numbers - Sieve of Eratosthenes
The Sieve of Eratosthenes is a simple, ancient algorithm for finding all prime numbers up to a specified integer. In this case we are using a 100's chart.- published: 25 Jan 2012
- views: 44582
- author: Region 10 ESC
3:57
Great Thinkers: Eratosthenes
Eratosthenes (c. 276 BC -- c.194 BC) was a Greek scholar nicknamed "Beta." This is becaus...
published: 09 Dec 2013
Great Thinkers: Eratosthenes
Great Thinkers: Eratosthenes
Eratosthenes (c. 276 BC -- c.194 BC) was a Greek scholar nicknamed "Beta." This is because he was considered the second best in so many fields. Despite the dismissive nickname, Eratosthenes is still celebrated to this day for his significant contributions to math, astronomy, and geography. He is perhaps best known for measuring the circumference of the Earth, and for devising the "Sieve of Eratosthenes," a quick method for identifying prime numbers.- published: 09 Dec 2013
- views: 310
1:36
How did Eratosthenes calculate the circumference of the Earth?
How did Eratosthenes manage to determine the circumference of the Earth without going anyw...
published: 08 Dec 2014
How did Eratosthenes calculate the circumference of the Earth?
How did Eratosthenes calculate the circumference of the Earth?
How did Eratosthenes manage to determine the circumference of the Earth without going anywhere? Connect with us at: https://www.facebook.com/TheMathCentre https://twitter.com/TheMathCentre https://plus.google.com/112192327939609456055 This video was made in association with The Math Centre at Humber College, by Katherine Muir.- published: 08 Dec 2014
- views: 59
14:56
Sieb des Eratosthenes
TAFELAUFSCHRIEBE: http://wiki.zum.de/Benutzer:Cspannagel/Arithmetik In der Arithmetikvorle...
published: 15 Dec 2010
author: Christian Spannagel
Sieb des Eratosthenes
Sieb des Eratosthenes
TAFELAUFSCHRIEBE: http://wiki.zum.de/Benutzer:Cspannagel/Arithmetik In der Arithmetikvorlesung aus dem Wintersemester 2010/11 an der PH Heidelberg spricht Pr...- published: 15 Dec 2010
- views: 9508
- author: Christian Spannagel
19:38
The Amazing Eratosthenes
Eratosthenes measures the earth in 240 BC
History, science, math basic geometry for kids...
published: 05 Apr 2015
The Amazing Eratosthenes
The Amazing Eratosthenes
Eratosthenes measures the earth in 240 BC History, science, math basic geometry for kids- published: 05 Apr 2015
- views: 29
4:43
Circumference & More Geometry
NASA Connect Segment explaining questions about Erastothenes, the Earth's circumference, p...
published: 19 Aug 2007
Circumference & More Geometry
Circumference & More Geometry
NASA Connect Segment explaining questions about Erastothenes, the Earth's circumference, parallel lines, angle relationships, and a transversal.- published: 19 Aug 2007
- views: 32181
9:54
Finding Prime numbers - Sieve of Eratosthenes
See complete series on maths problems here: http://www.youtube.com/playlist?list=PL2_aWCzG...
published: 10 Jan 2013
author: mycodeschool
Finding Prime numbers - Sieve of Eratosthenes
Finding Prime numbers - Sieve of Eratosthenes
See complete series on maths problems here: http://www.youtube.com/playlist?list=PL2_aWCzGMAwLL-mEB4ef20f3iqWMGWa25 Sieve of Eratosthenes is a very famous an...- published: 10 Jan 2013
- views: 5815
- author: mycodeschool
2:56
Prime Numbers - The Sieve of Eratosthenes
Finding all the prime numbers between 1 and 100 using the technique devised by the ancient...
published: 16 Apr 2008
author: Ron Barrow
Prime Numbers - The Sieve of Eratosthenes
Prime Numbers - The Sieve of Eratosthenes
Finding all the prime numbers between 1 and 100 using the technique devised by the ancient Greek mathematician Eratosthenes.- published: 16 Apr 2008
- views: 86226
- author: Ron Barrow
12:49
Eratosthenes - Summer Solstice (Flat Earth Evidence)
http://wiki.tfes.org/Distance_to_the_Sun...
published: 22 May 2015
Eratosthenes - Summer Solstice (Flat Earth Evidence)
Eratosthenes - Summer Solstice (Flat Earth Evidence)
http://wiki.tfes.org/Distance_to_the_Sun- published: 22 May 2015
- views: 54
3:57
Eratosthenes vs. The World
I so loved learning about rockets and getting into space that I continued to delve into ph...
published: 12 Sep 2014
Eratosthenes vs. The World
Eratosthenes vs. The World
I so loved learning about rockets and getting into space that I continued to delve into physics in the form of a series of lectures by Professor Steven Pollack called Great Ideas of Classical Physics. Amazing stuff! He's good enough to avoid a lot of the mathematics and still give a loser like me a great sense of what it's all about. He recommended trying to figure out how one would figure out the circumference of the globe without today's modern technology. The dog and I tried, but we only got as far as the sun and something to do with shadows before we resorted to the Interweb where we learned all about Eratosthenes and his extraordinary skill and perceptiveness!- published: 12 Sep 2014
- views: 1382
- Playlist
- Chat
6:12
C# Coding Interview 09. Sieve-based Primality Test (Part 2)
Blog: http://www.csharpexperiments.blogspot.in Google+: https://plus.google.com/u/0/+Sande...
published: 06 Apr 2014
author: C# Experiments
C# Coding Interview 09. Sieve-based Primality Test (Part 2)
C# Coding Interview 09. Sieve-based Primality Test (Part 2)
Blog: http://www.csharpexperiments.blogspot.in Google+: https://plus.google.com/u/0/+SandeepMS/posts.- published: 06 Apr 2014
- views: 219
- author: C# Experiments
6:34
Cosmos - Eratosthenes calculates Earth's circumference
In the 3rd century BCE, Eratosthenes calculated the circumference of the Earth to high pre...
published: 13 Apr 2007
author: Gravitationalist
Cosmos - Eratosthenes calculates Earth's circumference
Cosmos - Eratosthenes calculates Earth's circumference
In the 3rd century BCE, Eratosthenes calculated the circumference of the Earth to high precision. Further Reading: http://en.wikipedia.org/wiki/Eratosthenes ...- published: 13 Apr 2007
- views: 104635
- author: Gravitationalist
3:57
Interview with Eratosthenes Leg Chief Scientist Larry Mayer
In this interview conducted on August 15th, 2012, Chief Scientist Larry Mayer tells us wha...
published: 16 Aug 2012
author: EVNautilus
Interview with Eratosthenes Leg Chief Scientist Larry Mayer
Interview with Eratosthenes Leg Chief Scientist Larry Mayer
In this interview conducted on August 15th, 2012, Chief Scientist Larry Mayer tells us what's in store for the Eraosthenes Leg of the 2012 season.- published: 16 Aug 2012
- views: 254
- author: EVNautilus
2:15
Nautilus Interview with Geologist Iordanis Dimitriadis
In this interview conducted on August 23rd, 2012, Iordanis Dimitriadis tells us what's spe...
published: 23 Aug 2012
author: EVNautilus
Nautilus Interview with Geologist Iordanis Dimitriadis
Nautilus Interview with Geologist Iordanis Dimitriadis
In this interview conducted on August 23rd, 2012, Iordanis Dimitriadis tells us what's special about the Eratosthenes seamount.- published: 23 Aug 2012
- views: 53
- author: EVNautilus
10:30
Java walk through: Sieve of Eratosthenes
We walk through implementing (in Java + Eclipse) a sieve or Eratosthenes for finding prime...
published: 01 May 2013
author: TechLiterate
Java walk through: Sieve of Eratosthenes
Java walk through: Sieve of Eratosthenes
We walk through implementing (in Java + Eclipse) a sieve or Eratosthenes for finding prime numbers less than a given number N. See the accompanying post at h...- published: 01 May 2013
- views: 1616
- author: TechLiterate
2:33
Sagan on Eratosthenes' calculation of Earth's Circumference
From Carl Sagan's famous 1980s Cosmos series....
published: 30 Oct 2013
author: Ray Young
Sagan on Eratosthenes' calculation of Earth's Circumference
Sagan on Eratosthenes' calculation of Earth's Circumference
From Carl Sagan's famous 1980s Cosmos series.- published: 30 Oct 2013
- views: 191
- author: Ray Young
2:05
Eratosthenes C - Nautilus Dive Highlights
In this highlight video from August 22nd, 2012, the Nautilus team discovers Eratosthenes C...
published: 23 Aug 2012
author: EVNautilus
Eratosthenes C - Nautilus Dive Highlights
Eratosthenes C - Nautilus Dive Highlights
In this highlight video from August 22nd, 2012, the Nautilus team discovers Eratosthenes C, a 2300-2500 year old shipwreck on the Eratosthenes seamount.- published: 23 Aug 2012
- views: 1080
- author: EVNautilus
0:59
Teach Astronomy - Eratosthenes
http://www.teachastronomy.com/ Eratosthenes was a researcher and librarian at the Great Li...
published: 06 Jul 2010
author: Teach Astronomy
Teach Astronomy - Eratosthenes
Teach Astronomy - Eratosthenes
http://www.teachastronomy.com/ Eratosthenes was a researcher and librarian at the Great Library in Alexandria, Egypt. Around 200 BC he used geometric reason...- published: 06 Jul 2010
- views: 70
- author: Teach Astronomy
1:31
Nautilus Dive Highlights - Active Vent Site, Eratosthenes
In this highlight video from August 24th, 2012, E/V Nautilus explores an active vent site ...
published: 24 Aug 2012
author: EVNautilus
Nautilus Dive Highlights - Active Vent Site, Eratosthenes
Nautilus Dive Highlights - Active Vent Site, Eratosthenes
In this highlight video from August 24th, 2012, E/V Nautilus explores an active vent site on the Eratosthenes seamount off the Southern coast of Cyprus.- published: 24 Aug 2012
- views: 145
- author: EVNautilus
1:02
Nautilus Dive Highlights - Shark on Eratosthenes
...
published: 23 Aug 2012
author: EVNautilus
Nautilus Dive Highlights - Shark on Eratosthenes
Nautilus Dive Highlights - Shark on Eratosthenes
- published: 23 Aug 2012
- views: 489
- author: EVNautilus
3:05
Nautilus Expedition Summary - Eratosthenes Leg 3
See what you missed during the third leg of the 2012 expedition season. E/V Nautilus spent...
published: 27 Aug 2012
author: EVNautilus
Nautilus Expedition Summary - Eratosthenes Leg 3
Nautilus Expedition Summary - Eratosthenes Leg 3
See what you missed during the third leg of the 2012 expedition season. E/V Nautilus spent 14 days exploring the Eratosthenes seamount: the team mapped inter...- published: 27 Aug 2012
- views: 180
- author: EVNautilus
2:01
The World is Round/Size of the Earth
Here are a couple of computer-animated segments I made. They were to be part of RabidApe's...
published: 26 May 2007
author: BGenerous
The World is Round/Size of the Earth
The World is Round/Size of the Earth
Here are a couple of computer-animated segments I made. They were to be part of RabidApe's Big Bang project. Script, storyboard, and narration http://www.you...- published: 26 May 2007
- views: 52100
- author: BGenerous
3:01
Capernicus Crater, Sinus Aestuum and Eratosthenes Impact Craters....avi
Welcome Youtubers, welcome to a video showing Capernicus, Sinus Aestuum and aratosthenes I...
published: 15 Nov 2011
author: Pelon Cito
Capernicus Crater, Sinus Aestuum and Eratosthenes Impact Craters....avi
Capernicus Crater, Sinus Aestuum and Eratosthenes Impact Craters....avi
Welcome Youtubers, welcome to a video showing Capernicus, Sinus Aestuum and aratosthenes Impact Craters... Capernicus Crater 93 Km in Diameter, 3.8 Km Deep S...- published: 15 Nov 2011
- views: 142
- author: Pelon Cito
photo: AP / Julie Jacobson
12 Aug 2015
The 16-year-old girl discovered the gold on Friday while swimming in Koenigssee where she was on holiday, a police spokesman said ... ....
photo: WN / Arturo Ubaub
13 Aug 2015
A self-described shaman who discovered the healing powers of herbs while seeing visions on his sickbed; a former consultant for IBM who ditched PowerPoint presentations to drive across Africa and an artist from Luxembourg who is a qualified plumber. They are among a group of 22 people newly settled in the crumbling village of Odrintsi in southeastern Bulgaria where they live without electricity, but with 230 goats.... ....
photo: Creative Commons / Neogeolegend
12 Aug 2015
SEOUL. North Korea's vice premier was executed by firing squad this year after showing discontent with the policies of the country's leader Kim Jong Un, a South Korean media report said on Wednesday. READ ALSO. N Korea's Kim has executed 70 officials since 2011 ... READ ALSO. Kim Jong-un reinstates 'pleasure troupe' harem of young women ... It provided no further details ... READ ALSO ... ....
photo: US Navy / Mass Communication Specialist 2nd Class Timothy A. Hazel
12 Aug 2015
12 August 2015. From the section US & Canada. Former US President Jimmy Carter says recent liver surgery revealed that he has cancer and it has spread to other parts of his body. The 90-year-old statesman underwent surgery to remove a small mass in his liver earlier this month. He said he would reveal more "when facts are known, possibly next week" ... Share this story About sharing. Email Facebook Twitter WhatsApp Linkedin ... Features....
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Public Technologies
07 Aug 2015
The di Suvero sculpture, "The Sieve of Eratosthenes," was, according to a Stanford press release from March 2000, donated to Stanford by Daniel Shapiro and Agnes Gund, who wished to honor Merryman "by thanking him for all he has done for us and everyone interested in art by giving a gift in his honor to Stanford of a work of an artist that John thought was sorely missing on campus....
Edit
Sydney Morning Herald
17 Jun 2015
Overnight Sunday into Monday morning, we reach winter solstice for the southern hemisphere ... Eratosthenes was born in 276BC in Cyrene, a city founded by the Greeks in North Africa, now part of Libya ... Advertisement ....
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The Examiner
13 Jun 2015
The discovery that the Earth is round (sphere) is considered one of man's greatest scientific achievements often wrongly attributed to Christopher Columbus. Columbus was, indeed, a explorer and courageous thinker who believe the earth was round. But he was not the first to make it to America. The Vikings in about AD 1000 were the first ... The Hebrew word "khug" basically means circle ... Eratosthenes calculated the circumference of the earth....
Edit
Detroit news
21 May 2015
Phil Berg, Car Culture 12.12 a.m. EDT May 21, 2015. (Photo. Basic Books). Last fall I was whining about in-car infotainment systems working poorly — Consumer Reports’ survey of 1.1 million car buyers’ No. 1 complaint — and I blamed the culture of engineering ... She was not far from U.S ... 20, and catch U.S ... Greek mathematician Eratosthenes figured out the circumference of the Earth using carefully placed sticks before 200 BCE ... I look at the U.S ... ....
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Australian Broadcasting Corporation
13 May 2015
Ancient Greek astronomer Eratosthenes calculated the circumference of the Earth at a time when most cultures thought the Earth was flat. See how at two places, Alexandria and Syene, he used his knowledge of geometry and shadows cast. Watch a modern-day mathematician recreate the Eratosthenes method and show how to calculate the Earth's circumference by using a pizza, of all things! ....
Edit
Forbes
06 Apr 2015
It’s a variant of the same argument I railed against last week– that science is an unnatural and recent development– and I don’t like it any better from a Nobel-winning physicist ... For instance, we know about the measurement of the Earth’s circumference by Eratosthenes around 240BC not from his own writings, which are lost, but from the commentary of Cleomedes, writing several centuries later ... we have a ....
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The Guardian
03 Apr 2015
The Nobel laureate on making science accessible – from Ptolemy to Darwin to Dawkins. Universal vision … the Andromeda Galaxy, 2.5m light years from Earth. Photograph. Getty Images/Science Faction. Steven Weinberg ... For instance, we know about the measurement of the Earth’s circumference by Eratosthenes around 240BC not from his own writings, which are lost, but from the commentary of Cleomedes, writing several centuries later ... Photograph ... ....
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South China Morning Post
28 Mar 2015
So Eratosthenes of Cyrene in 240BC became the first person in recorded history to notice that the sun casts no shadow at noon at the summer solstice at Syene, on the Tropic of Cancer at what is now Aswan, while in Alexandria on the Nile delta at noon on the same day, it cast a small shadow....
Edit
The Guardian
14 Mar 2015
Dawning of a new age … Eratosthenes of Cyrene set out to measure the sun’s rays ... So Eratosthenes of Cyrene in 240BC became the first person in recorded history to notice that the sun casts no shadow at noon at the summer solstice at Syene, on the tropic of cancer at what is now Aswan, while in Alexandria on the Nile delta at noon on the same day, it cast a small shadow....
Edit
The Guardian
22 Feb 2015
Among them, Eratosthenes estimated the circumference of the Earth using two poles and the distance between Alexandria and Syene – a measurement, Weinberg intriguingly points out, that was was made “probably by walkers, trained to make each step the same length”....
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National Public Radio
07 Sep 2014
Back in 240 B.C., in ancient Alexandria, an astronomer named Eratosthenes got a letter from southern Egypt ... Hmm, thought Eratosthenes, that doesn't happen where I live ... He imagined an Earth bigger than the one we live on, but since we don't know how Eratosthenes measured distances exactly, his calculations were either 16 percent too big or just 2 percent too big ... (Come to think of it, that's what Eratosthenes did....
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The Guardian
20 Aug 2014
A month ago, we looked at what great moments in science might have looked like if they happened via Twitter. Many who read it wanted to see more. So here are some more. Imagine if all scientists in history could access Twitter. Sounds awful, doesn’t it. Photograph. Dominic Lipinski/PA ... Eratosthenes. Eratosthenes on Twitter ... ....
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Lexington Herald-Leader
30 Jun 2014
The controversy about global warming and climate change is just the most recent example of people letting political, economic or religious ideology trump scientific facts ... The ancient mathematician Eratosthenes estimated the radius of the spherical Earth to a remarkable degree of accuracy, yet even today there are still people who claim the Earth is flat ... It took the experiments of Louis Pasteur to refute this idea in the 19th century....
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