- published: 15 Dec 2013
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The Richter magnitude scale (also Richter scale) assigns a magnitude number to quantify the energy released by an earthquake. The Richter scale, developed in the 1930s, is a base-10 logarithmic scale, which defines magnitude as the logarithm of the ratio of the amplitude of the seismic waves to an arbitrary, minor amplitude.
As measured with a seismometer, an earthquake that registers 5.0 on the Richter scale has a shaking amplitude 10 times that of an earthquake that registered 4.0, and thus corresponds to a release of energy 31.6 times that released by the lesser earthquake. The Richter scale was succeeded in the 1970s by the moment magnitude scale. This is now the scale used by the United States Geological Survey to estimate magnitudes for all modern large earthquakes.
In 1935, the seismologists Charles Francis Richter and Beno Gutenberg, of the California Institute of Technology, developed the (future) Richter magnitude scale, specifically for measuring earthquakes in a given area of study in California, as recorded and measured with the Wood-Anderson torsion seismograph. Originally, Richter reported mathematical values to the nearest quarter of a unit, but the values later were reported with one decimal place; the local magnitude scale compared the magnitudes of different earthquakes. Richter derived his earthquake-magnitude scale from the apparent magnitude scale used to measure the brightness of stars.
Magnitude may refer to:
In mathematics:
In astronomy:
Khan Academy is a non-profit educational organization created in 2006 by educator Salman Khan with the aim of providing a free, world-class education for anyone, anywhere. The organization produces short lectures in the form of YouTube videos. In addition to micro lectures, the organization's website features practice exercises and tools for educators. All resources are available for free to anyone around the world. The main language of the website is English, but the content is also available in other languages.
The founder of the organization, Salman Khan, was born in New Orleans, Louisiana, United States to immigrant parents from Bangladesh and India. After earning three degrees from the Massachusetts Institute of Technology (a BS in mathematics, a BS in electrical engineering and computer science, and an MEng in electrical engineering and computer science), he pursued an MBA from Harvard Business School.
In late 2004, Khan began tutoring his cousin Nadia who needed help with math using Yahoo!'s Doodle notepad.When other relatives and friends sought similar help, he decided that it would be more practical to distribute the tutorials on YouTube. The videos' popularity and the testimonials of appreciative students prompted Khan to quit his job in finance as a hedge fund analyst at Connective Capital Management in 2009, and focus on the tutorials (then released under the moniker "Khan Academy") full-time.
Richter may refer to:
Scale or scales may refer to:
How to Determine Richter Magnitude
How Does The Richter Scale Work?
Moment Magnitude Explained—What Happened to the Richter Scale?
Earthquake: What Does 'Magnitude' Mean? | Video
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Difference between Richter Scale and Mercalli Scale - Richter Scale VS Mercalli Scale
How to determine the richter magnitude of an earthquake from it's seismogram.
Nepal has been hit by two huge earthquakes, a 7.8 and a 7.3 on the Richter Scale. What are the different ways seismologists measure earthquakes and what do these ratings mean? Read More: Earthquake Facts and Statistics http://earthquake.usgs.gov/earthquakes/eqarchives/year/eqstats.php How Earthquakes Work http://science.howstuffworks.com/nature/natural-disasters/earthquake6.htm The Modified Mercalli Intensity Scale http://earthquake.usgs.gov/learn/topics/mercalli.php "The effect of an earthquake on the Earth's surface is called the intensity. The intensity scale consists of a series of certain key responses such as people awakening, movement of furniture, damage to chimneys, and finally - total destruction." Magnitude VS Intensity http://pnsn.org/outreach/about-earthquak...
www.iris.edu/educate Scientists have developed far-more sensitive seismometers that, with faster computers, have enabled them to record & interpret a broader spectrum of seismic signals than was possible in the 1930's, when the Richter magnitude was developed. The moment magnitude uses seismograms plus what physically occurs during an earthquake (which can also be derived from seismograms), known as the "seismic moment". The seismic moment defines how much force is needed to generate the recorded waves. That information is plugged into the moment magnitude scale to give us the amount of energy that is released during an earthquake. For an interactive magnitude calculator, please visit: http://www.iris.edu/edu/10.5/EQSimulator.html Directed by Robert Butler, University of Portland OR An...
We've all heard earthquakes described in terms of their magnitude number. But what does this scale really mean? This video illustrates the variation of energy released in easy-to-understand terms.
The basics of the logarithmic Richter and Moment Magnitude Scales to measure earthquakes Watch the next lesson: https://www.khanacademy.org/math/algebra2/logarithms-tutorial/natural_logarithm/v/natural-logarithm-with-a-calculator?utm_source=YT&utm;_medium=Desc&utm;_campaign=AlgebraII Missed the previous lesson? https://www.khanacademy.org/math/algebra2/logarithms-tutorial/logarithm_properties/v/logarithmic-scale?utm_source=YT&utm;_medium=Desc&utm;_campaign=AlgebraII Algebra II on Khan Academy: Your studies in algebra 1 have built a solid foundation from which you can explore linear equations, inequalities, and functions. In algebra 2 we build upon that foundation and not only extend our knowledge of algebra 1, but slowly become capable of tackling the BIG questions of the universe. We'll a...
NASA Sci Files segment explaining how scientists measure the power of earthquakes by using the Richter Scale and the Moment Magnitude Scale.
This video examines a simplified Richter Scale formula to compute an earthquake's magnitude given the seismograph reading. It also shows how to compute the seismograph reading given the magnitude of an earthquake.
Seismologists say there's a 37 percent chance a magnitude 8.0 or 9.0 earthquake could hit Oregon in the next 50 years. It's hard to imagine the power of these earthquakes. So, let's break it down with sand. Video production: John Rosman, Ryan Haas Camera operators: Alan Slyvestre, Jason Bernert, John Rosman Audio and technical assistance: Randy Layton
Richter and mercalli scales mercalli scale vs richter scale difference and comparison . Diffen diffen difference mercalli_scale_vs_richter_scale a class "_zkb" href " url?q webcache.Googleusercontent search. Mercalli scale vs. Richter scale. While the mercalli scale describes the intensity of an earthquake based on its observed effects, the richter scale describes the earthquake's magnitude by measuring the seismic waves that cause the earthquake. The two scales have different applications and measurement techniques the richter and mercalli scales are both measures of earthquake severity, but the richter scale is much more commonly used. The scientific nature of the richter scale is based on the maximum amplitude of a wave recorded from an earthquake combined with the distance of the instr...
How to determine the richter magnitude of an earthquake from it's seismogram.
Nepal has been hit by two huge earthquakes, a 7.8 and a 7.3 on the Richter Scale. What are the different ways seismologists measure earthquakes and what do these ratings mean? Read More: Earthquake Facts and Statistics http://earthquake.usgs.gov/earthquakes/eqarchives/year/eqstats.php How Earthquakes Work http://science.howstuffworks.com/nature/natural-disasters/earthquake6.htm The Modified Mercalli Intensity Scale http://earthquake.usgs.gov/learn/topics/mercalli.php "The effect of an earthquake on the Earth's surface is called the intensity. The intensity scale consists of a series of certain key responses such as people awakening, movement of furniture, damage to chimneys, and finally - total destruction." Magnitude VS Intensity http://pnsn.org/outreach/about-earthquak...
www.iris.edu/educate Scientists have developed far-more sensitive seismometers that, with faster computers, have enabled them to record & interpret a broader spectrum of seismic signals than was possible in the 1930's, when the Richter magnitude was developed. The moment magnitude uses seismograms plus what physically occurs during an earthquake (which can also be derived from seismograms), known as the "seismic moment". The seismic moment defines how much force is needed to generate the recorded waves. That information is plugged into the moment magnitude scale to give us the amount of energy that is released during an earthquake. For an interactive magnitude calculator, please visit: http://www.iris.edu/edu/10.5/EQSimulator.html Directed by Robert Butler, University of Portland OR An...
We've all heard earthquakes described in terms of their magnitude number. But what does this scale really mean? This video illustrates the variation of energy released in easy-to-understand terms.
The basics of the logarithmic Richter and Moment Magnitude Scales to measure earthquakes Watch the next lesson: https://www.khanacademy.org/math/algebra2/logarithms-tutorial/natural_logarithm/v/natural-logarithm-with-a-calculator?utm_source=YT&utm;_medium=Desc&utm;_campaign=AlgebraII Missed the previous lesson? https://www.khanacademy.org/math/algebra2/logarithms-tutorial/logarithm_properties/v/logarithmic-scale?utm_source=YT&utm;_medium=Desc&utm;_campaign=AlgebraII Algebra II on Khan Academy: Your studies in algebra 1 have built a solid foundation from which you can explore linear equations, inequalities, and functions. In algebra 2 we build upon that foundation and not only extend our knowledge of algebra 1, but slowly become capable of tackling the BIG questions of the universe. We'll a...
NASA Sci Files segment explaining how scientists measure the power of earthquakes by using the Richter Scale and the Moment Magnitude Scale.
This video examines a simplified Richter Scale formula to compute an earthquake's magnitude given the seismograph reading. It also shows how to compute the seismograph reading given the magnitude of an earthquake.
Seismologists say there's a 37 percent chance a magnitude 8.0 or 9.0 earthquake could hit Oregon in the next 50 years. It's hard to imagine the power of these earthquakes. So, let's break it down with sand. Video production: John Rosman, Ryan Haas Camera operators: Alan Slyvestre, Jason Bernert, John Rosman Audio and technical assistance: Randy Layton
Richter and mercalli scales mercalli scale vs richter scale difference and comparison . Diffen diffen difference mercalli_scale_vs_richter_scale a class "_zkb" href " url?q webcache.Googleusercontent search. Mercalli scale vs. Richter scale. While the mercalli scale describes the intensity of an earthquake based on its observed effects, the richter scale describes the earthquake's magnitude by measuring the seismic waves that cause the earthquake. The two scales have different applications and measurement techniques the richter and mercalli scales are both measures of earthquake severity, but the richter scale is much more commonly used. The scientific nature of the richter scale is based on the maximum amplitude of a wave recorded from an earthquake combined with the distance of the instr...
Strong earthquake in Delhi, NCR and whole of northern India felt this afternoon. The epicenter is reported to be Afghanistan's Hindu Kush region at a Richter scale of 7.5. Zee News is the highly popular Hindi News channel of India’s largest television network ZMCL. The channel, which has a huge following in India and abroad, has won several prestigious national and international awards. Amongst its popular programs are - Dr. Subhash Chandra Show: https://goo.gl/fCugXC Daily News and Analysis: https://goo.gl/B8eVsD Manthan: https://goo.gl/6q0wUN Fast n Facts: https://goo.gl/kW2MYV Your daily does of entertainment: https://goo.gl/ZNEfhw Sports round up: https://goo.gl/KeeYjf Aapke Sitare: https://goo.gl/X56YSa Bharat Bhagya Vidhata: https://goo.gl/QqJiOV Taal Thok Ke : https://goo.gl/yiV6...
This lecture is part 1 of a two-part series on seismic hazard analysis. This lecture reviews more concepts of PSHA including magnitude recurrence laws, variability of ground motion prediction, and temporal uncertainty. Seismic hazard curves are introduced and demonstrated.
An earthquake (also known as a quake, tremor or temblor) is the perceptible shaking of the surface of the Earth, resulting from the sudden release of energy in the Earth's crust that creates seismic waves. Earthquakes can be violent enough to toss people around and destroy whole cities. The seismicity, seismism or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time. Earthquakes are measured using observations from seismometers. The moment magnitude is the most common scale on which earthquakes larger than approximately 5 are reported for the entire globe. The more numerous earthquakes smaller than magnitude 5 reported by national seismological observatories are measured mostly on the local magnitude scale, also referred to as...
K-141 Kursk (full Russian name Атомная Подводная Лодка «Курск» (АПЛ «Курск»), Atomnaya Podvodnaya Lodka "Kursk" (APL "Kursk"), meaning "Nuclear-powered submarine Kursk") was an Oscar-II class nuclear-powered cruise-missile submarine of the Russian Navy which was lost with all hands when it sank in the Barents Sea on 12 August 2000. It was a Project 949A Антей (Antey, Antaeus; NATO reporting name "Oscar II") submarine. It was named after the Russian city of Kursk, around which the Battle of Kursk took place in 1943. One of the first vessels completed after the end of the Soviet Union, it was commissioned into the Russian Navy's Northern Fleet. Notwithstanding the navy's oft-stated position that a collision with a foreign vessel had triggered the event, a report issued by the government att...
The BSFW Podcast Ep.5: "A Richter Scale?" Hosted by Vik Sabe with Dan Withnell and Greg McDougall! This week we welcome our old buddy and local POWERLIFTER Greg The Ghost to our table. We try to keep it together to talk about the science of lifting but end up with the same old random shit that always happens! Still Fun Though! Once we get the hang of it we might actually seem like a pro bunch... (BTW: Here's Dan's painfully great tattoo, art by Wes Hogan at Artistic Element... https://www.instagram.com/p/5_mwhjAPEN/?taken-by=hansumdan ) This week we discuss: Powerlifting + Evolve Strength http://www.evolvestrength.ca/ and @evolve_strength Onnit Labs and Alpha Brain MCT oil Whole Foods and those damn hippies Artistic Element Aziz Ansari Reddit Tesla's can float Generation Cycles Y...
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Check one
[Erick Sermon]
Uh-huh
Yeah, aww yeah, uhh ";Richter Scale";
It goes lights, camera, action I'm on
One more time to kill em, my rap flow is fulfilling
I scream with the Beastie Boys -- What time is it?
It's two o'clock, you gettin knocked out the box
then kicked off the block, Def Squad Hit Squad
no we won't stop, fuck it call the cops (uh-huh)
I be the invincible, in the school of hard knocks
I'm the principle, Fatman Joe y'know
[Parrish Smith]
As you suffer the repercussions, comin through the blaze
bust the crime scene, cause some drama, niggaz duckin
When we come through, throwin the jab, in the one-two
Layin MC's out to trap, when we run through (like what?)
Like the marathon, flooded with the diamonds on
Get my rhymin on, PMD fuckin shinin on
Back to Biz, new address with the fat crib
My shit in the Wiz, poli'-in with the big wigs
Chorus: Erick Sermon
Off the meter, and everytime we reach the
tip-top and ya don't stop, uhh!
In the field of rap, we pull rank no question
We top the ";Richter Scale";
*repeat 2X*
[Erick Sermon]
Bust the techniques, E.D. fantastic
Unreal GangStarr shit, Mass Appeal
Rap's top dawg, I'm the one you call on
to get Sic'-Wid-It, E don't forget it
I'm six, two and a half, heavyset, chocolate brown
Hell of a jab, gift to gab
I'm the elite, keep it underground like street level
I rock a Rolex watch, with a diamond bezel
[Parrish Smith]
Rap terror terror, EPMD, a new era
Off the richter scale, blowin hotter than ever
with the Squadron, beg your pardon, got the heads noddin
Lost your mind and said, ";Shit!!"; when we barged in
the front door door, rugged, keeps our shit raw raw
Make hits for the fans, plus the world tour
Believe that, peep that E and P's back
Wreckin heads daily, so chill and Get the Bozack
Chorus
[Erick Sermon]
Yo Royal Flush-in, all my cats be bustin
Servin you Customers and those fake hustlers
Whassup? Step to me, I smack you silly
I'm the Kid, but no comparison to Billy
I ain't scared of you motherfuckers -- can't you tell?
Girls lose to me when they groove to Maxwell, uhh
I got one life to live so I'm livin
Got girls to be hittin more cars to be drivin
[Parrish Smith]
We stripped too many beats to make too many niggaz to break
No moves are fake, no warnin shots fired blastin on crews like corrupt Jakes
The Black Viper, scream on MC's and rhyme cyphers
More Dangerous Mind than, Michelle Pfeiffer
So skedaddle-daddle, you get rattled don't wanna battle-battle
Put one to your rhyme saddle, stompin through, like wild cattle
We flow beef so dead that, let that shit cease
I'm quick with the hands, plus accurate with the two-piece
Chorus