- published: 22 Feb 2014
- views: 230918
Buffer may refer to:
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.
An academy (Attic Greek: Ἀκαδήμεια; Koine Greek Ἀκαδημία) is an institution of secondary education or higher learning, research, or honorary membership. The name traces back to Plato's school of philosophy, founded approximately 385 BC at Akademia, a sanctuary of Athena, the goddess of wisdom and skill, north of Athens, Greece.
Before Akademia was a school, and even before Cimon enclosed its precincts with a wall, it contained a sacred grove of olive trees dedicated to Athena, the goddess of wisdom, outside the city walls of ancient Athens. The archaic name for the site was Hekademia, which by classical times evolved into Akademia and was explained, at least as early as the beginning of the 6th century BC, by linking it to an Athenian hero, a legendary "Akademos". The site of Akademia was sacred to Athena and other immortals.
Plato's immediate successors as "scholarch" of Akademia were Speusippus (347–339 BC), Xenocrates (339–314 BC), Polemon (314–269 BC), Crates (ca. 269–266 BC), and Arcesilaus (ca. 266–240 BC). Later scholarchs include Lacydes of Cyrene, Carneades, Clitomachus, and Philo of Larissa ("the last undisputed head of the Academy"). Other notable members of Akademia include Aristotle, Heraclides Ponticus, Eudoxus of Cnidus, Philip of Opus, Crantor, and Antiochus of Ascalon.
Khan or KHAN may refer to:
Crash Course (also known as Driving Academy) is a 1988 made for television teen film directed by Oz Scott.
Crash Course centers on a group of high schoolers in a driver’s education class; many for the second or third time. The recently divorced teacher, super-passive Larry Pearl, is on thin ice with the football fanatic principal, Principal Paulson, who is being pressured by the district superintendent to raise driver’s education completion rates or lose his coveted football program. With this in mind, Principal Paulson and his assistant, with a secret desire for his job, Abner Frasier, hire an outside driver’s education instructor with a very tough reputation, Edna Savage, aka E.W. Savage, who quickly takes control of the class.
The plot focuses mostly on the students and their interactions with their teachers and each other. In the beginning, Rico is the loner with just a few friends, Chadley is the bookish nerd with few friends who longs to be cool and also longs to be a part of Vanessa’s life who is the young, friendly and attractive girl who had to fake her mother’s signature on her driver’s education permission slip. Kichi is the hip-hop Asian kid who often raps what he has to say and constantly flirts with Maria, the rich foreign girl who thinks that the right-of-way on the roadways always goes to (insert awesomely fake foreign Latino accent) “my father’s limo”. Finally you have stereotypical football meathead J.J., who needs to pass his English exam to keep his eligibility and constantly asks out and gets rejected by Alice, the tomboy whose father owns “Santini & Son” Concrete Company. Alice is portrayed as being the “son” her father wanted.
069 - pH and Buffers In this video Paul Andersen explains how buffer solutions maintain pH in a solution. A buffer solution is made up of a weak acid and its conjugate base. As strong acids or bases are added the pH remains stable. A good buffer solution has a pKa value equivalent to the pH and equal amounts of the weak acid and the conjugate base. Do you speak another language? Help me translate my videos: http://www.bozemanscience.com/translations/ Music Attribution Title: String Theory Artist: Herman Jolly http://sunsetvalley.bandcamp.com/track/string-theory All of the images are licensed under creative commons and public domain licensing: →AzaToth. Myoglobin 3D Structure, February 5, 2008. self made based on PDB entry. http://commons.wikimedia.org/wiki/File:Myoglobin.png. File:...
You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. In this episode, Hank talks about how nutty our world is via Buffers! He defines buffers and their compositions, talks about carbonate buffering systems in nature, acid rain, pH of buffers, and titration. Plus, a really cool experiment using indicators to showcase just how awesome buffers are. ***** AND NOW, A SUBBABLE MESSAGE! ***** "Olena, you Spanish-speaking Ukrainian, will you marry me?" -Emannuel Martinez -- Table of Contents Nature is Nutty 0:00 Carbonate Buffering and Acid Rain 0:35 Definition of Buffers 1:47 Composition of Buf...
This video covers the buffers section of the Acids and Bases topic from the Unit 4 portion of the A2 spec.
What are buffers? How are they made? How do they work?
Getting an intuitive understanding of buffers using le Chatelier's principle. Derivation of the Henderson-Hasselbalch equation. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/science/chemistry/acid-base-equilibrium/buffer-solutions/v/buffer-solution-calculations?utm_source=YT&utm;_medium=Desc&utm;_campaign=chemistry Missed the previous lesson? https://www.khanacademy.org/science/chemistry/acid-base-equilibrium/buffer-solutions/v/common-ion-effect?utm_source=YT&utm;_medium=Desc&utm;_campaign=chemistry Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactivity. This material roughly covers a first-year high school or college course, and a good understanding of algebra ...
Example of calculating the pH of solution that is 1.00 M acetic acid and 1.00 M sodium acetate using ICE table. Another example of calculating pH of a solution that is 0.15 M ammonia and 0.35 M ammonium nitrate. Watch the next lesson: https://www.khanacademy.org/science/chemistry/acid-base-equilibrium/buffer-solutions/v/buffers-and-hendersen-hasselbalch?utm_source=YT&utm;_medium=Desc&utm;_campaign=chemistry Missed the previous lesson? https://www.khanacademy.org/science/chemistry/acid-base-equilibrium/buffer-solutions/v/chem31-buffers?utm_source=YT&utm;_medium=Desc&utm;_campaign=chemistry Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactivity. This material roughly covers a first-year h...
Introduction to pH and the pH scale. Examples of calculating pH of pure water, bleach, and orange juice. Watch the next lesson: https://www.khanacademy.org/science/biology/water-acids-and-bases/acids-bases-and-ph/v/buffer-system?utm_source=YT&utm;_medium=Desc&utm;_campaign=biology Missed the previous lesson? https://www.khanacademy.org/science/biology/water-acids-and-bases/acids-bases-and-ph/v/bronsted-lowry-definition-of-acids-and-bases?utm_source=YT&utm;_medium=Desc&utm;_campaign=biology Biology on Khan Academy: Life is beautiful! From atoms to cells, from genes to proteins, from populations to ecosystems, biology is the study of the fascinating and intricate systems that make life possible. Dive in to learn more about the many branches of biology and why they are exciting and important....
Which buffer should you choose for your AR-15 and what is the difference between them? I tell you in this video. Everyone asks where I find AR-15 stuff in stock or where I order from, so here you are: https://goo.gl/GKqpCC A special thanks to Dustin at CIV Tactical for all of the help and advice! http://www.civtactical.com ----------------------------------------------------------------------------------- nsz85 on Instagram: http://www.instagram.com/nsz85 nsz85 on Facebook: http://www.facebook.com/nsz85 The Arms Guide: http://www.thearmsguide.com For 10% off of your non-bundled order from http://www.battlearmsdevelopment.com use promo code: nsz85 For 20% off of your order from http://www.tekmat.com use promo code: nsz85 Thank you for watching and please subscribe for future videos!
Listened to me. Saw right through me.
Didn't know me like you thought you knew me.
That's the danger of calling someone friend.
Hard heart, no pulse, still veins,
The vision comes over and over again.
Mistake you made
You jumped in and honestly thought it was safe.
My brave new heart will wander the streets like a dog.