Khan Academy: 2757 products
Khan Academy is an organization on a mission. We're a not-for-profit with the goal of changing education for the better by providing a free world-class education for anyone anywhere.
All of the site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get …
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Physics: Introduction to the Lorentz transformation
So we've got two coordinate systems from the perspectives of two observers. How can we convert spacetime coordinates between these? Enter t…
VideoFree8 minutes
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Health and medicine: How to identify murmurs
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree9 minutes
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Health and medicine: Asthma severity
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree3 minutes
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Physics: Optimal angle for a projectile part 4: Finding the optimal angle and distance with a bit of calculus
Physics Learn about the basic principles that govern the physical world around us. Solid understanding of algebra and a basic understanding…
VideoFree11 minutes
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Health and medicine: Aging and cognitive abilities
Learn about how cognitive abilities change as we age. Health and medicine The medical world can be a confusing place. Patients, their fami…
VideoFree3 minutes
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Physics: AP Physics 1 review of Energy and Work
In this video David explains the concepts in Work and Energy and does an example problem for each concept. Link for document: https://www.d…
VideoFree12 minutes
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Class 11 Physics (India): Antiderivatives and indefinite integrals
What's the opposite of a derivative? It's something called the "indefinite integral". Class 11 Physics (India) Let's learn, practice, and m…
VideoFree4
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Class 12 Physics (India): Photon Momentum
In this video, David (and surfer Dan) explain how to determine the momentum of a photon. Class 12 Physics (India) It is now time to dive de…
VideoFree3 minutes
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Electrical engineering: 5 volt power distribution board
In this video we hack apart a bread board to create a 5 volt power distribution strip. The 5 volts comes from the center pin in the motor c…
VideoFree5 minutes
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Health and medicine: Autonomic nervous system effects on the heart
Carefully go through each of the four major effects that the sympathetic and parasympathetic system has on your heart: Chronotropy, Dromotr…
VideoFree6 minutes
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Class 11 Physics (India): Acceleration of aircraft carrier take-off
Using what we know about take-off velocity and runway length to determine acceleration Class 11 Physics (India) Let's learn, practice, and …
VideoFree14 minutes
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Health and medicine: Tetralogy of fallot
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree11 minutes
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Organic chemistry: Alkane and cycloalkane nomenclature I
Using IUPAC rules to name linear, branched, and cyclic hydrocarbons Organic chemistry Sal and Jay cover topics covered in college organic c…
VideoFree13 minutes
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Physics: Electrode (distance test)
Does the distance between the copper and zinc electrodes matter? What happens to the deflection when we hold them close vs. far apart? Why …
VideoFree1 minute
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Health and medicine: What is Parkinson's disease?
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree9 minutes