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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Health and medicine: What is tertiary syphilis?
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree9 minutes
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Class 11 Physics (India): Tangent identities: symmetry
Sal finds several trigonometric identities for tangent by considering horizontal and vertical symmetries of the unit circle. Class 11 Physi…
VideoFree7
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Health and medicine: HAART treatment for HIV - Who, what, why, when, and how
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree9 minutes
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Class 11 Physics (India): Intro to logarithms
Sal explains what logarithms are and gives a few examples of finding logarithms. Class 11 Physics (India) Let's learn, practice, and master…
VideoFree7
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Health and medicine: Permeability and membrane potentials
Find out why a cell that is permeable to multiple ions has a membrane potential that is influenced by the ion with the highest permeability…
VideoFree13 minutes
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Class 11 Physics (India) - Hindi: The equation of a wave (Hindi)
In this video Ram shows how to determine the equation of a wave, how that equation works, and what the equation represents. Class 11 Physic…
VideoFree18
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Class 11 Physics (India): Equation for simple harmonic oscillators
David explains the equation that represents the motion of a simple harmonic oscillator and solves an example problem. Class 11 Physics (Ind…
VideoFree14 minutes
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Electrical engineering: LC natural response example
We solve the voltage and current of an example LC circuit with given values for L and C, and an initial charge on the capacitor Electrical …
VideoFree7 minutes
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Class 12 Physics (India): Electric field definition
In this video David explains why physicists came up with the idea of the electric field, how it's useful, and explains how the electric fie…
VideoFree14 minutes
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Class 11 Physics (India): Derivative as slope of curve
Sal solves a couple of problems where he interprets the derivative of a function at a point as the slope of the curve, or of the line tange…
VideoFree6
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Health and medicine: Bohr effect vs. Haldane effect
Take a close look at how some friendly competition for Hemoglobin allows the body to more efficiently move oxygen and carbon Dioxide around…
VideoFree14 minutes
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Health and medicine: Emphysema diagnosis
How do we know a patient has emphysema? Learn how the lungs in chest x-rays look hyperinflated, how spirometry can reveal decreased lung fu…
VideoFree7 minutes
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Class 11 Physics (India): Secant line with arbitrary difference
Sal finds the slope of the secant line on the graph of ln(x) between the points (2,ln2) and (2+h,ln(2+h)). Class 11 Physics (India) Let's l…
VideoFree4
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Health and medicine: What are dementia and Alzheimer's
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree5 minutes
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Organic chemistry: Halohydrin formation
Reaction of an alkene with a diatomic halogen and water, converting the double bond to a single bond with halogen and hydroxyl substituents…
VideoFree13 minutes