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: Derivation of the mirror equation
In this video David derives the mirror equation and magnification equation. Physics Learn about the basic principles that govern the physic…
VideoFree15 minutes
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Class 12 Physics (India): Magnetic force between two currents going in opposite directions
Sal shows how to determine the magnetic force between two currents going in opposite directions. Class 12 Physics (India) It is now time to…
VideoFree11 minutes
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Physics: Pith ball electroscope
Primitive device for measuring electrostatic force Physics Learn about the basic principles that govern the physical world around us. Solid…
VideoFree1 minute
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Class 11 Physics (India) - Hindi: Projectile height given time (Hindi)
Figuring out how high a ball gets given how long it spends in the air. Class 11 Physics (India) - Hindi To help students who prefer to lear…
VideoFree8
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Health and medicine: Treatments for depression - Psychological therapies
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree8 minutes
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Health and medicine: Mouth
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree8 minutes
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Electrical engineering: Switch statements & logic
Control switch statments using logic Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also …
VideoFree7 minutes
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Class 11 Physics (India) - Hindi: The force of tension (Hindi)
Ram explains what the force of tension is, how to solve for it, and some common misconceptions involving the force of tension. Class 11 Phy…
VideoFree15
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Class 12 Physics (India): Half-life and carbon dating
Carbon dating is a real-life example of a first-order reaction. This video explains half-life in the context of radioactive decay. Class 12…
VideoFree13 minutes
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Electrical engineering: Node voltage method (steps 1 to 4)
The Node Voltage Method solves circuits with the minimum number of KCL equations. Steps 1 to 4 out of 5. Electrical engineering Learn about…
VideoFree10 minutes
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Electrical engineering: Spout's sliding SPDT switch
Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also have sections that let you get down a…
VideoFree5 minutes
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Health and medicine: Diagnosis of hypertension
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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Physics: Electrolytic conductivity
Liquids can also conduct electricity Physics Learn about the basic principles that govern the physical world around us. Solid understanding…
VideoFree4 minutes
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Class 12 Physics (India): Electric current
Current is the flow of charge. We measure current by counting the amount of charge passing through a boundary in one second. Class 12 Physi…
VideoFree9 minutes
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Electrical engineering: Connect the SPDT switches
Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also have sections that let you get down a…
VideoFree1 minute