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: Astrocytes
This video describes the structure and function of astrocytes. By Matt Jensen. Health and medicine The medical world can be a confusing pla…
VideoFree7 minutes
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Electrical engineering: Node voltage method (step 5)
Last step of the Node voltage method for analyzing circuits: Solve the system of simultaneous equations Electrical engineering Learn about …
VideoFree6 minutes
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Class 11 Physics (India): Decibel Scale
We often use this logarithmic scale to describe the intensity of sound Class 11 Physics (India) Let's learn, practice, and master topics of…
VideoFree11 minutes
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Electrical engineering: What is inside a digital camera? (2 of 2)
In this video we compare different revisions of the same digital camera. Electrical engineering Learn about electricity, circuit theory, an…
VideoFree3 minutes
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Class 11 Physics (India): Thermodynamics part 1: Molecular theory of gases
Intuition of how gases generate pressure in a container and why pressure x volume is proportional to the combined kinetic energy of the mol…
VideoFree10 minutes
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Organic chemistry: Biological redox reactions
Redox reactions of alcohols in biological systems. Role of NADH/NAD+ in these reactions. Organic chemistry Sal and Jay cover topics covered…
VideoFree10 minutes
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Class 11 Physics (India): Radius comparison from velocity and angular velocity: Worked example
Predicting which spinning disc has a larger radius from angular velocity and the linear velocity of a point on the edge. Class 11 Physics (…
VideoFree4
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Class 11 Physics (India) - Hindi: Why distance is area under velocity-time line (Hindi)
Understanding why distance is the area under velocity-time line. Class 11 Physics (India) - Hindi To help students who prefer to learn by w…
VideoFree3
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Health and medicine: Anemia pathophysiology
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree10 minutes
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Class 11 Physics (India) - Hindi: Acceleration of aircraft carrier take off (Hindi)
Using what we know about take-off velocity and runway length to determine acceleration. Class 11 Physics (India) - Hindi To help students w…
VideoFree9
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Health and medicine: Interpreting the PPD
Find out how the cutoff for a "positive PPD" depends on clinical clues. Rishi is a pediatric infectious disease physician and works at Khan…
VideoFree7 minutes
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Class 11 Physics (India): Worked example: finding unit vector with given direction
Learn what a unit vector is and how to find a unit vector in the direction of a given vector. Class 11 Physics (India) Let's learn, practic…
VideoFree5
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Class 12 Physics (India): Magnetic force between two currents going in the same direction
Sal shows how to determine the magnetic force between two currents going in the same direction. Class 12 Physics (India) It is now time to …
VideoFree11 minutes
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Class 11 Physics (India) - Hindi: Relative speed of sound in solids, liquids, and gases (Hindi)
Sounds travels at different speeds in different media. Class 11 Physics (India) - Hindi To help students who prefer to learn by watching Hi…
VideoFree6
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Class 12 Physics (India): Writing nuclear equations for alpha, beta, and gamma decay
Writing nuclear equations for alpha, beta, and gamma decay. Class 12 Physics (India) It is now time to dive deeper into the world of physic…
VideoFree8 minutes