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: R nought and vaccine coverage
Dr. Rishi Desai is a pediatric infectious disease physician and former epidemiologist with the Centers for Disease Control and Prevention (…
VideoFree9 minutes
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Electrical engineering: Application of the fundamental laws (setup)
We can solve circuits by the direct application of the fundamental laws: Ohm's Law and Kirchhoff's Laws. (Part 1 of 2) Electrical engineeri…
VideoFree8 minutes
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Electrical engineering: Digital camera connections
This video shows you how to "hotwire" a digital camera. This video outlines the first step in making our digital camera work in the Bit-zee…
VideoFree7 minutes
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Health and medicine: Primary and Secondary TB
Learn some key features of primary TB and how it differs from secondary TB. Rishi is a pediatric infectious disease physician and works at …
VideoFree10 minutes
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Health and medicine: What is gonorrhea?
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: Shunting in the heart
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): Combined vector operations
Watch Sal find new vector 3u + 1/5w when u = (2, -1) and w = (-5, 5). Class 11 Physics (India) Let's learn, practice, and master topics of …
VideoFree6
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Physics: Compass: Which way is north?
how would you know which way is north if you had no reference? Can the direction of stroke alone tell you this? Are you sure? Physics Learn…
VideoFree1 minute
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Class 12 Physics (India): Kirchhoff's voltage law
Kirchhoff's Voltage Law says if you travel around any loop in a circuit, the voltages across the elements add up to zero. Class 12 Physics …
VideoFree7 minutes
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Electrical engineering: Wheel mounts and fenders
In this video we show you how to create Bit-zee's fenders out of hair dryer motor mounts and we also take you through how to mount the hair…
VideoFree10 minutes
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Class 11 Physics (India) - Hindi: Specific gravity (Hindi)
In this video Ram explains what specific gravity means. He also shows how to calculate the value for specific gravity and use it to determi…
VideoFree14
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Class 12 Physics (India): Snell's law example 1
Snell's Law Example 1 Class 12 Physics (India) It is now time to dive deeper into the world of physics with topics from class 12 (NCERT) su…
VideoFree11 minutes
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Electrical engineering: Trigonometry review
A quick review of some ideas from trigonometry that will help us with AC analysis. The definitions of sine, cosine, and tangent, circles, d…
VideoFree8 minutes
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Class 11 Physics (India) - Hindi: Acceleration (Hindi)
Visualizing, adding and breaking down vectors in 2 dimensions Class 11 Physics (India) - Hindi To help students who prefer to learn by watc…
VideoFree6
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Class 11 Physics (India): Connecting f and f' graphically
More practice with the relationship between the graph of a function and the graph of its derivative. Class 11 Physics (India) Let's learn, …
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