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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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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Physics: Listen to variable resistance
Here we draw a line on a page and use it as a variable resistor in series with a speaker. What relationship do we hear? Does it sound linea…
VideoFree1 minute
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Electrical engineering: Spout switches
Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also have sections that let you get down a…
VideoFree10 minutes
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Health and medicine: Pathophysiology of herpes
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree7 minutes
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Class 10 Physics (India): Convex lenses
Convex Lenses Class 10 Physics (India) Let's explore the mysteries of light and electricity. From how light reflects to correcting defects …
VideoFree9 minutes
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Physics: Electrolyte (salt test)
What happens to the deflection when we add salt to an electrolyte? Why? Physics Learn about the basic principles that govern the physical w…
VideoFree1 minute
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Class 11 Physics (India): Thermodynamics part 3: Kelvin scale and Ideal gas law example
Sal makes the case for the Kelvin scale of temperature and absolute zero by showing that temperature is proportional to kinetic energy. The…
VideoFree10 minutes
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Health and medicine: Thoracic aortic aneurysms
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree15 minutes
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Class 12 Physics (India): Zener diode & Zener breakdown
Heavily doped diodes can undergo a different kind of breakdown. In this video let's explore what happens in a very heavily doped diode. The…
VideoFree13
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Health and medicine: ALS - Amyotrophic lateral sclerosis
Sal explains the disease ALS, amyotrophic lateral sclerosis, and takes the "ice bucket challenge." Health and medicine The medical world ca…
VideoFree4 minutes
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Organic chemistry: Bonds as springs
How frequency of bond vibration can be compared to the oscillation of a spring. Organic chemistry Sal and Jay cover topics covered in colle…
VideoFree12 minutes
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Class 12 Physics (India): Magnifying power of telescope
Let's figure out the magnifying power (magnification) of our telescope. Class 12 Physics (India) It is now time to dive deeper into the wor…
VideoFree7
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Class 11 Physics (India): Worked example: positive & negative intervals
Finding the positive or negative intervals of a function from its graph. Class 11 Physics (India) Let's learn, practice, and master topics …
VideoFree1
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Class 11 Physics (India) - Hindi: Volume expansion coefficient (Hindi)
If a body is heated then it will expand and its volume will change. Let's find out how to calculate the change in the volume. Class 11 Phys…
VideoFree8
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Health and medicine: Heart attack (myocardial infarction) interventions and treatment
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree7 minutes