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: Conservative forces (Hindi)
A conservative force exists when the work done by that force on an object is independent of the object's path. Instead, the work done by a …
VideoFree10
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Health and medicine: Causes of pericarditis
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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Health and medicine: Poliomyelitis diagnosis and treatment
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree6 minutes
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Class 11 Physics (India): Race cars with constant speed around curve
When acceleration could involve a change in direction and not speed. Class 11 Physics (India) Let's learn, practice, and master topics of c…
VideoFree5 minutes
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Organic chemistry: E-Z system
How to use the E-Z system to assign configurations to double bonds. Organic chemistry Sal and Jay cover topics covered in college organic c…
VideoFree12 minutes
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Class 11 Physics (India): Acceleration due to gravity at the space station
What is the acceleration due to gravity at the space station Class 11 Physics (India) Let's learn, practice, and master topics of class 11 …
VideoFree10 minutes
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Organic chemistry: Acetals as protecting groups and thioacetals
How acetals are used as protecting groups. Thioacetals are similar to acetals, but form from reaction of an aldehyde with a thiol (not an a…
VideoFree8 minutes
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Class 12 Physics (India): Induced current in a wire
Sal determines the current and EMF induced in a wire pulled through a magnetic field. Class 12 Physics (India) It is now time to dive deepe…
VideoFree12 minutes
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Health and medicine: The lymphatic system's role in immunity
Learn about how B and T cells reside in lymph nodes. Find out how that enables them to get a preview of what they need to be prepared to fi…
VideoFree10 minutes
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Physics: Ping pong ball launcher introduction
This video highlights the projectile (ping pong ball) launcher Physics Learn about the basic principles that govern the physical world arou…
VideoFree2 minutes
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Class 11 Physics (India): Riemann approximation introduction
Approximating the area under a curve using some rectangles. This is called a "Riemann sum". Class 11 Physics (India) Let's learn, practice,…
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Health and medicine: What is epiglottitis?
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree7 minutes
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Organic chemistry: Friedel-Crafts acylation
The mechanism of acylation. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic understanding of …
VideoFree9 minutes
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Class 10 Physics (India): Dispersion
The index of refraction in a material isn't always the same for every wavelength. This is how prisms split white light into so many colors.…
VideoFree2 minutes
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Health and medicine: Sepsis: Systemic inflammatory response syndrome (SIRS) to multiple organ dysfunction syndrome (MODS)
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree8 minutes