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 12 Physics (India): Young's double slit problem solving
An example problem involving a double slit experiment Class 12 Physics (India) It is now time to dive deeper into the world of physics with…
VideoFree7 minutes
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Physics: Einstein velocity addition formula derivation
Einstein velocity addition formula derivation Physics Learn about the basic principles that govern the physical world around us. Solid unde…
VideoFree8 minutes
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Class 10 Physics (India): Thin lens formula
Let's derive the thin lens formula which connects the object distance to the image distance. Class 10 Physics (India) Let's explore the mys…
VideoFree10
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Class 10 Physics (India): Presbyopia
Let's explore what are the symptoms and causes of Presbyopia. We will also see how bifocals correct them. Created by Mahesh Shenoy Class 10…
VideoFree6
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Class 11 Physics (India): Tangent identities: periodicity
Sal solves a problem by considering the periodicity of the tangent function. Class 11 Physics (India) Let's learn, practice, and master top…
VideoFree4
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Class 11 Physics (India) - Hindi: Acceleration due to gravity at the space station (Hindi)
What is the acceleration due to gravity at the space station? Class 11 Physics (India) - Hindi To help students who prefer to learn by watc…
VideoFree9
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Health and medicine: Flow through the heart
Learn how blood flows through the heart, and understand the difference between systemic and pulmonary blood flow. Rishi is a pediatric infe…
VideoFree8 minutes
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Class 11 Physics (India): Total final velocity for projectile
Calculating the total final velocity for a projectile landing at a different altitude Class 11 Physics (India) Let's learn, practice, and m…
VideoFree8 minutes
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Chemistry: Rate law and reaction order
Using method of initial rates to determine the order of a reaction. Chemistry Did you know that everything is made out of chemicals? Chemis…
VideoFree11 minutes
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Health and medicine: Tonsillitis
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree9 minutes
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Health and medicine: Hematopoiesis
Hematopoiesis is the process of creating new blood cells in the body. All blood cells start off as hematopoietic stem cells, and then speci…
VideoFree10 minutes
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Class 11 Physics (India): Cross product 2
A little more intuition on the cross product. Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (NCERT)…
VideoFree11 minutes
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Class 11 Physics (India): Surface tension
Surface tension in water, and how the surface tension is related to hydrogen bonding. Class 11 Physics (India) Let's learn, practice, and m…
VideoFree5 minutes
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Health and medicine: Central chemoreceptors
Find out how the your body uses special cells that are central to the brain (inside the brain) to sense levels of CO2 and pH. Rishi is a pe…
VideoFree8 minutes
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Health and medicine: A race to keep pace!
Find out how the various pacemaker cells in the heart actually race against the clock to try to keep pace for the heart, and how the heart …
VideoFree13 minutes