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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: Transposition of great arteries

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Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…

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Class 12 Physics (India): The history of atomic chemistry

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How did we get here? Well, in terms of Atomic Chemistry, Hank takes us on a tour of the folks that were part of the long chain of other fol…

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Health and medicine: Pertussis diagnosis and treatment

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Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…

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Organic chemistry: Preparation of alkyl halides from alcohols

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How to convert an alcohol into an alkyl halide. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Bas…

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Class 11 Physics (India) - Hindi: Work example problems (Hindi)

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Ram goes through some example problems on the concept of work. Class 11 Physics (India) - Hindi To help students who prefer to learn by wat…

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Class 11 Physics (India) - Hindi: More on moment of inertia (Hindi)

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In this video Ram explains more about what moment of inertia means, as well as giving the moments of inertia for commonly shaped objects. C…

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Class 10 Physics (India): Advanced sunrise & delayed sunset

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Why is the sun squashed during sunrise and sunset? Why do we see the sun even before it rises? Our atmosphere is the main cause of this. We…

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Health and medicine: Theories of language and cognition

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Learn about theories of the relationship between language and cognition. By Carole Yue. Health and medicine The medical world can be a conf…

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Class 11 Physics (India): Unit vectors and engineering notation

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Using unit vectors to represent the components of a vector Class 11 Physics (India) Let's learn, practice, and master topics of class 11 ph…

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Chemistry: Acid strength, anion size, and bond energy

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How anion size and bond dissociation energies affect acid strength Chemistry Did you know that everything is made out of chemicals? Chemist…

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Health and medicine: Umbilical vessels and the ductus venosus

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Watch as fetal blood goes through umbilical vessels and takes a shortcut through the Ductus Venosus to make it back to the heart. Rishi is …

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Electrical engineering: Inductor kickback (1 of 2)

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We notice how important it is to give inductor current a place to flow Electrical engineering Learn about electricity, circuit theory, and …

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Health and medicine: Calculate your own osmolarity

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Learn how to use three lab values (Sodium, glucose, and BUN) to approximate your plasma osmolarity. Rishi is a pediatric infectious disease…

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Electrical engineering: Inductor kickback (2 of 2)

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We give the inductor's kickback current a path to flow by adding a diode Electrical engineering Learn about electricity, circuit theory, an…

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Class 11 Physics (India): Breaking down forces for free body diagrams

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Sal explains how to draw free body diagrams when forces are applied at an angle. How to find horizontal and vertical components of an angle…