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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Electrical engineering: Labeling voltages
Labeling voltages on a schematic is not a matter of "right" and "wrong". It simply establishes how the voltage appears in the analysis equa…
VideoFree11 minutes
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Electrical engineering: RC natural response - derivation
We derive the natural response of an RC circuit and discover it has an exponential form. Electrical engineering Learn about electricity, ci…
VideoFree11 minutes
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Electrical engineering: Secure and wire the motors
Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also have sections that let you get down a…
VideoFree4 minutes
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Health and medicine: Lung cancer diagnosis
How do we know a patient has lung cancer? Learn how health professionals use x-rays, computed tomography (CT scans), positron emission tomo…
VideoFree6 minutes
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Health and medicine: What is essential thrombocythemia?
Learn what is essential thrombocythemia as well as how to identify its signs and symptoms, diagnose it, and treat it. By Raja Narayan. Visi…
VideoFree10 minutes
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Health and medicine: Septic shock - pathophysiology and symptoms
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: The basal ganglia - Concepts of the indirect pathway
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree9 minutes
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Health and medicine: Flu vaccine risks and benefits
Learn about some of the common and uncommon risks and benefits associated with the flu vaccine! Rishi is a pediatric infectious disease phy…
VideoFree13 minutes
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Health and medicine: Auditory processing
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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Health and medicine: Lung cancer complications
Learn how the mass of a tumor, the spread of cancer cells, the immune system’s response, and the hormones released from cancer cells contri…
VideoFree8 minutes
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Health and medicine: Ependymal cells
This video describes the structure and function of ependymal cells. By Matt Jensen. Health and medicine The medical world can be a confusin…
VideoFree4 minutes
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Health and medicine: Aneurysm treatment
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree12 minutes
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Health and medicine: Buerger disease
Buerger disease (also known as the thromboangiitis obliterans) is a type of vasculitis that affects small and medium blood vessels and has …
VideoFree5 minutes
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Health and medicine: Stomach
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree6 minutes
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Health and medicine: Sympathetic nerves affect myosin activity
Check out how the amount of Myosin that is tugging on your heart can change depending on your activity level! Rishi is a pediatric infectio…
VideoFree12 minutes