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: Torsades de pointes
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: Aldosterone raises blood pressure and lowers potassium
See how Aldosterone effects the principal cells of the kidney to raise BP and lower potassium. Rishi is a pediatric infectious disease phys…
VideoFree13 minutes
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Health and medicine: Thinking about heartbeats
Find out what happens when things move very slowly through the AV Node! Rishi is a pediatric infectious disease physician and works at Khan…
VideoFree10 minutes
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Chemistry: Ideal gas equation example 1
Figuring out the number of moles of gas we have using the ideal gas equation: PV=nRT. Chemistry Did you know that everything is made out of…
VideoFree10 minutes
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Class 11 Physics (India) - Hindi: Production of sound (Hindi)
Sound is vibrating air. But how does the air start vibrating? Class 11 Physics (India) - Hindi To help students who prefer to learn by watc…
VideoFree4
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Class 11 Physics (India): Ball hits rod angular momentum example
David explains how a mass can have angular momentum even if it is traveling along a straight line. Then David shows how to solve the conser…
VideoFree15 minutes
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Organic chemistry: Nucleophilicity (nucleophile strength)
Nucleophilicity (Nucleophile Strength) Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic unders…
VideoFree14 minutes
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Electrical engineering: Inductor equations
We look at the inductor i-v equations in derivative and integral form. Electrical engineering Learn about electricity, circuit theory, and …
VideoFree13 minutes
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Electrical engineering: LC natural response derivation 4
In this final step of the derivation, we find two initial conditions and use them to come up with a sinusoidal solution for the LC natural …
VideoFree8 minutes
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Electrical engineering: Variable block (counter)
Store values using the variable block (build a counter) Electrical engineering Learn about electricity, circuit theory, and introductory el…
VideoFree8 minutes
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Electrical engineering: IR sensor
In this video we connect, bend and wire Bit-zee's IR sensor. This sensor will allow Bit-zee to receive commands from a universal remote con…
VideoFree2 minutes
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Electrical engineering: LC natural response intuition 2
We can predict the shape of voltage and current in an LC circuit by tracking the motion of charge as it flows back and forth. Electrical en…
VideoFree10 minutes
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Electrical engineering: What is inside a tap light?
In this video we go inside a tap light to discover what is inside and how it works. Electrical engineering Learn about electricity, circuit…
VideoFree6 minutes
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Electrical engineering: What is inside a hair dryer? (1 of 2)
In this video we explore ground fault interrupt circuits and how they keep us safe. Electrical engineering Learn about electricity, circuit…
VideoFree6 minutes
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Electrical engineering: Inverting op-amp
We analyze the inverting op-amp configuration, doing all the algebra from first principles. Electrical engineering Learn about electricity,…
VideoFree13 minutes