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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Chemistry: Balancing another combustion reaction
Balancing the combustion reaction of ethane, C₂H₆ Chemistry Did you know that everything is made out of chemicals? Chemistry is the study o…
VideoFree5 minutes
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Electrical engineering: Finding Fourier coefficients for square wave
Finding Fourier coefficients for a square wave Electrical engineering Learn about electricity, circuit theory, and introductory electronics…
VideoFree11 minutes
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Class 11 Physics (India): Solving elastic collision problems the hard way
In this video, David shows how to solve elastic problems the hard way. In other words, using conservation of momentum and conservation of k…
VideoFree16 minutes
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Chemistry: Resonance and dot structures
Drawing resonance structures and resonance hybrid using example of nitrate anion. Chemistry Did you know that everything is made out of che…
VideoFree6 minutes
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Class 11 Physics (India): Treating systems (the hard way)
Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (NCERT) starting with kinematics and then moving to d…
VideoFree15 minutes
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Chemistry: VSEPR for 6 electron clouds
VSEPR for six electron clouds including examples for octahedral, square pyramidal, and planar molecules. Chemistry Did you know that everyt…
VideoFree12 minutes
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Health and medicine: Making flu vaccine each year
Learn about how the flu vaccine is made every year and how they name the strains that they put inside. Rishi is a pediatric infectious dise…
VideoFree9 minutes
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Electrical engineering: Planning and propulsion
The video covers the first stages of idea generation for Bit-zee and how to make Bit-zee move. Electrical engineering Learn about electrici…
VideoFree8 minutes
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Health and medicine: Molarity vs. osmolarity
Molarity and osmolarity may sound similar, but they are two distinct concepts. Molarity (M) is the number of moles of solute per liter of s…
VideoFree12 minutes
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Class 11 Physics (India): Vector components from magnitude & direction
Sal finds the components of a couple of vectors given in magnitude and direction form. Class 11 Physics (India) Let's learn, practice, and …
VideoFree10
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Class 11 Physics (India): Maxwell-Boltzmann distribution
Using the Maxwell-Boltzmann distribution to visualize the distribution of speeds of particles at different temperatures. Class 11 Physics (…
VideoFree10 minutes
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Health and medicine: Spermatogenesis
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: Getting Ea (arterial elastance) from the PV loop
Find out how to use the PV loop to draw the Ea (Arterial Elastance) line, and what it represents. Rishi is a pediatric infectious disease p…
VideoFree11 minutes
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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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Organic chemistry: Conjugation and color
Why extensively conjugated compounds absorb light in the visible region and thus have color. Organic chemistry Sal and Jay cover topics cov…
VideoFree10 minutes