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 11 Physics (India): Sound Properties: Amplitude, period, frequency, wavelength
How to find the amplitude, period, frequency, and wavelength for a sound wave Class 11 Physics (India) Let's learn, practice, and master to…
VideoFree5 minutes
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Health and medicine: Patent ductus arteriosus
Patent ductus arteriosus is a medical condition where a blood vessel called the ductus arteriosus does not permanently close after birth. L…
VideoFree10 minutes
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Organic chemistry: Multiplicity: n + 1 rule
Using the n+1 rule to predict how many peaks to expect from spin-spin coupling. Organic chemistry Sal and Jay cover topics covered in colle…
VideoFree10 minutes
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Biology: Neuronal synapses (chemical)
How one neuron can stimulate (or inhibit) another neuron at a chemical synapse. Biology Life is beautiful! From atoms to cells, from genes …
VideoFree16 minutes
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Health and medicine: Myelodysplastic syndrome
Myelodysplastic syndrome is sometimes referred to as “pre-leukemia” or a condition that occurs before leukemia (although most patients will…
VideoFree8 minutes
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Health and medicine: Photoreceptors (rods vs cones)
In this video, I explore the similarities and differences between rods and cones. By Ronald Sahyouni. Health and medicine The medical world…
VideoFree5 minutes
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Class 12 Physics (India): Absorption and emission
Using shell model diagram to relate absorption to emission. Derives relationship between emitted photon and energy levels, the Balmer-Rydbe…
VideoFree11 minutes
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Class 10 Physics (India): Solved example on lens formula
Using lens formula can be tricky because we need to substitute using signs. In this video, we will take one example and discuss how to use …
VideoFree13
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Class 11 Physics (India): Thermal conductivity of metal and wood
Why metal at room temperature feels cooler than wood at room temperature. Class 11 Physics (India) Let's learn, practice, and master topics…
VideoFree7 minutes
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Class 11 Physics (India): Work example problems
David goes through some example problems on the concept of work Class 11 Physics (India) Let's learn, practice, and master topics of class …
VideoFree5 minutes
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Health and medicine: Pulmonary TB
Learn the effects that TB has on the lungs and some important clinical clues. These videos do not provide medical advice and are for inform…
VideoFree12 minutes
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Class 11 Physics (India) - Hindi: Inclined plane force components (Hindi)
Figuring out the components of the force due to gravity that are parallel and perpendicular to the surface of an inclined plane. Class 11 P…
VideoFree12
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Health and medicine: Restrictive cardiomyopathy: Pathophysiology and diagnosis
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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Organic chemistry: Intro to organic mechanisms
Identifying electrophiles and nucleophiles. Showing movement of electrons using curved arrows. Organic chemistry Sal and Jay cover topics c…
VideoFree12 minutes
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Class 11 Physics (India): Calculating average velocity or speed
Although speed and velocity are often words used interchangeably, in physics, they are distinct concepts. Speed is calculated by dividing t…
VideoFree12 minutes