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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Physics: Parabolic mirrors 2
Parabolic Mirrors 2 Physics Learn about the basic principles that govern the physical world around us. Solid understanding of algebra and a…
VideoFree13 minutes
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Class 11 Physics (India): Wave interference
David explains wave interference and solves a few examples to find the value of the total wave when two wave pulses overlap. Class 11 Physi…
VideoFree7 minutes
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Health and medicine: Pharyngitis
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: The basal ganglia - The direct pathway
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree11 minutes
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Class 11 Physics (India) - Hindi: Horizontally launched projectile (Hindi)
In this video Ram explains how to solve for the horizontal displacement when the projectile starts with a horizontal initial velocity. He a…
VideoFree12
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Class 11 Physics (India): Properties of periodic waves
Amplitude, period, frequency and wavelength of periodic waves. How to calculate wave velocity. Class 11 Physics (India) Let's learn, practi…
VideoFree14 minutes
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Organic chemistry: Bonds as springs
How frequency of bond vibration can be compared to the oscillation of a spring. Organic chemistry Sal and Jay cover topics covered in colle…
VideoFree12 minutes
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Class 11 Physics (India): Doppler effect introduction
Learn about the Doppler effect and how it explains the change in frequency of a wave when its source and an observer are moving. Class 11 P…
VideoFree11 minutes
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Health and medicine: Stages of dementia and Alzheimer's disease
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree6 minutes
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Class 11 Physics (India): Unit vector notation (part 2)
More on unit vector notation. Showing that adding the x and y components of two vectors is equivalent to adding the vectors visually using …
VideoFree9 minutes
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Health and medicine: Transudate vs exudate
In a pleural effusion, different fluids can enter the pleural cavity. Transudate is fluid pushed through the capillary due to high pressure…
VideoFree9 minutes
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Health and medicine: Astrocytes
This video describes the structure and function of astrocytes. By Matt Jensen. Health and medicine The medical world can be a confusing pla…
VideoFree7 minutes
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Class 10 Physics (India): Thin lens formula
Let's derive the thin lens formula which connects the object distance to the image distance. Class 10 Physics (India) Let's explore the mys…
VideoFree10
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Class 11 Physics (India) - Hindi: Visualizing vectors in 2 dimensions (Hindi)
Visualizing, adding and breaking down vectors in 2 dimensions. Class 11 Physics (India) - Hindi To help students who prefer to learn by wat…
VideoFree14
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Class 11 Physics (India): Derivative & the direction of a function
Sal analyzes various graphs to find intervals where the derivative of the graphed function is positive or negative. Class 11 Physics (India…
VideoFree3