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: Diode graphical solution
We solve a diode circuit graphically by plotting a diode i-v curve and resistor to find the intersection. Graphical solution methods are a …
VideoFree8 minutes
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Electrical engineering: What is inside a DVD player? (4 of 5)
In this video we explore the DVD ROM components inside a DVD player. Electrical engineering Learn about electricity, circuit theory, and in…
VideoFree8 minutes
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Electrical engineering: Sine of time
If we introduce time as the argument to the sine function, we get a sine wave. Animated. Electrical engineering Learn about electricity, ci…
VideoFree11 minutes
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Electrical engineering: LC natural response derivation 3
We use Euler's Formula to change our complex exponential solution into a solution expressed in terms of sines and cosines. Electrical engin…
VideoFree7 minutes
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Electrical engineering: Design review (calibration)
Final step in the coin detector challenge Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We …
VideoFree4 minutes
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Electrical engineering: Sketching exponentials
Voltages and currents often have an exponential shape. We look at some properties of exponential curves and learn how to rapidly sketch acc…
VideoFree8 minutes
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Electrical engineering: Parallel resistors (part 2)
Multiple resistors in parallel can be combined into a single equivalent resistor Electrical engineering Learn about electricity, circuit th…
VideoFree4 minutes
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Electrical engineering: Motor controller
In this video we take you step by step through building the L298 Motor driver. This controller allows you to use your Arduino to control th…
VideoFree10 minutes
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Electrical engineering: Demo: coin detector
demonstration of a simple coin detector Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We al…
VideoFree1 minute
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Electrical engineering: What is an operational amplifier?
The "operational amplifier" has two differential inputs and very high gain. Willy describes the symbol and properties of an op-amp. Op-amps…
VideoFree12 minutes
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Health and medicine: Treating type II diabetes - A practical approach
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree2 minutes
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Health and medicine: Arteriosclerosis, arteriolosclerosis, and atherosclerosis
Learn the difference between Arteriosclerosis, Arteriolosclerosis, and Atherosclerosis! Rishi is a pediatric infectious disease physician a…
VideoFree9 minutes
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Health and medicine: Sinusitis diagnosis and treatment
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree9 minutes
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Electrical engineering: Ideal sources
Introduction to the voltage source and current source. Electrical engineering Learn about electricity, circuit theory, and introductory ele…
VideoFree3 minutes
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Health and medicine: Atrial septal defect
An atrial septal defect is a hole between the two atriums of the heart. Normally this hole is present at birth but closes within a few days…
VideoFree10 minutes