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: 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: Impedance of simple networks
Impedance of 2 elements in series is a complex number. Impedance terminology: reactance, susceptance, admittance. Electrical engineering Le…
VideoFree12 minutes
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Electrical engineering: Integral of sin(mt) and cos(mt)
Integrating sin(mt) and cos(mt) over a full period equals zero. Electrical engineering Learn about electricity, circuit theory, and introdu…
VideoFree6 minutes
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Electrical engineering: Ben Eater's Spider
In this video Karl talks to Ben Eater about his improvements to the Spider bot platform. Electrical engineering Learn about electricity, ci…
VideoFree3 minutes
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Electrical engineering: Spider's motor controller
In this video we show you how to connect and wire Spider's motor controller. Electrical engineering Learn about electricity, circuit theory…
VideoFree3 minutes
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Electrical engineering: Bumper switches
In this video we create and wire Bit-zee's bumper switches Electrical engineering Learn about electricity, circuit theory, and introductory…
VideoFree10 minutes
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Electrical engineering: ELI the ICE man
Remember the relationship between current and voltage in an inductor and capacitor with the help of ELI the ICE man. Electrical engineering…
VideoFree10 minutes
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Electrical engineering: Bit-zeeeeeeeeeee (long version)
Bit-zee goes to school Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also have sections …
VideoFree2 minutes
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Electrical engineering: Virtual ground
The idea of a "virtual ground" makes some simplifying assumptions, giving us an elegant and simple way to look at op-amp circuits. Electric…
VideoFree6 minutes
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Electrical engineering: Node voltage method (steps 1 to 4)
The Node Voltage Method solves circuits with the minimum number of KCL equations. Steps 1 to 4 out of 5. Electrical engineering Learn about…
VideoFree10 minutes
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Electrical engineering: LC natural response example
We solve the voltage and current of an example LC circuit with given values for L and C, and an initial charge on the capacitor Electrical …
VideoFree7 minutes
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Electrical engineering: Spider's click n' stick
In this video we show you how to hack a click n' stick tap light to make a body for Spider Electrical engineering Learn about electricity, …
VideoFree4 minutes
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Class 11 Physics (India): Thermal energy from friction
In this video David shows how to find the energy generated by the force of friction and solves an example conservation of energy problem in…
VideoFree15 minutes
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Class 11 Physics (India) - Hindi: Treating systems the hard way (Hindi)
Solving pulley block problems by considering a system. Class 11 Physics (India) - Hindi To help students who prefer to learn by watching Hi…
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Organic chemistry: Nomenclature and preparation of epoxides
Naming of epoxides (cyclic ethers with three atoms in the ring). Preparation of epoxides from alkenes. Organic chemistry Sal and Jay cover …
VideoFree9 minutes