How a current can be induced in a loop of wire by a change in magnetic flux.
Example calculating induced current based on change in flux.
How Faraday's Law is used to generate electricity in turbines.
Feedback is the design technique where a part of the amplifier output "feeds back" to the input of the amplifier. The overall effect creates a very stable gain determined by resistor ratios. Created by Willy McAllister.
A quick outline of how & why it works. Created by Brit Cruise.
Introduction to a key result in elementary number theory using a visualization with beads. Created by Brit Cruise.
How haploid gametes (sperm and egg cells) combine to form a diploid zygote with two sets of chromosomes. Created by Sal Khan.
Finding Fourier coefficients for a square wave. Created by Sal Khan.
An overview of Finding elements by CSS selector
An overview of Finding elements by ID
Learn how you can find elements on your page by passing CSS selectors into the jQuery function.
Sal solves a Bernoulli's equation example problem where fluid is moving through a pipe of varying diameter. Created by Sal Khan.
Sal finishes the example problem where liquid exits a hole in a container. Created by Sal Khan.
Using our understanding of fluid pressure to figure out the height of a column of mercury. Created by Sal Khan.
An overview of Finding multiple DOM elements by tag or class name
David explains how to determine the torque exerted by a non-perpendicular force. Created by David SantoPietro.
How the indigenous Australians used fire to change their environment. Created by Sal Khan.
Energy cannot be created or destroyed. It can only be transferred or converted from one form to another.
Overview of the first law of thermodynamics.
Worked example of the first law of thermodynamics.