Added over 4 years ago | 00:43:20 | 5396 views
10/19/2007 12:50 PM Wong AuditoriumJoshua Tenenbaum, PhD '99, Paul E. Newton Career Development Professor, Department of Brain and Cognitive Sciences, MITDescription: How do kids manage to figure out that the word "dog" applies to a whol...
Added 7 years ago | 00:00:46 | 22578 views
Quick demo of a custom 3-phase AC induction motor controller I made for a term project. It lets you set synchronous speed and then observe DC and AC voltage/current sensors at different operating points. If you know me, you know it's ...
Added over 7 years ago | 00:02:54 | 48325 views
Leyden Jars, an early style of capacitor, can be connected to the two electrodes of the Wimshurst Machine. They will store charge as it is generated, giving a much stronger spark across the gap. Next we have a three-piece dissectible ...
Added over 7 years ago | 00:02:51 | 50357 views
First, a dipole consisting of two conducting balls connected by an insulating rod swings at the end of a long plexiglass rod. The two balls are charged oppositely by touching it to a conducting rod in the field of a Van de Graaff generat...
Added almost 8 years ago | 00:00:49 | 42726 views
Two flexible wires are suspended vertically. The wires are conected in series or parallel to a 12V storage battery. When the wires are connected in series and power is applied they will repel each other; when they are connected in par...
Added almost 8 years ago | 00:00:47 | 43468 views
A magnet with a very strong magnetic field is held in place on an aluminum disk. The disk is attached to a motor powered by variable AC current. When the disk rotates, the magnet will levitate above it due to eddy currents generated in ...
Added 8 years ago | 00:01:11 | 45291 views
A solid copper pendulum is mounted between the poles of an electromagnet (solenoid). The pendulum is set into motion, and then the magnets are turned on. The magnets induce eddy currents in the copper which oppose the motion of the pe...
Added 8 years ago | 00:01:02 | 35032 views
One wire coil is connected to a radio, and another is connected to a speaker. The two coils are not connected to each other. The radio signal is transmitted through the induced magnetic field caused by the current in the wires. The s...
Added 8 years ago | 00:00:36 | 53136 views
A solenoid enclosed in another solenoid is connected to a 12 volt battery. Also contained in the circuit is an iron contact switch connected to a spring arm, with a gap on one side of it. When the circuit is closed, the inner solenoid a...
Added 8 years ago | 00:01:29 | 74993 views
A toroid with three different wire windings is connected to 220 VAC 3-phase voltage. The voltage phase of each of the three windings lags 120 degrees behind the next, creating a changing induced magnetic field. The changing field causes...
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