Added 3 years ago | 00:01:38 | 7451 views
A magnet is dropped down a conducting copper pipe and feels a resistive force. The falling magent induces a current in the copper pipe and, by Lenz's Law, the current creates a magnetic field that opposes the changing field of the ...
Added over 3 years ago | 00:02:22 | 9782 views
First, liquid oxygen is made by passing gaseous oxygen through a tube submerged in liquid nitrogen. Then the oxygen is poured between the poles of a strong electro magnet. The paramagnetic nature of the oxygen causes an induced dipole....
Added over 3 years ago | 00:43:20 | 2942 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 over 3 years ago | 00:03:27 | 11022 views
Three aluminium objects are dropped through a magnetic field. The objects move slower entering and leaving the field due to changes in the flux through the object. The change in the flux through a conductor results in a force which opp...
Added almost 6 years ago | 00:00:44 | 21456 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 6 years ago | 00:02:54 | 44715 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 6 years ago | 00:02:51 | 46102 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 7 years ago | 00:00:49 | 39666 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 7 years ago | 00:00:47 | 41522 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 7 years ago | 00:01:11 | 41490 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 7 years ago | 00:01:01 | 31809 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 7 years ago | 00:00:36 | 50504 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...
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