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Videos tagged with induction (13)

Lenz's Law with Copper Pipe

Lenz's Law with Copper Pipe

MIT Department of Physics Technical Services Group

Added almost 3 years ago | 00:01:38 | 6555 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 ...

Paramagnetism Of Liquid Oxygen

Paramagnetism Of Liquid Oxygen

MIT Department of Physics Technical Services Group

Added 3 years ago | 00:02:22 | 9188 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....

Explorations in Language Learnability Using Probabilistic Grammars and Child"directed Speech

Explorations in Language Learnabili...

MIT World — special events and lectures

Added 3 years ago | 00:43:20 | 2440 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...

Ring Falling in a Magnetic Field

Ring Falling in a Magnetic Field

MIT Department of Physics Technical Services Group

Added 3 years ago | 00:03:27 | 10384 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...

3-Phase AC Induction Motor Control Demo

3-Phase AC Induction Motor Control ...

scolton

Added over 5 years ago | 00:00:44 | 21131 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 ...

Dissectible Capacitor

Dissectible Capacitor

MIT Department of Physics Technical Services Group

Added almost 6 years ago | 00:02:54 | 43947 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 ...

Inducing Dipoles with a Van de Graaff Generator

Inducing Dipoles with a Van de Graa...

MIT Department of Physics Technical Services Group

Added almost 6 years ago | 00:02:51 | 45213 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...

MIT Physics Demo -- Forces on a Current-Carrying Wire

MIT Physics Demo -- Forces on a Cur...

MIT Department of Physics Technical Services Group

Added over 6 years ago | 00:00:49 | 38792 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...

MIT Physics Demo -- Levitating Magnet

MIT Physics Demo -- Levitating Magnet

MIT Department of Physics Technical Services Group

Added over 6 years ago | 00:00:47 | 40891 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 ...

MIT Physics Demo -- Pendulum and Magnet

MIT Physics Demo -- Pendulum and Ma...

MIT Department of Physics Technical Services Group

Added over 6 years ago | 00:01:11 | 40685 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...

MIT Physics Demo -- Inductor Radio

MIT Physics Demo -- Inductor Radio

MIT Department of Physics Technical Services Group

Added over 6 years ago | 00:01:01 | 31050 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...

MIT Physics Demo -- Telegraph Transmitter

MIT Physics Demo -- Telegraph Trans...

MIT Department of Physics Technical Services Group

Added over 6 years ago | 00:00:36 | 49759 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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