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Videos tagged with physics (199)

Laser Diffraction and Interference

Laser Diffraction and Interference

MIT Department of Physics Technical Services Group

Added 6 years ago | 00:02:25 | 38170 views

A laser is directed at an adjustable single slit and then a pinhole and the resulting diffraction patterns can be seen on a screen. A laser directed at two slits spaced closely next to each other creates an interference pattern within...

Faraday's Cage

Faraday's Cage

MIT Department of Physics Technical Services Group

Added over 6 years ago | 00:01:23 | 63208 views

In the electric field of a Van de Graaff generator, an unprotected Ben Franklin feels electrostatic forces. However, when a metal cage surrounds him, he is completely shielded against any electricity or electrostatic force. This is due...

Adjustable Capacitor with Dielectric

Adjustable Capacitor with Dielectric

MIT Department of Physics Technical Services Group

Added over 6 years ago | 00:02:05 | 36299 views

First, an adjustable parallel-plate capacitor is held at a constant voltage. As the separation between the plates is widened, the electrometer shows charge (or current) flowing off of the plates, while the electroscope shows no change i...

Balloons in Liquid Nitrogen

Balloons in Liquid Nitrogen

MIT Department of Physics Technical Services Group

Added over 6 years ago | 00:01:18 | 46439 views

This demonstrates the ideal gas law (PV=nRT) which states that a drop in temperature with fixed mass and external pressure will result in a smaller volume, and vice versa.

Dissectible Capacitor

Dissectible Capacitor

MIT Department of Physics Technical Services Group

Added over 6 years ago | 00:02:54 | 45038 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 ...

Temperature Effect on Resistance

Temperature Effect on Resistance

MIT Department of Physics Technical Services Group

Added over 6 years ago | 00:01:10 | 43960 views

A light bulb is connected in series with a coil of very fine copper wire and a DC power supply. The voltage is adjusted so that the bulb glows dimly. When the coil is immersed in liquid nitrogen the resistance of the wire decreases causi...

Inducing Dipoles with a Van de Graaff Generator

Inducing Dipoles with a Van de Graa...

MIT Department of Physics Technical Services Group

Added over 6 years ago | 00:02:51 | 46582 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...

Confetti and the Van de Graaff Generator

Confetti and the Van de Graaff Gene...

MIT Department of Physics Technical Services Group

Added over 6 years ago | 00:00:55 | 42472 views

Paper confetti is placed atop a Van de Graaff generator and flies off when the grounding rod is removed. When turned on, a Van de Graaff generator builds up lots of negative charge on its large metal sphere. A grounding rod is used t...

Rubber and Glass Rods with Tinsel and Balloon

Rubber and Glass Rods with Tinsel a...

MIT Department of Physics Technical Services Group

Added over 6 years ago | 00:02:02 | 39460 views

A plexiglass rod rubbed with fur picks up a positive electric charge, while a rubber rod rubbed with fur picks up a negative electric charge. When either rod is brought in contact with hanging tinsel, the tinsel becomes charged and flare...

Potential Energy to Kinetic Energy

Potential Energy to Kinetic Energy

MIT Department of Physics Technical Services Group

Added over 6 years ago | 00:01:11 | 31326 views

Two identical metal balls are dropped from the same height using an electromagnetic release. One ball is dropped freely, while the other hangs from a string, acting as a simple pendulum. Using two photogates, we see that the vertical v...

8.012 Fall 2008: Lecture 13

8.012 Fall 2008: Lecture 13

8.012

Added over 6 years ago | 01:25:00 | 16379 views

Lecture 13 (23 October 2008): Rotational Motion & definition of angular momentum & torque, orbital motion & Kepler's laws

8.012 Fall 2008: Lecture 14

8.012 Fall 2008: Lecture 14

8.012

Added over 6 years ago | 01:15:00 | 17892 views

Lecture 14 (28 October 2008): Moment of Inertia, Rotational Energy (plus a fire alarm!). There seem to be some long pauses in this video.