The experiment addresses questions like "Does color inhere in the world, or in the eye?"... Read more about Land's Retinex Theory Experiment

See how objects of different temperature emit different intensities of infra-red radiation.

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10 cm microwaves are used for the demonstration of travelling and standing waves, reflection, interference, refraction, diffraction, absorption, polarization, tunneling, and waveguides.

... Read more about Microwave Properties

What it shows:

The transmission and detection of radio frequency electromagnetic radiation by use of LC oscillator circuits recreates the discovery by Hertz of a method to generate and detect electromagnetic waves.

How it works:

The core of the apparatus (figure 1) is a series LRC circuit (the R provided by the circuit resistance). The inductor L is a 1m diameter loop made of 1 inch copper tubing which also serves as the radiating antenna. A transformer ¹ supplies 15kV to charge up the capacitor ² until...

An empty aluminum soft drink can, placed inside a coil of wire, is made to implode when... Read more about Can Crusher - Magnetic Implosion

What it shows:

A changing magnetic flux induces a current in a metal ring; the magnetic field due to this current opposes the primary field, repelling the ring and flinging it into the air. That's the simple "hand waving" explanation for the beginner student—a more accurate explanation follows.

How it really works:

The jumping ring is a vivid and popular demonstration of electromagnetic induction and is used to illustrate Faraday's and Lenz's laws. A conducting ring, placed over the ferromagnetic core of a solenoid, may levitate or...

A bar magnet or other source of magnetic field induces a current in a coil of wire when the magnetic flux through the coil changes.

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What it shows: 

A collimated beam of Cathode rays can be deflected by a magnetic field.

What it shows:

A 2000 μF capacitor is discharged by a carbon steel wire. The surge of current literally vaporizes the wire and it explodes into a spectacular arc of sparks that span the front of the lecture hall.

How it works:

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What it shows:

A lecturer's faith in the principle that an electric field cannot exist inside a charged conductor is put to the test using a Faraday cage that is large enough to sit in.

How it works:

The lecturer (or some volunteer) climbs the three steps and sits upon a plain wooden chair. Their assistant pulls the mesh door closed and fastens it. A Van de Graaff, whose dome is in contact with the cage, begins to charge itself and the cage up to a high voltage. The person inside is oblivious to the large amount of charge now...

How does shielding work? Is it a two-way street and work both ways? Can electric fields not penetrate metals? What's going on? This sequence of demonstrations addresses these questions.... Read more about Electrostatic Shielding

What it shows:

A Van de Graaff generator will apply a charge to its dome and anything else in contact with the dome. Should that object be a person, they obtain a net surplus of charge (be it positive or negative). It is especially noticeable with hair, as each individual strand is repelled from every other and from the scalp.

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What it shows:

The electroscope, or electrometer, is an instrument that measures electric charge or voltage by means of repulsive electrostatic force.

What it shows:

In explaining the electron orbits in the Bohr atom, de Broglie's principle of particle wave duality allows you to treat the electrons as waves of wavelength nλ = 2πr where r is the radius of the orbit. Then the only...