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THERMAL PROPERTIES OF MATTER

Thermal Expansion

Thermal Conductivity

Dipole Radiator (Short Wave Radio)

A 130 MHz short-wave transmitter/receiver is available to show the polarization of electromagnetic waves. The transmitter consists of a vacuum tube oscillator circuit and dipole antenna. The receiver is another dipole antenna with a small light bulb at the center. The light bulb glows brightest when the two antennas are parallel and reasonably close together. The brightness of the bulb decreases with distance between the antennas and as the angle between the antennas approaches 90 degrees. Also available is a polarizing filter consisting of a sheet of poster board with strips of aluminum foil.

Dipole Radiator (Short Wave Radio)