"tube coolers"

Standard resistance rheostat.

Eddy current for demonstrating Lenz's law.

The Lenz's Law Kit investigates how much force an induced magnetic field can create.

The Air-Cooled Laboratory Rheostat is the classic lab solution for controlling voltages and currents.

The Eddy Current Experiment demonstrates Lenz's Law.

Glows with Characteristic Brilliance!

Small electrolysis apparatus with beaker included.

The 3D Magnet Viewer displays clear views of magnetic fields.

This demo features a cathode beam to explain the electromagnetic nature of electrons.

Students measure the voltages generated by a series of different pairs of half cells using the Electrolytic Bridge.