Demonstration

Cathode Ray Tubes

An electron beam in a catahode ray tube can be deflected with a magnetic or electric field. An electron beam can cause a pinwheel in a CRT to turn. When an object is placed in the path of an electron beam, the rays cast a shadow.
Deflected Electron Beam

Conductivity of Electrolytes Demonstration

When a current is applied to an aqeous solution, strong electrolyte solutions light up a light bulb, weak electrolyte solutions dimly light a bulb, and nonelectrolyte solutions do not light a bulb.
Comparing stong, weak, and non-electrolyte solutions: Conductivity

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