The Electron as a Particle: Crookes and Cathode Ray Tubes

Cathode Rays and the Crookes Tube The Crookes tube is a cathode ray tube.
Cathode Rays are Beams of Electrons The effect of a magnetic field on a cathode ray shows it is a beam of rapidly moving electrons.
Components of a Computer Monitor In a computer monitor, cathode rays strike a phosphor-coated surface causing a picture to be generated.
Components of an Oscilloscope Tube In this oscilloscope tube, cathode rays are deflected by electric fields.
Cathode Ray Tube with Pinwheel Charged particles strike the phosphor-coated blades of a pinwheel, causing the phosphor to glow and the wheel to rotate, demonstrating that charged particles have mass.

The Crookes tube and various cathode ray tubes demonstrate the electron as particle.

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