Tuesday, 22 April 2025

Cathode Ray Tube


 Taking a good look at the insides of an oscilloscope to discover how a Cathode Ray Tube works. Once commonplace, now students don't know what it is, and the technology about how it works, and its history in the discovery of particles.

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Oil and Water

 Separating oil and water with a separating funnel? Easy.  First I asked students to separate mixtures— They came up with tweezers for salt ...