Re: Does anyone collect antique light bulbs ?
At school (a few, 45 odd, years ago) the physics teacher put a magnet next to a carbon filament lamp and we all saw it (the filament) shaking side to side. I must thank the teacher (Tony Cornell, I remember him with great fondness) for being brilliant at getting all of the class to enjoy physics, even the girls, which was rare in those days.
A bit OT, he had a splendid way of simplifying the mathematical bit of physics, "If it makes it bigger put it on the top, smaller on the bottom (of a divide line) and multiply by some constant or other which you can find in a book".
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