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come study physics (quokk.au)
submitted 7 months ago by to c/science_memes@mander.xyz
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come study physics
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[–] 21 points 7 months ago (1 child)

The last picture shows a mercury arc valve, which behaves like a diode, for anyone curious.

https://en.wikipedia.org/wiki/Mercury-arc_valve?wprov=sfla1

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