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you should put a lightbulb in a microwave. turn out the lights, then start.
it will scan from green to violet and back and forth when the radiation hits the filiment on the inside of the bulb.
after about 10 secs later, the bulb explodes. i think. i've always stopped the microwave after like 2 scans, because i was afraid of a big explosion of glass and filiment.

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