Suntan Sally put on her bathing suit and relaxed in a room that was pitch black. At the same time Tanline Timmy put on his bathing suit and relaxed in a room filled with bright light. A couple hours later Suntan Sally had a bad sunburn while Tanline Timmy wasn't? How is this possible?
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1 answer

the infrared portion of the solar spectrum is responsible for sunburn
infrared is not part of the spectrum visible to humans
the pitch black room must have had infrared radiation sources
Timmy's bright lights emitted very little infrared 👍
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answered by scott
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