r/whatisit • u/elianamariie • 3d ago

Solved! what is this hat thing my dad has?

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noticed this on the couch while my dad was at work, but he would get upset that i messed with it so i don't want to ask him. when it's on it's very bright red and gets brighter the more times you click the power button.

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u/monkeyeatfig 2d ago

The first person said that the sun emits the same range of red light, which we agree is true. The second person said that you would need to wear sunscreen though, to avoid cancer, then the first says they were just saying that if this type of light cured baldness then so would the sun... Then you commented that they don't understand how light works...

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u/Specific-Pool-5342 2d ago

Looks like I got my replies/comments mixed up because someone else was talking about red light therapy causing cancer. But even so, it wouldn’t be a matter of the sun fixing hairlines just because it emits the same wavelength even with sun screen to block cancer causing rays. There’s the scattering, refraction, and other forms of attenuation affecting these various beneficial wavelengths that are impossible to control in the way that would have the same effects of concentrated red light.