All Questions
4
questions
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How much UVA and UVB is blocked by shadow or being indoors?
I could not find a clear answer online so I though to try this forum instead.
I did find answers on how different types of glass can block different degrees of UVA and UVB. But I was wondering, if I ...
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7
votes
4
answers
514
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Can you shake a charged object fast enough to create light?
Electromagnetic radiation (a photon) is generated by an oscillating charged particle. Therefore, is it possible to vibrate an object at say 585 THz and create a green light source?
Alternatively: what'...
1
vote
0
answers
60
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Calculate irradiation from a LED lamp
I am working with cell culture and I want to irradiate a 96-well plate with a single color led lamp (let's say the peak is at 450nm). It's just a test, so a rough estimation would do.
I've been ...
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75
votes
13
answers
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If visible light has more energy than microwaves, why isn't visible light dangerous?
Light waves are a type of electromagnetic wave and they fall between 400-700 nm long. Microwaves are less energetic but seem to be more dangerous than visible light. Is visible light dangerous at all ...
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