Physics, 26.10.2019 05:43 walmartislife
4of 5 constants there are two categories of ultraviolet light. ultraviolet a (uva) has a wavelength ranging from 320 nm to 400 nm. it is necessary for the production of vitamin d. uvb, with a wavelength in vacuum between 280 nm and 320 nm, is more dangerous because it is much more likely to cause skin cancer. find the frequency ranges of uva.
Answers: 3
Physics, 22.06.2019 12:30
Which levels of government establish and implement educational requirements for minors
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4of 5 constants there are two categories of ultraviolet light. ultraviolet a (uva) has a wavelength...
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