- #1
kickstar
- 7
- 0
Hi everybody!
Just 2 important notes: I don't study physics and so I'm not sure if this question belongs here (but I don't know where should I put it..); second I'm not english native, so ask me if I did not explain somthing enough.
My electronic professor told once in my class, that you don't have to buy expensive sunglasses to be protected from UV rays. He said that UV rays have a wavelength under 400nm and therefore they can't penetrate in objects with higher thickness. Unfortunately I wasn't able to find anything online about wavelength and penetration capability.
Was him right? If so could you explain me how this thing works?
Thank you so much, bye
Just 2 important notes: I don't study physics and so I'm not sure if this question belongs here (but I don't know where should I put it..); second I'm not english native, so ask me if I did not explain somthing enough.
My electronic professor told once in my class, that you don't have to buy expensive sunglasses to be protected from UV rays. He said that UV rays have a wavelength under 400nm and therefore they can't penetrate in objects with higher thickness. Unfortunately I wasn't able to find anything online about wavelength and penetration capability.
Was him right? If so could you explain me how this thing works?
Thank you so much, bye