Naked Science Forum

Non Life Sciences => Chemistry => Topic started by: Nicholas Lee on 23/05/2016 22:37:25

Title: At how many electron-Volts is light absorbed by glass?
Post by: Nicholas Lee on 23/05/2016 22:37:25

So the electron energy levels in glass, the exact number in eV that allows transmission of light through solid matter like glass, and some transparent plasics.
Is this number in eV known to science, like it takes 13 eV to move the hydrogen electron to the next shell level.
So the energy level requirment in electrons in glass would be less than 13 electron voltsvolts when light hits the electron wouldn't it, that's why it does not absorb light, and transmission happens.
Is this correct.
I am grateful for you help, anything helps even a few words. [:D]

Title: Re: Is the electron eV number in glass known to science, yes/no
Post by: chiralSPO on 23/05/2016 23:57:36

Yes.

Most glass begins absorbing light significantly at about 350 nm and below (that's 3.5 eV). Very high purity fused quartz is transparent down to about 200 nm (6.2 eV).

Title: Re: At how many electron-Volts is light absorbed by glass?
Post by: Bored chemist on 24/05/2016 19:15:58

It's more complicated than that. Xrays- with thousands of eV go through stuff.