Can ultraviolet light rays pass through glass?

Question

Can ultraviolet light rays pass through glass?

Answer 1

Ultra Violet describes a range of wavelengths

Regular window glass transmits down to about 360 nm wavelengths

Adding Cerium Oxide to the mix pushes that up towards 400.

Quartz or fused silica transmits UV down into the 200 nm range and a bit lower with some absorption. This is UV grade and small impurities have a strong absorption effect.

The issue is that UV photons have a lot of energy and so cause "inelastic" stretching of bonds up to and including ionization.

Answer 2

yes, they can

Answer 3

it really depends on the crystal structure of the glass.  Believe it or not, UV tends to be absorbed by glass, but that doesnt mean all of it is blocked, and that all glass blocks UV.

Answer 4

lol, if they couldn't, black lights wouldn't work. Think about it.

Answer 5

Yes, UV can cross glass, but in small quantities.

Most of the UV is blocked by bare and simple glass.

=\over\ is wrong, black light bulbs uses glass, but only a fraction of the UV escapes and light up some phosporecent light colors.

By other side, germicide fluorescent lamps, used to sterilize tools, have the bulbs made by crystal, not bare glass.  By doing so, almost 90% of the UV produced inside the lamp escape and burn the h**l of all life around, microbes, bacteria, etc.