Don't know much about the science of it, but I know that the different types
of laser protective glasses that I've been issued in the military are not
dark at all. They are simple plastic safety glasses with a very light
colored, slightly reflective coating. I assume it employs some sort of
polarizing or refractory principle to disrupt the beam. We never carry
them.

"Rich S." wrote in message
...
"Richard Lamb" wrote in message
...

Amazing how bright that 1/20000 second can be, isn't it.

My learned brother and I were discussing those hoods one day and I axed
him
if that is the technology used in the military to prevent eye damage from
laser attacks. IIRC, he told me that a laser could burn out your optic
nerve
before the glass wen t dark.

That laser light must be a lot faster than reg'lar light, huh?

Rich S.