Wayde,
My UV lamps do not go that high (frequency) in the spectrum, and I think probably yours
also, you would really hurt yourself, being exposed to wavelengths shorter than this. What I
said is that acrylics go flat from 380 nm to 700 nm. They will transmit in a shorter
wavelength than 380 nm with a certain loss of course. Comparing the curves of normal glass
(not quartz), acrylics have a better transmission for UV.
Jacques
Harper, Charles A.: Handbook of Plastics and Elastomers, McGraw-hill
Wayde Allen wrote:
> On Wed, 8 Dec 1999, Jacques Augustowski wrote:
>
> > Jacques Augustowski wrote:
> >>
> >> Well, if you are careful not to scratch use acrylic or Plexiglas. They
> >> transmit UV better than glass. Even if you have some minor scratches
> >> polishing will take care.
>
> <snip and join postings>
>
> > Acrylics starts transmitting at about 380 nm and goes on linearly up to 700 nm. If you
> > want I give give the reference.
> > Jacques
>
> UV light would have a wavelength LESS than 400 nm. Infrared would be
> anything GREATER than 700 nm (700 nm is a very dark red). That means you
> have effectively refuted your own claim about the UV transmissivity of
> Plexiglas, and shown that Plexiglas blocks rather than transmits
> UV light.
>
>
>
> - Wayde
> (wallen@boulder.nist.gov)
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