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Perspex Composition.
In Response To: Photo setup....lots of pics...! ()

Bet you did not know THIS!!! LOL

Composition of POLYMETHYL METHACRALATE (LUCITE, PERSPEX, PLEXIGLASS):
Density (g/cm3) = 1.19000E+00
Mean Excitation Energy (eV) = 74.000000

COMPOSITION:

Atomic number Fraction by weight
1 0.080538
6 0.599848
8 0.319614

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