| Mechanism of Red Colour Formation in Photosensitive
and Normal Copper-Ruby Glasses |
R. N. DWIVEDI and P. NATH
Pages : 23-28
DOI : 10.1080/0371750X.1980.10840717 |
| Abstract |
| Absorption spectra relating to the photosensitive copperruby
and normal copper-ruby glasses revealed a strong
absorption band at 560 mp.. The shapes of the absorption
curves for the photosensitive copper-ruby and normal
copper-ruby glasses were almost similar. Electron microscopic
study also revealed the presence of the particles of
colloidal copper in the size range of 20-60 mp. both in
photosensitive as well as in the normal copper-ruby glasses.
The results obtained showed that the red colour formation
in copper-ruby glasses was due to the presence of the
particles of colloidal copper, and not due to the particles of
colloidal Cu20. |
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