| I believe a lot of CRT-based projection TVs use an oil of some kind bathing the front of the tube to keep it cool. The reason is because the oil used has a diffraction characteristic that is extremely close to that of the glass used in the tube, so you don't have light scattering at the glass/oil interface, like you would with water.
__________________ Avatar and sig graphic by Pitch. Subscribers!
Ask about a custom graphic or avatar today! Later, Gizmo     |