Scott McNay wrote: Specifically, I don't understand how light is considered to be related to moving electrons. Can you explain, John (or someone else who has some knowledge of how these things work)? Just re-read your comments and realized you wanted more information of another type so let's try and cover it. In this case it reads more like a description of a TV set where electrons are used to project images. Probably other list members understand how this works, but it's worth explaining. Electrons in this case are emitted by a hot wire element (the electron gun), and accelerate toward the screen surface. On the way they are focused into a beam and fired at individual light sensitive pixels on the screen to produce images one dot at a time. Synchronized timing and picture information are used to control location and colour of each dot. Beyond this, the effect is the reverse of what was explained before. Electrons strike pixels on the screen surface, releasing energy which illuminates them briefly. When that occurs at high speed over multiple dots you see the illusion of live images (LCD/flat screens use another method). The electrons that are spent in this way are collected by a high voltage charge on the back of the glass tube (can be 25000V plus in colour tubes) and returned to the system so that there is always an attractive force to draw the electrons to the screen as needed. -- Regards, John Durham <http://modecideas.com/contact.html?sig> ICQ number 497166248 Fax/Phone 64 4 5286786 Award winning web site at http://modecideas.com?sig Terms of trade at http://modecideas.com/lvl22.html?sig PC-HELPERS list subscribe/unsub at http://modecideas.com/discuss.htm?sig Good advice is like good paint- it only works if applied. -- -------list-services-below----------- Regards, John Durham (list moderator) <http://modecideas.com/contact.html?sig> Freelists login at http://www.freelists.org/cgi-bin/lsg2.cgi List archives at http://www.freelists.org/archives/pchelpers PC-HELPERS list subscribe/unsub at http://modecideas.com/discuss.htm?sig Latest news live feeds at http://modecideas.com/indexhomenews.htm?sig Good advice is like good paint- it only works if applied.