= Сообщение: 1232 из 12549 ====================================== ENET.SYSOP = От : Kees van Eeten 2:280/5003.4 26 Oct 14 15:17:00 Кому : BjЎrn Felten 26 Oct 14 15:17:00 Тема : GfdNet FGHI : area://ENET.SYSOP?msgid=2:280/5003.4+544d0524 На : area://ENET.SYSOP?msgid=2:203/2+544cf730 = Кодировка сообщения определена как: LATIN-1 ================================ Ответ: area://ENET.SYSOP?msgid=2:203/2+544d08e2 ============================================================================== Hello BjЎrn!
26 Oct 14 14:29, you wrote to me:
BF> Yes, I saw that. I still don't understand how the wave length would BF> matter. Light travels equally fast in glass, whether it's infrared or BF> ultraviolet. The only reason must be an artificial limitation.
You would probably be right it it was a streight bar of glas. But it clearly is not, as it is bent all over its leght. So it travels by reflecting on the boundaries, where there is a change. The breaking index is dependent of that change. There will be a loss of light were the bouncing to an fro will not be optimal. With multimode fiber, the reflexion is optimize for more freqiency ranges, I think it is done by creating a coaxial structure of different types of glass.
I bet Michiel is in a far better position to explain all this.
Kees
--- FPD v2.9.040207 GoldED+/LNX 1.1.5 * Origin: As for me, all I know is that, I know nothing. (2:280/5003.4)
