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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Electrical Wire
From: Ken James
Date: 2004 Mar 25, 12:31 -0600
From: Ken James
Date: 2004 Mar 25, 12:31 -0600
Probably not in the tiny size found in sextants, yet. Oh yes, I am sure there are. > . As of last month there is > a new technology producing "real" white LED's that run at under 3v, so real > white LED lighting for sextants should be possible later this year if they > ship small ones. I assume you mean the color combination technique? That has actually been around for quite some time, but it requires different voltages for a number of leds in on pack. The 'phospher down convert' method that you mention (which has now been around for almost eight years...how time flies...it still seems brand new to me!) can have a CIE rendering of up to 85 now, better than all but the very best fluorescent 'warm white' bulbs. In any case, I would NOT use white in a sextant bulb, much better to use yellow or amber. (some prefer red for night work).There are some surface mount leds smaller than a grain of sand. Not sure what the app for them is!-Ken
