Comments for Actinica http://www.actinica.com Actinica .... at the intersection of optics and electronics Wed, 15 Jul 2009 15:09:38 +0000 hourly 1 http://wordpress.org/?v=3.4.2 Comment on Vision response vs. Planck’s Black Body Curve by Michael Beach http://www.actinica.com/2009/03/vision-response-vs-plancks-black-body-curve/comment-page-1/#comment-19 Michael Beach Wed, 15 Jul 2009 15:09:38 +0000 http://www.tinyelves.us/wordpress/?p=133#comment-19 We thought of the subject matter during the course of our work in optics and photography. The units of optical power used by physics professionals differs by the units used in the field of photography and illumination. Since we had difficulty finding articles that could convert from basic physics units to units of 'candelas' or the 'lumen' and the Watt, we started some work on this type of article. As LED lighting starts to be compared to incandescent lamps, there will be much confusion, without these conversions, since the old incandescent lamps are rated by their 'wattage' which is just INPUT power NOT light efficacy. AND our eyes have different sensitivity than cameras do (see some of our other articles). We thought of the subject matter during the course of our work in optics and photography. The units of optical power used by physics professionals differs by the units used in the field of photography and illumination. Since we had difficulty finding articles that could convert from basic physics units to units of ‘candelas’ or the ‘lumen’ and the Watt, we started some work on this type of article. As LED lighting starts to be compared to incandescent lamps, there will be much confusion, without these conversions, since the old incandescent lamps are rated by their ‘wattage’ which is just INPUT power NOT light efficacy.

AND our eyes have different sensitivity than cameras do (see some of our other articles).

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