The Red Brick Times

The National Lighting Product Information Program (NLPIP) has an abstract by the Rensselaer Polytechnic Institute's Lighting Reasearch Center laying out the case for and against the claims made for full-spectrum lighting as a health benefit and curative for the winter blahs. Since full-spectrum light fixtures and bulbs are marketed at many times the cost of "normal" lighting products, the findings, accompanied by spectrum charts and explanations, do not seem to justify the high cost. See The NLPIP posting of "Full Spectrum Lighting Sources". I found it interesting that the actual frequency spectra for florescent fixtures marketed as "full spectrum" matched those for normal florescent tubes almost exactly. Another datum is that "full-spectrum" fixtures actually emit less visible light. It is noted that a person who spends all day under full-spectrum lighting (as in an office), gets the same UV as experienced in a couple of minutes outdoors. This is not enough UV to result in any added vitamin D. So it's bright, white, cheap florescent tubes, me boys. I'll spend the difference on the electricity.
Posted 12:22 AM by Andy (0) comments

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