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Challenge for the Techwhiz / LED experimenter - Field of Beams

Posted by zink 6a (My Page) on
Tue, Jul 26, 05 at 13:26

If we could find out what two wavelengths of light these NSF researchers used, it should be possible to buy the appropriate LEDs, shine them through polarized sunglass lenses, and get a reading on the nutritional quality of our hobby plants.

Any takers?


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