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Light, although still photons only covers a limited spectrum of the electro-magnetic frequencies from ultra violet through visible to infra red. So light is not the same as radio waves which have a much lower frequency.
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I/we did draft a patent proposal, but I'm not sure that we carried it through.
Quote from: techmind on 15/09/2011 21:06:57I/we did draft a patent proposal, but I'm not sure that we carried it through. Schtum! Schtum! Not the "P" word. Graham will have one of his turns