How to make a 'perfect' solar absorber
Boston MA (SPX) Oct 01, 2014 - The key to creating a material that would be ideal for converting solar energy to heat is tuning the material's spectrum of absorption just right: It should absorb virtually all wavelengths of light that reach Earth's surface from the sun - but not much of the rest of the spectrum, since that would increase the energy that is reradiated by the material, and thus lost to the conversion process. ... more
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