http://www.healthygreenlivingtoday.com Go Green Energy Healthy Natural Living Thu, 26 Aug 2010 17:54:52 +0000 en hourly 1 http://wordpress.org/?v=3.0.1 http://www.healthygreenlivingtoday.com/photon-energy-og-green-lightwaves.html http://www.healthygreenlivingtoday.com/photon-energy-og-green-lightwaves.html#comments Sat, 12 Dec 2009 08:15:12 +0000 http://www.healthygreenlivingtoday.com/photon-energy-og-green-lightwaves.html A cheap spectrophotometer can be made using a light-emitting diode as the source of the light. Assume that you build one of these spectrometers using an LED that gives off green light with a wavelength of 520 nm. What is the energy of a photon of this green light?

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