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incident light - the amount of light falling on an object.

infrared - the region of energy in the electromagnetic spectrum from about 800 to 106 nm in wavelength; this is the region that our skin perceives as "heat." (more)

  ©Copyright 2003 Carnegie Mellon University
This material is based upon work supported by the National Science Foundation under Grant Number 9653194. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.