Infrared |
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Infrared is EM radiation of longer wavelength (lower photon energy) than red light. A remarkable image of the central bulge of our edge-on galaxy can be made in the infrared because the longer wavelengths penetrate the dust and gas clouds better than visible light.  http://zebu.uoregon.edu/~soper/ImMilkyWay/
Landscape photographs in the near infrared render trees as white (left) and thermal radiation from bodies as cool as 300 K can be imaged with cooled CCD detectors (right). |
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