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visible radiation

noun

  1. electromagnetic radiation that causes the sensation of sight; light. It has wavelengths between about 380 and 780 nanometres
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Example Sentences

Because a black hole is a pure gravitational field left behind when a massive star collapses to a point, the collision involved no matter and produced no visible radiation.

This hypothetical signal is distinct from a much longer-wavelength one from even earlier on, which might appear in the universe’s oldest visible radiation: the cosmic microwave background.

This hypothetical signal is distinct from a much longer-wavelength one from even earlier on, which might appear in the Universe’s oldest visible radiation: the cosmic microwave background.

From Nature

Scientists had predicted black holes formed during the universe's earliest days, but because of gas and dust absorbing all visible radiation save for "the highest-energy X-rays," we lacked observational evidence—until now.

From Time

This is because it is surrounded by a huge envelope of dust that absorbs almost all its visible radiation and re-emits it as infrared light.

From US News

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