What do a.m. and p.m. stand for?

visible spectrum

noun, Physics.
the range of wavelengths of electromagnetic radiation that is normally visible, from 380 to 760 nm. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the web for visible spectrum
  • While half of the sun's power lies in the visible spectrum, the other half lies in the infrared spectrum.
  • It would be better, of course, if chlorophyll could absorb light across the whole of the visible spectrum.
  • Multispectral imaging works by scanning objects at a series of specific frequencies both within and beyond the visible spectrum.
  • It radiates hot blue light in the visible spectrum and gives the cloud a bluish tinge.
  • But in some places, it's so frigid that light can't radiate in the visible spectrum, which makes celestial bodies invisible.
  • The problem with the phosphors is that they don't emit evenly across the visible spectrum.
  • Because they fall outside the visible spectrum, the human eye cannot perceive them.
  • Plants that relied at times mostly on the dim red dwarf might need light from all across the visible spectrum.
  • What is more, the spot reflects more red light than blue light, meaning it has a reddish tint in the visible spectrum.
  • The infrared light detected could well be that from heavier elements that have been redshifted off the visible spectrum.
visible spectrum in Medicine

visible spectrum vis·i·ble spectrum (vĭz'ə-bəl)
The part of the electromagnetic spectrum visible to the human eye, extending from extreme red, 760.6 nanometers, to extreme violet, 393.4 nanometers.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source

Word of the Day

Difficulty index for visible spectrum

Few English speakers likely know this word

Word Value for visible

Scrabble Words With Friends

Nearby words for visible spectrum