Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
(General Physics) electromagnetic radiation that causes the sensation of sight; light. It has wavelengths between about 380 and 780 nanometres
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Switch to new thesaurus
|Noun||1.||visible radiation - (physics) electromagnetic radiation that can produce a visual sensation; "the light was filtered through a soft glass window"|
natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"
light beam, ray, ray of light, beam of light, shaft of light, irradiation, beam, shaft - a column of light (as from a beacon)
corona - one or more circles of light seen around a luminous object
counterglow, gegenschein - a faint spot of light in the night sky that appears directly opposite the position of the sun; a reflection of sunlight by micrometeoric material in space
daylight - light during the daytime
electromagnetic spectrum - the entire frequency range of electromagnetic waves
firelight - the light of a fire (especially in a fireplace)
fluorescence - light emitted during absorption of radiation of some other (invisible) wavelength
friar's lantern, ignis fatuus, jack-o'-lantern, will-o'-the-wisp - a pale light sometimes seen at night over marshy ground
gaslight - light yielded by the combustion of illuminating gas
glowing, radiance, glow - the amount of electromagnetic radiation leaving or arriving at a point on a surface
glow - a steady even light without flames
half-light - a greyish light (as at dawn or dusk or in dim interiors)
lamplight - light from a lamp
luminescence - light not due to incandescence; occurs at low temperatures
shooting star, meteor - a streak of light in the sky at night that results when a meteoroid hits the earth's atmosphere and air friction causes the meteoroid to melt or vaporize or explode
moonlight, moonshine, Moon - the light of the Moon; "moonlight is the smuggler's enemy"; "the Moon was bright enough to read by"
starlight - the light of the stars
scintillation - (physics) a flash of light that is produced in a phosphor when it absorbs a photon or ionizing particle
streamer - light that streams; "streamers of flames"
torchlight - light from a torch or torches
twilight - the diffused light from the sky when the sun is below the horizon but its rays are refracted by the atmosphere of the earth
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.