visible light
21Light Data Transmission — attempts to transfer information using visible light.The Visible Light Communications Consortium are proposing using light emitting diodes to turn ordinary household fixtures such as light bulbs, televisions, or even flashlights into data… …
22light microscope — n an ordinary microscope that uses light as distinguished from an electron microscope light microscopy n, pl pies * * * a microscope in which the specimen is viewed under visible light …
23autokinetic visible light phenomenon — the apparent spontaneous movement of a pin point source of light as seen by certain susceptible persons when they gaze steadily at it in a completely blacked out room …
24light — light1 lightful, adj. lightfully, adv. /luyt/, n., adj., lighter, lightest, v., lighted or lit, lighting. n. 1. something that makes things visible or affords illumination: All colors depend on light. 2. Physics …
25Light — For other uses, see Light (disambiguation). Visible light redirects here. For other uses, see Visible light (disambiguation) …
26Visible spectrum — White light is dispersed by a prism into the colors of the optical spectrum. The visible spectrum is the portion of the electromagnetic spectrum that is visible to (can be detected by) the human eye …
27Light-emitting diode — LED redirects here. For other uses, see LED (disambiguation). Light emitting diode Red, pure green and blue LEDs of the 5mm diffused type Type Passive, optoelectronic Working principle Electr …
28Light pollution — This article is about light pollution in the visible spectrum. For information on pollution in the radio spectrum, see radio spectrum pollution. This time exposure photo of New York City at night shows skyglow, one form of light pollution …
29Light beam — A light beam or beam of light is a narrow projection of light energy radiating from a source into a beam. Sunlight is a natural example of a light beam when filtered through various mediums (clouds, foliage, windows, etc). To artificially produce …
30light-emitting diode — /luyt i mit ing/. See LED. [1965 70] * * * ▪ electronics in electronics, a semiconductor device that emits infrared or visible light when charged with an electric current. Visible LEDs are used in many electronic devices as indicator lamps …
