incandescent source
101COULEUR — Les radiations lumineuses perçues par notre œil se distinguent non seulement par leurs intensités, mais aussi par des caractéristiques qualitatives, leurs couleurs, qui n’ont d’abord été définies que par des comparaisons souvent grossières: les… …
102Chrysoberyl — General Category Oxide minerals Spinel group Chemical formula Be …
103Timeline of lighting technology — Timeline of lighting technology* Since the dawn of man, about 200,000 years ago, people use the sun as their main source of light. * 70,000 BCE A hollow rock or shell or other natural found objects was filled with moss or a similar material that… …
104Joseph Swan — Infobox Scientist name = Joseph Wilson Swan box width = image size =200px caption =Photograph of Swan, c.1900 birth date = Birth date|1828|10|31 birth place = Bishopwearmouth, England death date = Death date and age|1914|5|27|1828|10|31 death… …
105Fishing light attractor — A Fishing light attractor is a fishing aid which uses lights attached to structure above water or suspended underwater to attract both fish and members of their food chain to specific areas in order to harvest them.Just as fisherman seek… …
106Street light — A street light, lamppost, street lamp, light standard or lamp standard, is a raised source of light on the edge of a road, turned on or lit at a certain time every night. Modern lamps may also have light sensitive photocells to turn them on at… …
107Gas lighting — For other uses, see Gaslight (disambiguation). Gas lighting is production of artificial light from combustion of a gaseous fuel, including hydrogen, methane, carbon monoxide, propane, butane, acetylene, ethylene, or natural gas. Before… …
108Electrodeless lamp — In contrast with all other electrical lamps that use electrical connections through the lamp envelope to transfer power to the lamp, in electrodeless lamps the power needed to generate light is transferred from the outside of the lamp envelope by …
109Electrical ballast — Choke ballast (inductor) used in older lighting. This example is from a tanning bed. Requires a lamp starter (below) and capacitor …
110North American railroad signals — Main article: North American railway signaling Baltimore and Ohio Railroad Color Position Light bracket masts at Magnolia, West Virginia North American railroad signals generally fall into the category of multi headed electrically lit units… …
