An arc lamp or arc light is a lamp that produces light by an electric arc (also called a voltaic arc).The carbon arc light, which consists of an arc between carbon electrodes in air, invented by Humphry Davy in the first decade of the 1800s, was the first practical electric light.
invented by Francois Coignet
Reinforced concrete (RC), also called reinforced cement concrete (RCC), is a…
invented by Frédéric Swarts
Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) are fully or…
invented by Nicolas appert
Canning is a method of food preservation in which food is processed and sealed…
invented by Hanaoka Seishu
General anaesthetics (or anesthetics, see spelling differences) are often…
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