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 Elisha Otis
An elevator (North American English)[1] or lift (Commonwealth English)[2] is a…
invented by Alexander Parkes
Celluloids are a class of materials produced by mixing nitrocellulose and…
invented by John Walker
A match is a tool for starting a fire. Typically, matches are made of small…
invented by Léon Bouly
Cinematograph or Kinematograph is an early term for several types of motion…
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