Celluloids are a class of materials produced by mixing nitrocellulose and camphor, often with added dyes and other agents. Once much more common for its use as photographic film before the advent of safer methods, celluloid’s common contemporary uses are table tennis balls, musical instruments, combs, office equipment, and guitar picks.
invented by Frederick Ransome
A rotary kiln is a pyroprocessing device used to raise materials to a high…
invented by
An internal combustion engine (ICE or IC engine) is a heat engine in which the…
invented by Nicolas appert
Canning is a method of food preservation in which food is processed and sealed…
invented by William Robert Grove
A fuel cell is an electrochemical cell that converts the chemical energy of a…
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