A phonograph, in its later forms also called a gramophone (as a trademark since 1887, as a generic name in the UK since 1910) or since the 1940s called a record player, is a device for the mechanical and analogue recording and reproduction of sound.
invented by Sir William Crookes
The Crookes radiometer (also known as a light mill) consists of an airtight…
invented by Robert Bunsen
Chemical vapor deposition (CVD) is a vacuum deposition method used to produce…
invented by William Reid Clanny
A safety lamp is any of several types of lamp that provides illumination in…
invented by Alexander Parkes
Celluloids are a class of materials produced by mixing nitrocellulose and…
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