The lead chamber process was an industrial method used to produce sulfuric acid in large quantities. It has been largely supplanted by the contact process.
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Slide Rule
invented by William Oughtred
The slide rule is a mechanical analog computer. The slide rule is used…
Vacuum pump
invented by Otto von guericke
A vacuum pump is a device that draws gas molecules from a sealed volume in…
Friction machine
invented by Otto von guericke
An electrostatic generator, or electrostatic machine, is an electromechanical…
Telescope
invented by Hans Lippershey
telescope is an optical instrument using lenses, curved mirrors, or a…
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