A zinc–carbon battery is a dry cell primary battery that provides direct electric current from the electrochemical reaction between zinc and manganese dioxide (MnO2).
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invented by Gustave Trouve
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A planer is a type of metalworking machine tool that uses linear relative…
Safety lamp
invented by William Reid Clanny
A safety lamp is any of several types of lamp that provides illumination in…
Rotary kiln
invented by Frederick Ransome
A rotary kiln is a pyroprocessing device used to raise materials to a high…
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