An electrostatic generator, or electrostatic machine, is an electromechanical generator that produces static electricity, or electricity at high voltage and low continuous current.
invented by James Hargreaves
The spinning jenny is a multi-spindle spinning frame, and was one of the key…
invented by Daniel Gabriel Fahrenheit
A thermometer is a device that measures temperature or a temperature gradient…
invented by Bartolomeo Cristofori
The piano is an acoustic, keyboard and stringed musical instrument in which the…
invented by Evangelista Torricelli
A barometer is a scientific instrument that is used to measure air pressure in…
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