telescope is an optical instrument using lenses, curved mirrors, or a combination of both to observe distant objects, or various devices used to observe distant objects by their emission, absorption, or reflection of electromagnetic radiation. The first known practical telescopes were refracting telescopes invented in the Netherlands at the beginning of the 17th century, by using glass lenses. They were used for both terrestrial applications and astronomy.
invented by John Roebuck
The lead chamber process was an industrial method used to produce sulfuric acid…
invented by Bartolomeo Cristofori
The piano is an acoustic, keyboard and stringed musical instrument in which the…
invented by Daniel Gabriel Fahrenheit
A thermometer is a device that measures temperature or a temperature gradient…
invented by Otto von guericke
An electrostatic generator, or electrostatic machine, is an electromechanical…
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