Welshmen, Philip Vaughan invents ball bearings. A British inventor, Henry Maudslay invents the first metal or precision lathe. Aloys Senefelder invents lithography. Louis Robert invents the Fourdrinier Machine for sheet paper making. FREE Newsletter.
Sign Up Now! Important disclaimer information about this About site. Depression Self-Test Vitamins for Depression? Most Popular Articles. Latest Articles. See Online Courses. All Topics Email Article. All rights reserved. Jethro Tull invents the seed drill. Bartolomeo Cristofori invents the piano.
Englishmen, John Shore invents the tuning fork. Thomas Newcomen patents the atmospheric steam engine. Edmond Halley invents the diving bell. French C. Gabriel Fahrenheit invents the first mercury thermometer. Tired of constantly having to put on and remove his glasses, Franklyn cut two pairs of glasses in half and put half of each lens in a single frame. This one man submarine was propelled by a hand crank propeller.
This machine separates cotton fiber from the seeds revolutionizing the cotton industry and making cotton the major cash crop in the South. After receiving a contract to manufacture 10, muskets for the U. The late historian of science John North wrote in his book Cosmos: An Illustrated History of Astronomy and Cosmology that it is an incorrectly drawn triquetrum, but other illustrations from the same observatory depict the triquetrum as being much larger.
It could be an unnamed instrument for measuring vertical angles, but that would require it to be bolted into a horizontal position. There seems to be an instrument for that purpose on the table on the right hand side in the picture. My sense is that the instrument the man in the upper left of the miniature is using is a sextant, possibly drawn without a frame. Skip to main content. Login Register.
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