inventions By carolinasalazar Jul 21, 1593 Water thermometer Galileo Galilei Jul 21, 1608 telescope Hans Lippershey Jul 21, 1656 Pendulum clock Christiaan Huygens Jul 21, 1675 Pocket Watch Christiaan Huygens Jul 21, 1714 Mercury thermometer Daniel Gabriel Fahrenheit Jul 21, 1786 Steamboat John Fitch Jul 21, 1837 telegraph Samuel Finley Breese Morse Jul 21, 1855 Bunsen gas burner Robert Wilhelm Bunsen Jul 21, 1876 phone Alexander Graham Bell