Charles Francis Richter
(April 26, 1900 - September 30, 1985)
American seismologist, born in Hamilton, Ohio. He is most famous as the creator of the Richter magnitude scale, which quantifies the size of earthquakes. The scale was used for the very first time in 1935. He developed the scale together with Beno Gutenberg with whom he worked at the California Institute of Technology, USA. Famous quote: logarithmic plots are a device of the devil.
Rudolf Christian Karl Diesel
(March 18, 1858 - September 30, 1913)
German inventor, famous for inventing the Diesel engine.
Antoine-Joseph (Adolphe) Sax
(November 6, 1814 - February 4, 1894)
Belgian musical instrument designer, best known for inventing the saxophone.
(January 4, 1809 - January 6, 1852)
French inventor of braille, a system that is used worldwide by blind and visually impaired people for reading and writing. Braille is read by passing the fingers over characters made up of an arrangement of one to six embossed points. It has been adapted to almost every known language.
Johannes (Hans) Wilhelm Geiger
(September 30, 1882 - September 24, 1945)
German physicist, co-inventor of the Geiger counter.
Dr Robert Stirling (the Reverend)
(October 25, 1790 - June 6, 1878)
Scottish clergyman, and coinventor of a highly efficient heat engine. Nearly all closed-cycle regenerative gas engines are Stirling engines.
(March 8, 1906 - August 5, 1978)
Swedish inventor and photographer, who invented the Hasselblad 6x6 cm single-lens reflex camera.
Samuel Finley Breese Morse
(April 27, 1791 - April 2, 1872)
American inventor of the Morse Code with Alfred Vail.
Wilhelm Conrad Rontgen
(March 27, 1845 - February 10, 1923)
German physicist who produced and detected electromagnetic radiation in a wavelength range, known as X-rays or Rontgen Rays
Sir Francis Beaufort
(May 7, 1774 - December 17, 1857)
Irish hydrographer and officer in the British Royal Navy. He was the creator of the Beaufort scale for indicating wind force. From the circle representing a weather station, a stave extends, with one or more half or whole barbs. For example, a stave with 3.5 barbs represents Beaufort seven on the scale, decoded as 32-38 mph, or a "Fresh Gale". Also see Beaufort scales
(July 13, 1944)
Hungarian inventor, sculptor and professor of architecture. Inventor of mechanical puzzles but best known for Rubik's Cube, Rubik's Magic and Rubik's Snake.