inventors facts Selected as the most interesting among technology related questions in Technology quiz What was the main weakness of Colt revolvers, comparing to its competitors?Lack of possibility to use metallic cartridges. Samuel Colt missed a great opportunity in firearms development when he dismissed an idea from one of his gunsmiths, Rollin White. White proposed a "bored-through" revolver cylinder to allow the use of metallic cartridges in a handgun. After Colt fired White for suggesting an improvement to his revolver, White took his idea to Colt's competitor, Smith & Wesson, who patented his invention and kept Colt from being able to build cartridge firearms for almost 20 years.Created by: globalquiz.orgpistols facts » Who invented the mercury-in-glass thermometer?Gabriel Daniel Fahrenheit. Daniel Gabriel Fahrenheit was a German physicist, engineer, and glass blower who is best known for inventing the mercury-in-glass thermometer (1714), and for developing a temperature scale now named after him Created by: Paweł Kołodziejczykdiscoverers facts » Who created the QWERTY keyboard layout?Christopher Latham Sholes. QWERTY - a symbolic Latin alphabetical name for typewriters and computers, taken from the first six letters in a row below the row of digits, viewed from the left. The first typewriters used an alphabetical key setting. However, with the fast typing of the neighborhood of frequently used keys caused mutual jamming of the arms with the fonts. In 1878, the first typewriter with a QWERTY keyboard was patented. The creator of the QWERTY layout was American journalist and inventor Christopher Latham Sholes.Created by: Katarzyna Dąbrowskahistory of technics facts » Who made the first violin?Andrea Amati. The oldest documented violin to have four strings, like the modern violin, is supposed to have been constructed in 1555 by Andrea Amati. Earlier instuments only had three strings and were called violetta. The violin immediately became very popular, both among street musicians and the nobility.Created by: globalquiz.orgclassical music facts » What nationality was Nikola Tesla?Serbian. Nikola Tesla was born on 10 July 1856 to Serbian parents in the village of Smiljan, Austrian Empire (modern-day Croatia). He studied at Austrian Polytechnic in Graz (he didn't finish it even though he was getting the highest possible grades), later moved to Prague, Budapest and France. Eventually he relocated to New York City aged 28.Created by: globalquiz.orgSerbia facts » Who discovered the process of vulcanization?Charles Goodyear for many years improved the method of hardening the rubber. When he succeeded in 1839, investors were already offended by earlier failures. Charles died in misery. The Goodyear company was named in his honor, but otherwise is not related to him.Created by: GabrielBarantires facts » Who invented spectroscope?Joseph van Fraunhofer. Joseph Ritter von Fraunhofer was a Bavarian physicist and optical lens manufacturer. He made optical glass and achromatic telescope objective lenses, invented the spectroscope, and developed diffraction grating. Created by: Ninjaiinventions facts » Who constructed the first radio receiver?Nikola Tesla. Marconi was considered to be the first radio constructor but in 1943 the US Supreme Court has granted Tesla patent rights. Marconi admitted he was using Tesla's work in his construction.Created by: Ninjaiinventions facts » Where and when did Leonardo die?May 2, 1519 in Amboise (France). In 1516, Leonardo entered the service of king Francis I of France, being given the use of the manor house Clos Lucé near the king's residence at the royal Château d'Amboise. He spent the last three years of his life here. He died on 2 May 1519 and was buried in the Chapel of Saint-Hubert in Château d'Amboise in France. Created by: Tschuka Leonardo da Vinci facts » Play technology quiz and see all the questions.