10 most difficult inventors riddlesInventors quiz
Who made the first violin?
Giovanni Paolo Maggini
Leonardo da Vinci
The oldest documented violin to have four strings, like the modern violin, is supposed to have been constructed in 1555 by Andrea Amati. Earlier instruments only had three strings and were called violetta. The violin immediately became very popular, both among street musicians and the nobility.
Who invented automatic car window cleaning device, called the windshield wiper?
Mary Anderson (1866 -1953) was an American real estate developer, rancher, viticulturist and inventor of the windshield wiper blade. In November 1903 Anderson was granted her first patent for an automatic car window cleaning device controlled from inside the car, called the windshield wiper. In 1922, Cadillac became the first car manufacturer to adopt them as standard equipment.
What was the main weakness of Colt revolvers, comparing to its competitors?
lack of possibility to use metallic cartridges
poor shooting precision
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.
Who discovered the process of vulcanization?
John Boyd Dunlop
Giovanni Battista Pirelli
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.
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
Who invented the 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.
Where and when did Leonardo die?
May 2, 1519 in Venice
May 5, 1514 in Florence
May 2, 1519 in Amboise (France)
May 5, 1514 in Rome
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.
Who Discovered the magnetic field?
Hans Christian Oersted
Danish physicist and chemist Hans Christian Oersted (1777-1851) discovers in 1820 that electric current affects a compass needle and create magnetic fields. He was the first scientist to find the connection between electricity and magnetism. He is remembered today for Oersted's Law.
Who created the QWERTY keyboard layout?
Christopher Latham Sholes
Thomas Alva Edison
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.
Who created Scrabble?
Edgar Allan Poe
In 1938, American architect Alfred Mosher Butts created the game as a variation on an earlier word game he invented called Lexiko. In 1948, James Brunot bought the rights to manufacture the game in exchange for granting Butts a royalty on every unit sold. There are around 4,000 Scrabble clubs around the world.