10 most difficult inventors riddlesInventors quiz
When was the first machine gun patented?
On May 15, 1718, Englishman James Puckle patented his machine gun, the world's first! You may have thought the Gatling gun or the Maxim machine gun was the first machine gun, but depending on how you define “machine gun” James Puckle, Esq. (yes, he was a lawyer) got there first.
Who developed the glass harmonica?
Leonardo da Vinci
The glass harmonica is a grater idiophone, developed by Benjamin Franklin in 1761, which has occupied a prominent position in the history of music, but is largely forgotten today. The instrument consists of differently sized, interleaved glass bells, which are stored on a common horizontal axis, which in turn can be rotated by a pedal in rotation.
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 quartz clock in 1927?
A quartz clock is a clock that uses an electronic oscillator that is regulated by a quartz crystal to keep time. The first quartz clock was built in 1927 by Warren Marrison and J. W. Horton at Bell Telephone Laboratories. Since the 1980s, when the advent of solid-state digital electronics allowed them to be made compact and inexpensive, quartz timekeepers have become the world's most widely used timekeeping technology, used in most clocks and watches, as well as computers and other appliances that keep time.
Who invented WhatsApp?
Jan Koum is a Ukrainian American computer programmer. In January 2009, Koum bought an iPhone and realized that the then seven-month-old App Store was about to spawn a whole new industry of apps. He visited his friend Alex Fishman and the two talked for hours about Koum's idea for an app. Koum almost immediately chose the name WhatsApp because it sounded like "what's up", and a week later on his birthday, February 24, 2009, he incorporated WhatsApp Inc. in California.
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
What was the Bessemer converter used for?
for cement production
during production of steel
The Bessemer bulb is a cylindrical refractory vessel used to make steel from pig iron. The process is named after its developer Henry Bessemer, who published it in England after the mid-19th century. The Bessemer process was the first inexpensive industrial process for the mass production of steel from molten pig iron before the development of the open hearth furnace.