questionedithistorytranslations

Who invented the modern zipper?

Thomas Alva Edison
Gideon Sundback
Walter Hunt
Philo Remington
The product debuted at the 1893 World's Fair in Chicago, but it didn't have much success. The modern zipper was eventually designed in 1913 by Gideon Sundback, who worked at the Universal Fastener Company in Hoboken, New Jersey. He received a patent for his “Separable Fastener" in 1917.
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Answers by country

Thomas Alva Edison
Gideon Sundback
Walter Hunt
Philo Remington
answers
flagAustralia
22%
72%
0%
5%
18
flagthe United States
18%
62%
14%
3%
27
flagGermany
16%
46%
26%
10%
30
flagPoland
16%
41%
16%
25%
802
flagthe United Kingdom
4%
28%
38%
28%
21

What was the main weakness of Colt revolvers, comparing to its competitors?

low speed
low durability
lack of possibility to use metallic cartridges
poor shooting precision

Who invented the mercury-in-glass thermometer?

Galileo Galilei
Anders Celsius
Gabriel Daniel Fahrenheit
William Kelvin

Who created the QWERTY keyboard layout?

Christopher Latham Sholes
Jan Szczepanik
Thomas Alva Edison
Dag Hammarskjöld

Which city lies on the Golden Horn Bay?

Venice
Naples
Genoa
Istanbul