The Nipkov disk is a prototype..?

camera

telegraph

turntable

A Nipkow disk is a mechanical, rotating, geometrically operating image scanning device, patented in 1885 by Paul Gottlieb Nipkow. This scanning disk was a fundamental component in mechanical television through the 1920s and 1930s.

Glory Cycles wikipedia → Nipkow disk

electronicsinventorssciencetechnology

Electronics quiz Inventors quiz Science quiz

You will play as

Answers by country

the Netherlands

66%

14%

Greece

60%

26%

Australia

58%

16%

the United States

40%

14%

21%

22%

India

39%

28%

19%

13%

107

France

36%

18%

Poland

30%

28%

15%

24%

2277

the United Kingdom

21%

19%

21%

38%

Germany

18%

30%

27%

23%

Republic of Ireland

15%

38%

30%

15%

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

In which form does Aloe plants?