Who invented spectroscope?

Issac Newton
William Herschel
Joseph van Fraunhofer
Edwin Hubble
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.

Answers distribution

Issac Newton
William Herschel
Joseph van Fraunhofer
Edwin Hubble
answers
flagIndia
0%
14%
71%
14%
14
flagthe United States
13%
13%
40%
31%
22
flagGermany
18%
22%
33%
25%
48
flagPoland
18%
23%
30%
27%
5115
flagthe United Kingdom
10%
29%
28%
31%
74
flagUnknown
19%
23%
27%
29%
691

Gender

men30%
women30%
Issac Newton
19%
17%
William Herschel
23%
23%
Joseph van Fraunhofer
30%
30%
Edwin Hubble
26%
28%

Language versions

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Who invented spectroscope?
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