GK
INVENTIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which one of the following was to be discovered first in the chromosphere of the sun
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Neon
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Helium
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Krypton
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Xenon
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Explanation:
Detailed explanation-1: -Helium was to be discovered first in the chromosphere of the sun.
Detailed explanation-2: -The element was discovered by spectroscopy during a solar eclipse in the sun’s chromosphere by the French astronomer Pierre-Jules-Cesar Janssen in 1868. It was independently discovered and named helium by the English astronomer Joseph Norman Lockyer.
Detailed explanation-3: -The first evidence of helium was observed on August 18, 1868, as a bright yellow line with a wavelength of 587.49 nanometers in the spectrum of the chromosphere of the Sun. The line was detected by French astronomer Jules Janssen during a total solar eclipse in Guntur, India.
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