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On This Day – August 18 : Helium (He) gas was discovered in the solar spectrum on this day in 1868

Description

Helium is named after the Greek god of the sun, Helios. It was first detected as an unknown yellow spectral line signature in sunlight during a solar eclipse by the French astronomer Jules Janssen.

Type of Activity

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group work, working independently

Audience

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TeacherStudent
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ADDITIONAL INFORMATION

What happened today in chemistry? Explore 366 days of chemistry history at On This Day in Chemistry, an RSC Learn Chemistry site. rsc.li/chemistry-calendar