On This Day – May 17 : English astronomer Sir Joseph Norman Lockyer was born on this day in 1836

Description

While observing a spectrum of the sun during a solar eclipse in 1868, Lockyer noticed a prominent yellow line, which he identified as an unknown solar element. He named this helium (He) after the Greek word for sun.

Type of Activity

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group work, working independently

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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