Saturday, 18 August 2018

Good News in History, August 18

150 years ago today, the colorless, odorless, non-toxic gas, Helium, was first discovered. Named for the Greek Titan of the Sun, Helios, it showed up as an unknown yellow spectral line signature during a solar eclipse. Norman Lockyer was the first to propose that it was a new element, which he named. The second most […]

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