Evidence of helium was first observed on this day in 1868 by French astronomer Pierre Janssen during a total solar eclipse. ☀️ Take a look at helium atoms forming in this amazing cloud chamber, as Christmas Lecturer Peter Wothers demonstrates. | Royal Institution of Great Britain
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🎈 Fun fact: Helium was discovered on this day in 1868… and now it powers the party! Celebrate Helium Discovery Day with a peek into the gas that makes our tanks so float-worthy. 🧪✨ #BalloonTime #HeliumDiscoveryDay #ScienceOfCelebration #FloatOn | Balloon Time
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