We all know inhaling helium changes voices...but why? We love Eric M. Rogers' demonstration! 🎈 Travel back in time to the 1979 #XmasLectures, free to watch on our website: rigb.org/christmas-lectures/watch/1979/atoms-for-enquiring-minds Do not try this at home - this may look like fun, but inhaling helium can be dangerous as it displaces the oxygen in our lungs, risking suffocation. Our science presenters are professionals in a controlled environment (also, the '70s were wild). | Royal Institut
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