The fascinating way helium changes your voice

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The fascinating way helium changes your voice

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9 Views • Jul 19, 2018

Description

Inhaling helium and talking like Daffy Duck is a classic party trick. But not many know how helium works. Helium is much lighter than air, so sound waves move much faster through the gas. This amplifies the higher frequencies in your voice. The gas sulfur hexaflouride works in the opposite way.