Fun with Sulphur Hexafluoride

Sulphur Hexafluoride is a completely transparent gas 6 times heavier than air. This means it works about exactly the opposite of Helium. Rather than making a persons voice high-pitched, it lowers it. Rather than making objects float on air, objects can float on Sulphur Hexafluoride. The end part of this video shows somebody float a foil boat in a container of Sulphur Hexafluride. It’s surreal.

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