Helium inhalation
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PIRA index: 3B30.50
Description
The inhalation of helium causes the demonstrator's voice to become high pitched due to the molecular mass of helium compared to air.
Equipment
- helium gas (balloon)
- willing participant
Instructions
Have the participant inhale the balloon full of helium. Their voice will become higher pitched due to helium having a lower molecular mass than air.
Keywords
helium, high-pitch, voice
Images & Movies
Figure1
