Helium inhalation

Back to 3B - Wave motion
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

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  Figure1