When inhaling helium
History of Moderator - Lisboa, Portugal
When inhaling helium, the speed of propagation of the voice increases, resulting in a thinner sound. This is due to the lightness of the gas, which is approximately 7 times lighter than air made up of 78% nitrogen (N2). On the other hand, inhaling a denser gas would cause the voice to propagate at a lower speed, which would make it more serious... Did you know?
