Changing your voice with different inhaled gasses
Don’t try this at home. Seriously.
So everyone knows (or should know) about using helium to make your voice really high. In the following video, Adam Savage not only explains why, but demonstrates that with a higher density gas you can get the effect in reverse, making you sound like Satan instead of one of the chipmunks.
You can suffocate by overdoing it with either of these gasses, but SF6 is probably a little easier since it is heavier than air. But it still makes me laugh every time.
Hat tip to Phil at the Bad Astronomy Blog.
