October 28, 2008
Stumble It!Sulfur hexafluoride is an interesting gas, it basically has the oposite effect of helium. It is heavier than air (over five times denser) and when inhaled it makes your voice deeper, talk in about 3 octaves lower.
You can buy a compressed cylinder from sigmaaldrich.com , though I must say $229 seems a trifle expensive for a joke.
