In this YouTube video, an unknown hand demonstrates the density of an invisible gas, sulfur hexaflouride. The gas is so dense that an aluminum foil boat floats on it, like water. The boat is sunk when the dense gas is scooped out of the tank and into the boat.
Everyone, at some point, has given themselves a Chipmunks voice by inhaling helium. Helium is much less dense than air and when it passes through your vocal cords they vibrate at a higher frequency giving your voice a higher pitch. Sulfur hexaflouride passing over your vocal cords makes them vibrate much more slowly, giving you a deep voice. In this video, some guy in a white lab coat demonstrates the effects of sulfur hexaflouride on your voice. He knows his science, but get a tad nervous. As he trips on his words he inhales a little too much gas and nearly vomits. The gas also sinks to the bottom of your lungs and would stay there unless you turn upside down to let it fall out (also an entertaining part of the video).
Enjoy,
berg
Noggin Fodder
www.nogfod.com
Feed your head.
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