In this program you’ll learn how some very ordinary materials behave in
very extraordinary ways when subjected to these super-cold temperatures. See
a rapidly spinning jet-propelled ping-pong ball! Thrill to the sight of a gas
filled balloon completely flattening out in liquid nitrogen, only to
re-inflate to its original diameter after warming to room temperature. Watch
in amazement as Dr. Friedman nails together two pine boards!
“What’s so amazing about that?” you ask. Well, for one
thing he uses a banana frozen in liquid nitrogen as the hammer, and a piece of
frozen blue tack as the nail.
We’ll make liquid oxygen, sky-blue in color, and show that a sphere of
it can be suspended in a magnetic field until it evaporates. We’ll also see
why it’s used as the oxidizer to send ships into space. You will have
the opportunity to witness the phenomenon of superconductivity and see a rare
earth magnet levitating in space. And if these temperatures are not cold
enough for you, watch Dr. Friedman lower the bar by making solid nitrogen at a
temperature of -211 °C (-348 °F), a mere 62 °C above absolute zero.
A nail was driven through a piece of wood, using a banana
hammer, frozen with liquid nitrogen.