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Liquid Nitrogen Show
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===Frozen Finger=== '''''Warning''''': This demonstration is a high risk demonstration, and has a high shock factor. Do not perform for any audience younger than 7th grade. Do not perform if you have never practiced it. Please follow all safety precautions with this demonstration. Preparation: Before the show, take one of the gloves and a hot dog. Use the hot dog to fill at least one of the fingers, making sure to stuff it carefully so it isn't an obvious fake. If you want to go for maximum shock value, add 1-2 drops of food dye into each finger you fill. Set aside out of sight. # After presenting the Leidenfrost effect, put the rubber glove onto one hand. Do so carefully, and curl the finger(s) that are replaced into your palm. be careful not to show your palm to the audience, to keep the illusion up. # Slowly and dramatically insert the fake finger(s) into the liquid Nitrogen. Explain to your audience what is happening to your "finger(s)" as they freeze solid. ## This part requires careful timing to be done right. Do not stick any more than 1/2 of the fake finger(s) into the liquid nitrogen, or you will risk potentially serious injury to your hand. As the hot dog is freezing during this part, you will want to pay careful attention to what you feel. You will know that the hot dog is frozen either by careful timing (It takes about 15 seconds), or by feel; the hot dog might start to freeze to your knuckle if it is in too long. # When ready, pull the finger(s) out, and show how they are definitely frozen. Place your frozen finger(s) on the wood board, and proceed to shatter the finger(s) with the hammer. # Finish by showing that they were not your real fingers. Remove the glove to show that your hand is all right.
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