Sound and Solids: Stereo Hangers (Document)
JESSICA: Stephen H. of Germantown, Tennessee, sent us the directions to make a sound machine using a coat hanger and string. All you need to do is tie two pieces of string to the corners of a metal coat hanger. Then loop the string around your fingers. Put your fingers into your ear and bang the coat hanger up against something. (clinking)
Only I can hear this, but this is what you'd hear if you were in my place. (loud vibrating clanging) The sound waves are going through the vibrating hanger into the string and right into my ears. Claudio, you want to try it?
CLAUDIO: Okay, cool. So, put my fingers through it.
JESSICA: Put your fingers right into your ears.
CLAUDIO: Okay. (loud vibrating clanging) Whoa.
JESSICA: Yeah, isn't it, like, really cool how it's magnified? It's really deep.
CLAUDIO: Now try experimenting. Different materials vibrate differently. See if you can hear the differences in the way a spoon sounds or the way a muffin tin sounds. Mmm! (clang)
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