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Note coins
Coins of different denominations sound appropriate notes | |
"Coins" consisting of tubular bells of different lengths. The lower the pitch of the note each coin sounds when struck, the higher the denomination, so a middle C coin is worth half as much as a bottom C coin and twice as much as a top C coin, and so on. Counterfeit coins made of different composition
would be detectable because they would sound the wrong notes, and dropping coins onto a hard surface would give some indication of the total value from the sound of the cacophony or harmony produced.
Ooka Tadasuke
http://en.wikipedia.../wiki/Ooka_Tadasuke
The stolen smell. [rcarty, Mar 23 2011]
http://www.halfbakery.com/idea/Piano_20Fork_e9
Piano_20Fork_e9
sub set of..... [xenzag, Mar 23 2011]
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Annotation:
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[+] I like it and also think a game may be played by throwing the coins into a bucket to make a song! |
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Is this meant as a pun, as in a pound note? |
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//Counterfeit coins made of different composition would be
detectable because they would sound the wrong note//
They would not, in other words, ring true. |
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I suggest cutting normal coins in a spiral. That'd give you a long coil, without changing the coin much. |
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I've a couple of solid silver coins, and a counterfeit that is clad copper. There is a great difference in how they ring when I bounce them on a counter the way folks used to do when gold and silver coins were used. As [mouseposture] says, "ring true" is an old phrase. |
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