How many ridges are on the edge of a quarter?

Answer

There are 119 ridges around the edge of a quarter. Quarters contain an alloy of 8.33 percent nickel and 91.67 percent copper. They are 1.75 millimeters thick and 24.26 millimeters in diameter. Prior to 1965, quarters were made entirely out of silver.

The ridges on quarters and other high-value coins, such as dimes, half-dollars and dollars, were initially used to prevent counterfeiting and discourage shaving material from their sides, as they were made of precious metals. Coins are no longer made using precious metals, but the ridges remain in the quarter's design to aid in identification of the coin by the visually impaired.

Q&A Related to "How many ridges are on the edge of a quarter?"
A quarter has 119 grooves on its edge, a dime has one less groove.-go
http://www.chacha.com/question/how-many-ridges-are...
There are 119 ridges - aka "reeds" - on a US quarter; its Canadian counterpart has 130 ridges. Additional snippet. A US dime has 118 ridges - that's only one fewer ridge
http://wiki.answers.com/Q/How_many_ridges_are_ther...
A dime has 118 ridges. That seems like a lot of ridges for such a small coin. I don't think your average potato chip has close to 118 ridges. Still, given a choice, I'll take the
http://www.ask.com/web-answers/Reference/Dictionar...
A quarter has 119 ridges on its edge, and a dime has 118. Nickels are smooth & contain no ridges.
http://www.kgbanswers.com/how-many-ridges-are-on-a...
Explore this Topic
A quarter has one hundred and nineteen (119) ridges and is actually called reeds. A ridge is a geological feature consisting of a chain of mountains or hills that ...
The ridges around the edge of the quarter is to prevent counterfieitng. The amount of ridges has no specific significance. The ridges were used to keep people ...
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