1. Decrease in intensity of a signal, beam, or wave as a result of absorption of energy and of scattering out of the path of a detector, but not including the reduction due to geometric spreading, i.e., the inverse square of distance effect.
For the purists, there are about 145 copper cents / pennies in a pound. On the other hand, post 1982 zinc cents which have a copper plating over a much softer, much lighter zinc planchet. So there are about 180 zinc cents / pennies per pound. Those numbers of pennies per pound are of course for new, uncirculated, zinc or copper cents. When minted, new copper cents weigh about 3.11 grams each and new zinc cents about 2.5 grams each and that is our basis for the number of pennies in a pound. However, once they are put in circulation, they start to ware thinner and thinner.
Pennies (1-cent coins) are made of copper and zinc. The zinc is actually on the inside, so we only see the copper color on the outside! A nickel (5-cent coin) is made out of copper and another metal that is called nickel.That should be pretty easy to remember! Dimes (10-cent coins), quarters (25-cent coins) and half dollars (50-cent coins) are made of three really thin sheets of metal that get pressed together.The outside layers of metal are copper and nickel.The middle sheet is just copper ! You can see it when you look at the edge of the coins.imes (10-cent coins), quarters (25-cent coins) and half dollars (50-cent coins) are made of three really thin sheets of metal that get pressed together. The outside layers of metal are copper and nickel. The middle sheet is just copper ! You can see it when you look at the edge of the coins.