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.
Why Not Pennies? You may ask, why not accumulate 95% copper (pre-1982 mint date) pennies? They already seen a spike in their base metal value to 2.2 cents each. But unfortunately, pennies have two problems: confusion and bulk. They are confusing, because 95% copper pennies are now circulating side-by-side with 97.5% zinc pennies. They are also about four times as bulky (per dollar of face value) as nickels. With nickels you wonât have to spend time sorting out pre-1982 varieties. At present, visually date sorting pennies simply isnât worth your time.