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.
Set your digital kitchen scale to grams and weigh the 14 karat jewelry first. Pennyweight is the standard measurement used to weigh and value gold and other precious metals. There are 20 pennyweight in every ounce and 1.552 grams in every pennyweight.Divide the weight of your gold in grams by 1.552 to find its equivalent in pennyweight. Since 14 karat gold in only 58.3 percent gold, multiply the total pennyweight by .583.The result is the amount of pure gold in your jewelry.eigh your 18 karat gold next and find its total in grams. Multiply the gram weight by 1.552 to find the weight in pennyweight. Since 18 karat jewelry contains 75 percent gold, multiply the pennyweight by .75 to find the pennyweight of the gold content.