NPNNonprotein Nitrogen NPNNew Party Nippon(political party; Japan) NPNNew Plan Network NPNNational Prevention Network NPNNational Petroleum News(magazine) NPNNational Producer Number(insurance) NPNNegative-Posi
NPNNewport News(Virginia) NPNNonprotein Nitrogen NPNNew Party Nippon(political party; Japan) NPNNew Plan Network NPNNational Prevention Network NPNNational Petroleum News(magazine) NPNNational Producer Number(insurance) NPNNegative-Positive-Negative(transistor) ...
This sug- gests that the iridescence color is caused by diffraction, which was demonstrated by an experiment using an argon ion laser illuminat- ing the shell to produce a distinct diffraction image. The strength of the iridescence color can be correlated to both the groove density of the ...