NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
During the manufacture of powder metal, the size distribution of the metal spheres can be determined to some extent by the distribution of light scattered by the spheres while they are streaming by a laser beam. Micrographs show the presence of chains of spheres and of spheres with a number of smaller spheres attached to them. It is of interest to compare the pattern of the radiation scattered by such agglomerates with the pattern produced by isolated spheres. An integral equation is used to compute the fields scattered by two perfectly conducting touching spheres when a plane monochromatic wave is incident from an arbitrary direction.
Proceedings Title
Digest of IEEE/Antennas and Propagation Society International Symposium, 1994
Marx, E.
(1994),
Radiation Scattered by Two Touching Spheres, Digest of IEEE/Antennas and Propagation Society International Symposium, 1994
(Accessed October 10, 2025)