Lancaster, PA: The American Physical Society, 1947. Wraps. First Edition. 839-944, ix pp. 4to. Green paper wraps that are quite clean inside and out, very minor age toning to spine. Light waffling to top edge of pages from moisture at an earlier date. Does not afffect text or overall condition. Very Good.
Frank R. Elder and his team's seminal paper on the discovery of synchrotron radiation which is the radiation that results from the radial acceleration of charged particles.