The Collected Papers of Albert Einstein, Volume 15

This volume covers one of the most thrilling two-year periods in twentieth-century physics, as matrix mechanics--developed chiefly by W. Heisenberg, M. Born, and P. Jordan--and wave mechanics--developed by E. Schrödinger--supplanted the earlier quantum theory. The almost one hundred writings by Einstein, of which a third have never been published, and the more than thirteen hundred letters show Einstein's immense productivity and hectic pace of life.