Einstein

1925 · 1413 — 1925. 1st Edition. FIRST EDITION IN ORIGINAL PICTORIAL WRAPPERS. Near fine condition. <br /> <br /> "This paper is an early example of a series of papers - which continued until his death - in which he explored within the confines of general relativity possible pathways in the direction of a unified field theory. Here he discusses whether it is possible to explain why electrons and protons have equal charge but unequal masses. He notes that a more natural solution to the field equations would be particles of opposite sign and equal mass thus anticipating but for unrelated "Select Annotated Biography 114 p. 307. <br /> <br /> ALSO INCLUDED: Zeeman "Lorentz en de Hypothese der Licht-Quanta Bij de Voortplanting Van Licht" pp. 325-330 Lorentz was Zeeman's mentor. <br /> <br /> ALSO INCLUDED: Some of the issue is a memorial to Lorentz. CONDITION DETAILS: Complete issue. Very slight wear at the spine. Bright and clean inside and out. Near fine condition. unknown