[HARTREE, D.R.]. Extensive collection of over 300 offprints relating to modern physics, including important papers by: Heisenberg, Bohr, etc. V.p., v.d. (1918-32). Together over 300 offprints bound in 30 volumes, blue cloth; many with wrappers bound in. SOME PAPERS SIGNED OR INSCRIBED BY THEIR RESPECTIVE AUTHOR.
The developement of quantum mechanics can be said to have started with Planck (1899) and continues to the present (i.e., "string theory"). The period of 1920-30 is often referred to as the "Golden Age" of quantum mechanics.
Douglas Rayner Hartree was primarily interested in methods of numerical mathematical analysis for complex systems. His "self-consistant field" method for many-electron atoms became the standard approach, the "Hartree Model." This was later generalized by Foch (the "Hartree-Foch" method) to solid state problems. Hartree additionally applied his methods to ballistics, atmospheric and stellar physics and hydrodynamics. Interested in machine calculation, he pioneered the introduction of digital computers in the U.K. and the United States.
D.R. Hartree was an undergraduate and graduate student at Cambridge, receiving his Ph.D. under R.H. Fowler in 1926, leaving in 1929 to accept a chair at the University of Manchester. Following his manifest interests, this collection of papers was apparently collected between 1919 and 1929, his Cambridge years.
Starting with Bohr's major 1918 Copenhagen paper, the collection includes approximately 9 additional papers by Bohr, and papers by Heisenberg (6), Schrödinger (2), Dirac (9), Born (3), Milne (36), Rutherford (2), Bragg (19), Sommerfeld (3), Urey (3) as well as others by Blackett, Kapitza, Kramers, Stoner, Mott, and Slater. Hartree himself is represented by 14 papers, and his mentor Fowler by 24.
Papers of particular interest include three by Gamow on the alpha decay of the nucleus; the independent parallel paper by Gurnay and Condon; Plancks Nobel Prize paper of 1922; a series of Dirac papers from 1925-28 on developing the relativistic theory of electrons, Eddington's 1922 paper on relativity; and Born's paper on developing the probability interpretation for which he received the Nobel Prize in 1954. (30)