townes h k (11 risultati)

Soft cover. Condizione: Good. 1st Edition. Review. 1957. Paper (6-1/8 x 9-5/8 in.), 286pp, illus. (maps, line art, 4 pls. B&W photos) (USNM Bull. 209). Treats vespid wasps of two subfamiles for N. Amer. Good (text like new; cover somewhat worn and with library stamps).

Soft cover. Condizione: Good. Faunal treatise. 1952. Paper (6 x 9 in.), 250 pp., some figures. Treats the midges and gnat flies of Connecticut.

Hardcover. Condizione: Good. 1st Edition. Catalog. 1951. Cloth (6 x 9 in.), 1420pp., 1 map (fold-out of faunal zones). Catalogs all the North American (N. of Mexico) species of ants, bees, sawflies, and wasps (Hymenoptera) known up to 1951. Good (cover and spine slightly soiled; former owner name on frontleaf).

Hardcover. Condizione: Good.

Condizione: Good. 1420, folding map. . Binder's cloth. Good ex-lib. copy: stamp on title page. .

Condizione: New. 522, . . HB. NEW. . .

Condizione: Good. 1420; 305; 584, folding map. 235x155mm. HB. 3 vols, cloth, lightly rubbed. Vol. 1, binding partly broken between title page and page 1. Ex-lib.: ink and blind stamps to endpapers + title pages only. Good. USDA Agriculture Monograph No. 2.

Soft cover. Condizione: New. A COMPLETE SET of Fascicles 1-9 of the Diptera of Connecticut, totalling 1,438 pages, copiously illustrated, with identification keys and descriptions of species. Fasc. 1: (509 p., 4 pl., 56 figs.) External Morphology, Key to Families, Tanyderidae, Ptychopteridae, Trichoceridae, Anisopodidae, Tipulidae. Fasc. 2: (48 p., 6 pl., 16 figs.) Culicidae, the Mosquitoes. Fasc. 3: (51 p., frontis, 2 pl., 38 figs.) Asilidae. Fasc. 4: (92 p., 8 figs.) Tabanidae, Phoridae. Fasc. 5: (225 p., 34 pl.) Tendipedidae (Chironomidae), Heleidae (Ceratopogonidae), Fungivoridae (Mycetophilidae). Fasc. 6: (218 p., 15 pl., 29 figs.) March Flies (Bibionidae), Gall-Midges (Itonididae or Cecidomyiidae). Fasc. 7: (54 p., 7 pl.) Psychodidae. Fasc. 8: (115 p., 20 pl.) Scatopsidae, Hyperoscelidae, Blepharoceridae, Deuterophlebiidae, Dixidae. Fasc. 9: (126 p., 81 figs.) Simuliidae, Thaumaleidae. [Heavy item, requires extra postage.] NEW; Fasc. 1 with crease on back cover, Fasc. 5 with ding at top of spine, Fasc. 6 with half inch chip out of top of spine. Fascicle 1 reprinted 1966, all others original edition.

Ann Arbor, Michigan. 305 pp., 162 distribution maps, 116 figs, hardback gr. 8 [15.5 x 23.5 cm].

127 p., 5 plates, paperbound. Published in: Annals of the Entomological Society of America. Library stamps, else good copy.

Hardcover. Condizione: Very Good. Townes, Dyson, Feynman! K. Shimoda, T.C. Wang, C.H. Townes. **Very Early developmental Paper on the Maser** AND two significant Freeman Dyson Papers** AND a FEYNMAN & Cohen** Shimoda, Wang, Townes: "Further Aspects of the Theory of the Maser" in the Physical Review, Vol 102, 3 issues (May 15-June 15) with the Shimoda et al on pp 1308-1321 in the volume of pp 93-1708. Cloth-backed marbled boards. Provenance: from the technical library of Siemens & Halske Munich with several of their rubber stamp ownership marks. VG copy. "Dr. T.C. Wang was a key researcher at Columbia University in the 1950s who worked alongside Nobel laureate Charles H. Townes and J.P. Gordon on the development and theory of the first ammonia-beam maser. Wang contributed to foundational research on maser coherence, noise, and atomic beam technologies, often appearing in photos with early maser instruments."--Optica "Townes worked on the theory and application of the maser, for which he obtained the fundamental patent, and other work in quantum electronics associated with both maser and laser devices. He shared the 1964 Nobel Prize in Physics with Nikolay Basov and Alexander Prokhorov."--Physics Today "Koichi Shimoda (1919-2023) was a pioneering Japanese physicist who made foundational contributions to maser and laser spectroscopy in the 1950s and 60s. Working alongside figures like C.H. Townes, he helped establish maser theory and developed tunable infrared maser spectrometers." Also bound with: Freeman Dyson, "General Theory of Spin-Wave Interactions" pp 1217-1230. "An ideal model of a ferromagnet is studied, consisting of a lattice of identical spins with cubic symmetry and with isotropic exchange coupling between nearest neighbors. The aim is to obtain a complete description of the thermodynamic properties of the system at low temperatures, far below the Curie point. In this temperature region the natural description of the states of the system is in terms of Bloch spin waves. The nonorthogonality of spin-wave states raises basic difficulties which are examined and overcome."--APS Journals Archive/abstract. 2120 citations. Freeman Dyson, "Thermodynamic Behavior of an Ideal Ferromagnet" pp 1230-1244. ("Freeman Dyson's landmark 1956 paper, "Thermodynamic Behavior of an Ideal Ferromagnet" provided the rigorous theoretical foundation for low-temperature spin-wave theory in Heisenberg ferromagnets.")--APS Journals Archive. 891 citations. And of course, Richard Feynman and Michael Cohen: "Energy Spectrum of the Excitations in Liquid Helium" pp 1189-1204. This is a significant paper in the physics of superfluidity and quantum liquids, and one of the works that formed the foundation of modern quantum condensed-matter theory, helping to explain why superfluid helium behaves so strangely. 1218 citations. 714.3.