‎[REVUE SPATIAL]‎
‎SPATIAL N°6. ‎

‎Dossier CNES - lot de feuillets divers : L'espace et la recherche au service des sciences fondamentales, Spot un système spatial de téléobservation de la terre, TDF1 un système spatial de radiodiffusion directe- le centre national d'études spatiales‎

‎CNESS. 1981. In-4. En feuillets. Bon état, Couv. convenable, Dos satisfaisant, Intérieur frais. Nombreux feuillets regroupés dans une chemise avec le sigle CNES. 3 photos disponibles.. . . . Classification Dewey : 629.4-Astronautique‎

‎L'espace et la recherche au service des sciences fondamentales, Spot un système spatial de téléobservation de la terre, TDF1 un système spatial de radiodiffusion directe- le centre national d'études spatiales organisme de mise en oeuvre de la politique spatiale française, Ariane une famille de lanceurs lourds pour l'europe.Télécom 1 un système de télécommunication et de télématique spatiales, l'étude des phénomènes aérospatiaux non-identifié, le centre spatial de Toulouse, les ballons, le centre spatial guyanais - centre national d'études spatiales... Classification Dewey : 629.4-Astronautique‎

‎Boniface Oluoch Oindo. Spatial patterns of species diversity in Kenya Spatial p‎

‎Boniface Oluoch Oindo. Spatial patterns of species diversity in Kenya Spatial patterns of species diversity in Kenya. In English /Boniface Oluoch Oindo. Spatial patterns of species diversity in Kenya Prostranstvennye zakonomernosti vidovogo raznoobraziya v Kenii. Thesis to fulfill the requirements for the degree of doctor on the authority of the Rector Magnificus of Wageningen University. Doctoral thesis (2001), Wageningen University, the Netherlands. In English. Enschede Februk BV 2001. 157 p. You are welcome to reach out to us for a detailed description of the copies currently available. Delivery of this book may take longer than usual including extended processing and pre-shipping time, no expedited shipping is available. Please advise us if you have a set date or a deadline to receive your order.SKUalb2ac4060f03ae335c‎

‎Spatial Icons. Textual and Performative Spatial Icons: Textuality and Performat‎

‎Spatial Icons. Textual and Performative Spatial Icons: Textuality and Performativity In Russian /Prostranstvennye ikony. Tekstualnoe i performativnoe Spatial Icons: Textuality and Performativity Editor A. Lidov M. Indrik 2009. 194s. We have thousands of titles and often several copies of each title may be available. Please feel free to contact us for a detailed description of the copies available. SKUalbd93e480ace014130.‎

‎Ein Weg zur experimentellen Prüfung der Richtungsquantelung im Magnetfeld [in: Zeitschr. für Physik vol. 7, 1921:] (+) Der experimentelle Nachweis des magnetischen Moments des Silberatoms [in Zeitschr. für Physik vol. 8, 1922] (+) Der experimentelle ... - [DISCOVERY OF SPATIAL QUANTIZATION - THE STERN-GERLACH EXPERIMENT]‎

‎Berlin, Julius Springer, 1921 & 1922. 8vo. Entire volumes 7-9, 1921 and 1922, of ""Zeitschrift für Physik"" bound in three contemporary half cloth bindings over marbled boards, volumes 7 and 8 in uniform bindings, volume 9 slightly differing, with more gilding to spine. Tiny marginal dampstain to the first leaves of vol. 9, and large library-stamp to front free end-papers of volumes 7-8, otherwise, all three volumes fine, clean, and tight. All three title-pages with library-stamp. Pp. 249-53" 110-11 349-55. [Entire volumes: VI, 414 pp IV, 419 pp." IV, 412 pp.].‎

‎First printing of Stern and Gerlach's seminal papers in which the first spatial quantization, atomic magnetic moments, was first presented. With these papers, the first clear proof for the spin of the electron appeared, profoundly influencing the world of physics. The discovery of the deflection of particles is often used to illustrate basic principles of quantum mechanics and demonstrates that electrons and atoms have inherent quantum properties.Spatial quantization had been introduced merely as a theoretical concept by Sommerfeld in 1916, but no one before Stern had ever empirically demonstrated its existence, and some physicists even considered it to be nothing more than a mathematical tool. In his 1921-paper Stern proposed an empirical test:""The idea for the experiment proposed by Stern was simple enough. A beam of silver atoms is produced by letting silver evaporate in an oven with a small opening. The beam is collimated and travels in X direction until it falls on a glass plate. Between collimators and plate an inhomogeneous magnetic field is produced. It points in y direction and also changes its strength as a function of y. If the atoms possess a magnetic moment, the field pulls them away from the X axis. If the moments are oriented at random, there will be a broadening of the beam. But if spatial quantization exists with just two possible orientations, then the beam will be split in two. Half the atoms are pulled in the positive and half in the negative y direction. It should be treated as a spinning top with a magnetic needle in its axis."" ( Brandt. The Harvest of a Century, p. 124).In November 1921, Stern and Gerlach observed a broadening of the beam, its size increased from 0.1 mm till 0.3 mm when the field was turned on. ""This result proved that silver atoms possess a magnetic moment. With a still better collimated beam in February 1922 where the splitting of the beam into two was observed. Spatial quantization was established."" ( Brandt. The Harvest of a Century, p. 124).Only after the birth of quantum mechanics it became clear that the atoms themselves are not turned, but that their quantum mechanical wave function assumes one of its possible values in the apparatus. The discovery penetrated all aspects of physics"" it was documented that electrons are responsible for the hyperfine structure of the spectroscopic lines and more generally that the direct observation of the spin of the electron is the most clear evidence of quantization in quantum mechanics.The three volumes also contains the following papers of interest:1. Born, Max. Über elektrostatische Gitterpotentiale. Bd. 7. pp. 124-140.2. Born, Max. Zur Thermodynamik der Kristallgitter. Bd. 7. pp. 217-248.3. Geiger, H. Reichweitemessungen an alfa-Strahlen. Bd. 8. pp. 45-58.4. Brody, E. & Max Born. Bemerkungen zy unseren Abhandlungen ""Über die Schwingungen eines mechanischen Systems mit endlicher Amplitude und ihre Quantelung"" [...] . Bd. 8. Pp. 205-208.5. Heisenberg, Werner. Zur Quantentheorie der Linienstruktur und der anomalen Zeemaneffekte. Bd. 8. pp. 273-297.6. Bohr, Niels. Der Bau der Atome und die physikalischen und chemischen Eigenschaften der Elemente. Bd. 9. pp. 1-67.And many others.‎

‎Ein Weg zur experimentellen Prüfung der Richtungsquantelung im Magnetfeld [in: Zeitschr. für Physik vol. 7, 1921:] (+) Der experimentelle Nachweis des magnetischen Moments des Silberatoms [in Zeitschr. für Physik vol. 8, 1922] - [DISCOVERY OF SPATIAL QUANTIZATION - THE STERN-GERLACH EXPERIMENT]‎

‎Berlin, Julius Springer, 1921 & 1922. 8vo. Entire volumes 7-8, 1921 and 1922, of ""Zeitschrift für Physik"" bound in two uniform contemporary half cloth bindings over marbled boards. Library-stamp to title-pages, otherwise, both volumes fine, clean, and tight. Pp. 249-53" Pp. 110-11. [Entire volumes: VI, 414 pp" IV, 419 pp.].‎

‎First printing of Stern and Gerlach's seminal papers in which the first spatial quantization, atomic magnetic moments, was first presented. With these papers, the first clear proof for the spin of the electron appeared, profoundly influencing the world of physics. The discovery of the deflection of particles is often used to illustrate basic principles of quantum mechanics and demonstrates that electrons and atoms have inherent quantum properties.Spatial quantization had been introduced merely as a theoretical concept by Sommerfeld in 1916, but no one before Stern had ever empirically demonstrated its existence, and some physicists even considered it to be nothing more than a mathematical tool. In his 1921-paper Stern proposed an empirical test:""The idea for the experiment proposed by Stern was simple enough. A beam of silver atoms is produced by letting silver evaporate in an oven with a small opening. The beam is collimated and travels in X direction until it falls on a glass plate. Between collimators and plate an inhomogeneous magnetic field is produced. It points in y direction and also changes its strength as a function of y. If the atoms possess a magnetic moment, the field pulls them away from the X axis. If the moments are oriented at random, there will be a broadening of the beam. But if spatial quantization exists with just two possible orientations, then the beam will be split in two. Half the atoms are pulled in the positive and half in the negative y direction. It should be treated as a spinning top with a magnetic needle in its axis."" ( Brandt. The Harvest of a Century, p. 124).In November 1921, Stern and Gerlach observed a broadening of the beam, its size increased from 0.1 mm till 0.3 mm when the field was turned on. ""This result proved that silver atoms possess a magnetic moment. With a still better collimated beam in February 1922 where the splitting of the beam into two was observed. Spatial quantization was established."" ( Brandt. The Harvest of a Century, p. 124).Only after the birth of quantum mechanics it became clear that the atoms themselves are not turned, but that their quantum mechanical wave function assumes one of its possible values in the apparatus. The discovery penetrated all aspects of physics"" it was documented that electrons are responsible for the hyperfine structure of the spectroscopic lines and more generally that the direct observation of the spin of the electron is the most clear evidence of quantization in quantum mechanics.The three volumes also contains the following papers of interest:1. Born, Max. Über elektrostatische Gitterpotentiale. Bd. 7. pp. 124-140.2. Born, Max. Zur Thermodynamik der Kristallgitter. Bd. 7. pp. 217-248.3. Geiger, H. Reichweitemessungen an alfa-Strahlen. Bd. 8. pp. 45-58.4. Brody, E. & Max Born. Bemerkungen zy unseren Abhandlungen ""Über die Schwingungen eines mechanischen Systems mit endlicher Amplitude und ihre Quantelung"" [...] . Bd. 8. Pp. 205-208.5. Heisenberg, Werner. Zur Quantentheorie der Linienstruktur und der anomalen Zeemaneffekte. Bd. 8. pp. 273-297.And many others.‎