ehrenfest paul (33 resultados)

Condición: Good. Item in good condition. Textbooks may not include supplemental items i.e. CDs, access codes etc.

Hardcover. Condición: Very Good. No Jacket. Book is entirely clean and solid.

Originalbroschur.22cm. Condición: Wie neu. 2015. VI,114 pages. In EXCELLENT shape. Am unteren Rand der letzten INDEX-Seite winziger privater Vorbesitzerstempel. Sprache: Englisch Gewicht in Gramm: 200.

hardcover. Condición: very good(+). xvi, 114 pages. Slim 8vo, blue cloth with gold spine lettering (spine lightly worn). Ithaca: Cornell University Press, (1959). Internally clean and tight. A very good(+) copy. Translated by Michael J. Moravcsik. Sole authorized English translation of the original German edition, prepared with the permission of the B. G. Teubner Verlagsgesellschaft mbH, Stuttgart.

Soft cover. Condición: Good. TOLMAN, R.C.; Paul Ehrenfest and Boris Podolsky. "On the Gravitational Field Produced by Light", in Physical Review, vol 37 number 5, 1 March 1931, pp 602-615 in the issue of pp 477-662 (12). Original wrappers. This would have been a nice copy if it had not been three-hole punched. That said: $45.

Soft cover. Condición: Good. Richard C. Tolman and Paul Ehrenfest, "Temperature Equilibrium in a Static Gravitational Field," Physical Review, December 15, 1930, vol 36 #12, pp 1793-1798. Original wrappers. This would have been a nice copy if it had not been three-hole punched. __+__ "The TolmanEhrenfest effect created by Richard C. Tolman and Paul Ehrenfest, argues that temperature is not constant in space at thermal equilibrium, but varies with the spacetime curvature. This relationship leads to the concept of thermal time which has been considered as a possible basis for a fully general-relativistic thermodynamics. It has been shown that the TolmanEhrenfest effect can be derived by applying the equivalence principle to the concept that temperature is the rate of thermal time with respect to proper time."--Wiki __+__ Abstract: In the case of a gravitating mass of perfect fluid which has come to thermodynamic equilibrium, it has previously been shown that the proper temperature T0 as measured by a local observer would depend in a definite manner on the gravitational potential at the point where the measurement is made. In the present article the conditions of thermal equilibrium are investigated in the case of a general static gravitational field which could correspond to a system containing solid as well as fluid parts.

Condición: very good. Bewerkt door H. Casimir. Met teekeningen in den tekst. Den Haag : W.P. van Stockum, 1932. Orig. printed wrappers. 111 pp. Dutch text. Some occas. light foxing. Very good copy. - Verslag van een vijftal lezingen door Prof. Paul Ehrenfest in de winter van 1931-32 gehouden over de jongste ontwikkeling van de quantumtheorie. Condition : very good copy. ISBN 9780198519973. Keywords : HISTORY OF SCIENCE, Einstein, Albert (1879-1955).

Den Haag, W.P. van Stockum, 1932, 1e druk, 111 pag., illustraties/ diagrammen, origineel omslag, onafgesneden.

Soft cover. Condición: Very Good. Ehrenfest, P. "Zu Herrn v. Ignatowskys Behandlung der Bornschen Starrheitsdefinition II" in Physikalische Zeitschrift, 1911, vol 12, pp 412-413. (Ignatowsky's Treatment of Born's Definition of Rigidity II) and with: Ignatowski, W. "Zum Ehrenfestschen Paradoxon" p 414. In the complete issue of pp369-416, and one plate. This issue is neatly extracted from a larger bound volume.

8vo. xvi, 114 pp. Bibliography. Blue paper-backed boards, gilt-stamped spine, glassine dust-jacket; some offsetting, jacket foot and rear corner torn. Ownership signature. Very good. RELATIVELY RARE IN JACKET.

Soft cover. Condición: Very Good. __+__The Tolman-Ehrenfest Effect (1930)__+__ Richard C. Tolman and Paul Ehrenfest, "Temperature Equilibrium in a Static Gravitational Field", offprint from Physical Review, December 15, 1930, vol 36 #12, pp 1793-1798. Original wrappers. Very good condition. __+__ ".the TolmanEhrenfest effect.created by Richard C. Tolman and Paul Ehrenfest, argues that temperature is not constant in space at thermal equilibrium, but varies with the spacetime curvature.This relationship leads to the concept of thermal time which has been considered as a possible basis for a fully general-relativistic thermodynamics. It has been shown that the TolmanEhrenfest effect can be derived by applying the equivalence principle to the concept that temperature is the rate of thermal time with respect to proper time."--Wiki __+__ Abstract: "In the case of a gravitating mass of perfect fluid which has come to thermodynamic equilibrium, it has previously been shown that the proper temperature T0 as measured by a local observer would depend in a definite manner on the gravitational potential at the point where the measurement is made. In the present article the conditions of thermal equilibrium are investigated in the case of a general static gravitational field which could correspond to a system containing solid as well as fluid parts.".

Gr.-8°. 90 S. Späterer Leinenband mit goldgeprägtem Rückentitel (leicht verzogen). Buchblock bei S. 18/19 gebrochen, bei 78/79 ein wenig angebrochen. Sonst sauberes und gut erhaltenes Exemplar Aus: Encyclopädie der mathematischen Wissenschaften, Band IV, 2, II, Heft 6. Sprache: Deutsch.

Hardcover. Condición: Near Fine. EHRENFEST, Paul. "Welche Züge der Lichtquantenhypothese spielen in der Theorie der Wärmestrahlung eine wesentlich Rolle?" in: Annalen der Physik, series 4, volume 36, 1911. Leipzig, Johann Ambrosius Barth viii.1088 pp., 4 plates, with Ehrenfest's paper on pp 91-118. Bound in a sturdy black cloth. Provenance: mathematical library at the University of Berlin (several low-key oval rubberstamps "Mathematischer verein Universititat Berlin Biliothek". Near-Fine. [++] "As a teacher Ehrenfest was unique. Albert Einstein described him as peerless and the best teacher in out profession whom I have ever known. His lectures always brought out the basic concepts of a physical theory, carefully extracting them from the accompanying mathematical formalism. He worked closely with his students, doing everything in his power to help them develop their own talents. His nickname among the students, Uncle Socrates, captures his probing questioning, the force of a personality that could sometimes be overwhelming, and the infectious warmth of his humor. The critical approach also led Ehrenfest to his greatest positive contribution to physics: the adiabatic principle. Ehrenfest was one of the first to try to understand the significance of the strange new concept of energy quanta that Max Planck had introduced into physics in 1900 in his theory of blackbody radiation. In a series of papers culminating in his major study of 1911, Which Features of the Quantum Hypothesis Play an Essential Role in the Theory of Heat Radiation?, [the paper offered here], Ehrenfest picked out the essentials of the early quantum theory and showed how they fit together. He proved rigorously that the energy of electromagnetic vibrations cannot take on all values cannot vary continuously if the total energy of the blackbody radiation in an enclosure is to be finite: Planck s assumption that energy is a discrete variable was, therefore, logically necessary and not just sufficient. Ehrenfest also showed, by an analysis of Wien s displacement law, that the ratio of energy to frequency was the only variable that could be quantized for a harmonic oscillator, if one wanted to maintain the statistical interpretation of entropy. "--Complete DSB online.

cloth, dustjacket, 4to xii+632 pp. facsimile reprints of all 76 relevant scientific publication of Ehrenfest in physics, quantum mechanics, gravitation, wave mechanics, etc.; in English and German; also a copy of his unfinished doctorate dissertation; very good condition (dustjacket with some wear; interior clean, no annotations).

Condición: Gebraucht / Used. Hardcover, very good, with slightly damaged dustj. xii,632pp.

Hardcover. Condición: Fine. 1st Edition. EINSTEIN, Albert and Paul Ehrenfest. "Zur Quantentheorie der Strahlungsgleichwichts" in Zeitschrift fur Physik, 1923. pp 301-306 in the volume of 415pp. Offered in the full volume 19 bound with full volume 20 of 426pp, so altogether vi,415,vii,426pp. Bound in cloth and marbled boards. Former owner's bookplate and rubberstamp on title page, otherwise a FINE copy. Also in volume 19 are papers by Gustav Hertz, K.F. Hertzfeld, Georg Joos, W Kossel, Alfred Lande, Lise Meitner, Arnold Sommerfeld, R Seeliger, Gregor Wentzel, and just for good measure, Nicholas Raschevsky. Volume 20 contains works by W, Bothe, W, Pauli, Larl Przibram, and agfain N. Raschevsky. Lovely copy.

Soft cover. Condición: Near Fine. 1st Edition. First edition, complete journal issue in original printed wrappers, of the first formulation of Ehrenfest's 'Adiabatic Hypothesis' of quantum theory. "Two important heuristic principles have guided quantum physicists during the period 1913-1925, viz. Ehrenfest's Adiabatic Hypothesis and Bohr's Principle of Correspondence. The Adiabatic Hypothesis, first formulated by Ehrenfest in 1913 [in this paper], says: 'If a system be affected in a reversible adiabatic way, allowed motions are transformed into allowed motions'" (Van der Waerden, Sources of Quantum Mechanics, pp. 3-4). "In a series of papers that appeared from 1913 to 1916, Ehrenfest studied the possibility of generalizing the notion of quantization, previously applied only to oscillators. He showed that every periodic system possesses a property invariant under slow (adiabatic) changes in its parameters: the ratio of the kinetic energy, averaged over one period, to the frequency. Ehrenfest proposed that only such adiabatic invariants could properly be quantized and also that when the parameters of a quantized system are changed adiabatically, the allowed quantum states of the original system continue to be the allowed quantum states. Ehrenfest and his student J. M. Burgers showed that this adiabatic principle encompassed the various quantization methods introduced independently by a variety of physicists. The adiabatic principle was widely used and highly prized as one of the few reliable guides to progress during the difficult years of the old quantum theory, when even the laws of conservation of energy and momentum were suspect" (DSB). 8vo (228 x 152 mm). Original printed wrappers (faint rubber stamp to front wrapper).

LeatherBound. Condición: New. Leather Binding on Spine and Corners with Golden leaf printing on spine. Bound in genuine leather with Satin ribbon page markers and Spine with raised gilt bands. A perfect gift for your loved ones. Reprinted from 1913 edition. NO changes have been made to the original text. This is NOT a retyped or an ocr'd reprint. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set and contains approximately 32 pages. IF YOU WISH TO ORDER PARTICULAR VOLUME OR ALL THE VOLUMES YOU CAN CONTACT US. Resized as per current standards. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Language: German.

Leatherbound. Condición: NEW. Leather Binding on Spine and Corners with Golden leaf printing on spine. Bound in genuine leather with Satin ribbon page markers and Spine with raised gilt bands. A perfect gift for your loved ones. Reprinted from 1913 edition. NO changes have been made to the original text. This is NOT a retyped or an ocr'd reprint. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set and contains approximately 26 pages. IF YOU WISH TO ORDER PARTICULAR VOLUME OR ALL THE VOLUMES YOU CAN CONTACT US. Resized as per current standards. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Language: German.

1st Edition. This paper, "On the Quantum Theory of the Radiative Equilibrium" introduces the expression "negative irradiance" ("negative Einstrahlung") for the emission of a quantum by action of irradiance (Calaprice, 121). Following his work on general relativity in 1916, Einstein continued searching for new ways in which the existence of photons might lead to observable derivations from the classical picture" (Pais, p. 413). In 1922, after six years of experimental and theoretical work, Arthur H. Compton discovered what came to be called the Compton effect; Peter Debye also discovered this independently and virtually simultaneously. Pauli then used Compton & Deby's work to extend Einstein's 1917 work to the case of radiation in equilibrium with free electrons (Pais, 414). "Pauli examined the requirements of detailed balance under Lorentz transformations and found that scattering of light by free electrons must include a term of a form which we would now call stimulated emission . . . Einstein and Ehrenfest then showed that Pauli's results could be obtained by an extension of [Einstein's] 1917 paper with the unnecessary specialization to discrete energy levels removed . . . "The core of Einstein's argument is that the scattering process should be broken into two parts: the absorption of energy from radiation of frequency 1 and the emission of energy as radiation of frequency 2" Lewis, "Einstein's derivation of Planck's radiation law," AJP, 1973, 38-44. Weil, Einstein Bibliography, 138; Pais, Subtle is the Lord, 21, 413; Lewis, "Einstein's derivation of Planck's radiation law," AJP, 1973, 38-44; Calaprice, Einstein Almanac 121. ALSO INCLUDED IN VOLUME 19 ARE PAPERS BY: Hertz, Meitner, Lande, Hertzfeld, Joos, Kossel, Lande, Sommerfeld, Seeliger, Wentzel, Raschevsky, Ebert, and Toussaint among many others. ALSO INCLUDED IN VOLUME 20 ARE PAPERS BY: Pauli, Ornstein, Raschevsky, Bothe, Walter, Hermann, and Przibram among many others. CONDITION: Berlin: Julius Springer. Volumes 19 & 20 bound as one. [iv], 415pp + [v], 426pp. NOT EX-LIBRARY. Solidly and cleanly bound in blue cloth, gilt-lettered at the spine. Bright and clean inside and out. Very good + condition.

Leipzig, Johann Ambrosius Barth, 1911. Later full cloth. Stamps on title-page. In "Annalen der Physik", Vierte Folge, Band 36. - VIII,1088 pp. and 4 plates. (Entire volume offered). Ehrenfest's paper: pp. 91-118. First edition of the paper in which the term "Ultraviolet Catastrophe" appeared for the first time. "Ehrenfest was one of the first to try to understand the significance of the strange new concept of energy quanta that Max Planck had introduced into physics in 1900 in his theory of blackbody radiation. In a series of papers culminating in his major study of 1911 (the paper offered), "Which Features of the Quantum Hypothesis Play an Essential Role in the Theory of Heat Radiation?," Ehrenfest picked out the essentials of the early quantum theory and showed how they fit together. He proved rigorously that the energy of electromagnetic vibrations cannot take on all values - cannot vary continuously - if the total energy of the blackbody radiation in an enclosure is to be finite: Planck?s assumption that energy is a discrete variable was, therefore, logically necessary and not just sufficient. Ehrenfest also showed, by an analysis of Wien?s displacement law, that the ratio of energy to frequency was the only variable that could be quantized for a harmonic oscillator, if one wanted to maintain the statistical interpretation of entropy."(DSB).

Einstein, Albert (1879-1955) and Paul Ehrenfest (1880-1933). Zur Quantentheorie des Strahlungsgleichgewichts. Offprint from Zeitschrift für Physik 19 (1923). 301-306pp. Original printed self-wrappers. 230 x 157 mm. Light toning but very good. First Edition, Offprint Issue. In 1916, after publishing his great work on general relativity, Einstein returned to the question of blackbody radiation. In November 1916 he wrote to his friend Besso that "a splendid light has dawned on me about the absorption and emission of radiation" (quoted in Pais, p. 405), one that led him to a new derivation of Planck's radiation law and convinced him of the reality of light-quanta (photons). After publishing these results in three papers, culminating with the famous "Zur Quantentheorie der Strahlung" (1917), Einstein kept looking for "new ways in which the existence of photons might lead to observable derivations from the classical picture" (Pais, p. 413). He found none until 1923, when Arthur Compton and Peter Debye independently derived the relativistic kinematics for the scattering of a photon off an electron at rest. The work of Compton and Debye led Wolfgang Pauli to extend Einstein's work of 1917 to the case of radiation in equilibrium with free electrons (see Pais, p. 414n). "Pauli examined the requirements of detailed balance under Lorentz transformations and found that scattering of light by free electrons must include a term of a form which we would now call stimulated emission . . . Einstein and Ehrenfest then showed that Pauli's results could be obtained by an extension of [Einstein's] 1917 paper with the unnecessary specialization to discrete energy levels removed . . . The core of Einstein's argument is that the scattering process should be broken into two parts: the absorption of energy from radiation of frequency 1 and the emission of energy as radiation of frequency 2" (Lewis, p. 42). Lewis, "Einstein's derivation of Planck's radiation law," American Journal of Physics 41 (1973): 38-44. Pais, Subtle is the Lord, ch. 21. Weil, Albert Einstein Bibliography, 138. .

(22 x 14,5 cm). VIII, 1088 S. Mit Abbildungen und 4 Tafeln. Halbleinwandband der Zeit. Erste Ausgabe. - "Ehrenfest was one of the first to try to understand the significance of the strange new concept of energy quanta that Max Planck has introduced into physics in 1900 in his theory of blackbody radiation. In a series of papers culmination in his major study of 1911. Ehrenfest picked out the essentials of the early quantum theory and showed how they fit together" (DSB). - Stempel auf Titel. Einband leicht berieben, sonst sauber und wohlerhalten. - DSB 4, 293.

Leather Bound. Condición: New. Language: German. Presenting an Exquisite Leather-Bound Edition, expertly crafted by the prestigious organization "Rare Biblio" with Original Natural Leather that gracefully adorns the spine and corners. The allure continues with Golden Leaf Printing that adds a touch of elegance, while Hand Embossing on the rounded spine lends an artistic flair. This masterpiece has been meticulously reprinted in 2024, utilizing the invaluable guidance of the original edition published many years ago in 1911. The contents of this book are presented in classic black and white. Its durability is ensured through a meticulous sewing binding technique, enhancing its longevity. Imprinted on top-tier quality paper. A team of professionals has expertly processed each page, delicately preserving its content without alteration. Due to the vintage nature of these books, every page has been manually restored for legibility. However, in certain instances, occasional blurriness, missing segments, or faint black spots might persist. We sincerely hope for your understanding of the challenges we faced with these books. Recognizing their significance for readers seeking insight into our historical treasure, we've diligently restored and reissued them. Our intention is to offer this valuable resource once again. We eagerly await your feedback, hoping that you'll find it appealing and will generously share your thoughts and recommendations. Lang: - German, Pages: - 98, Print on Demand. If it is a multi-volume set, then it is only a single volume. We are specialised in Customisation of books, if you wish to opt different color leather binding, you may contact us. This service is chargeable. Product Disclaimer: Kindly be informed that, owing to the inherent nature of leather as a natural material, minor discolorations or textural variations may be perceptible. Explore the FOLIO EDITION (12x19 Inches): Available Upon Request. 98.

Leatherbound. Condición: NEW. Leatherbound edition. Condition: New. Leather Binding on Spine and Corners with Golden leaf printing on spine. Bound in genuine leather with Satin ribbon page markers and Spine with raised gilt bands. Pages: 98. A perfect gift for your loved ones. Reprinted from 1911 edition. NO changes have been made to the original text. This is NOT a retyped or an ocr'd reprint. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set. IF YOU WISH TO ORDER PARTICULAR VOLUME OR ALL THE VOLUMES YOU CAN CONTACT US. Resized as per current standards. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Language: German Pages: 98.