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Electrical Conductivity I / Elektrische Leitungsphanomene I (Hardcover, 1956 ed.): S. Flugge Electrical Conductivity I / Elektrische Leitungsphanomene I (Hardcover, 1956 ed.)
S. Flugge
R3,178 Discovery Miles 31 780 Ships in 10 - 15 working days

191 Apart from numerous difficulties arising from the high pressure technique as such, there is a natural limitation to the possibility of applying a hydrostatic pressure, since liquids under pressure will solidify above a certain pressure limit. 8 2 Up to pressures of 3 X 10 kg.jm. at room temperature, a liquid like isopentane can be used. For higher pressures helium gas may be used, perhaps to about 9 2 10 kg.jm. , but BRIDGMAN already encountered enormous leakage difficulties 7 when using this gas at 7.10 kg.jm.2 at 90 Degrees K. A solution has been found by applying mechanical pressure for the range 8 9 2 between 3 X 10 and 10 kg.jm. , by using silver chloride as transmittant. In this case, however, one has to apply unknown corrections for shearing stress and deformation of the sample, a problem which BRIDGMAN solved experimentally by a determination of the resistivity in the pressure region between 2 and 8 2 5 X 10 kg.jm. , by the hydrostatic and by the mechanical pressure method as well, and applying the correction factor thus determined to the results obtained at higher pressures. Though this method seems to be right in good approximation, the data for the highest pressures are to be considered as less accurate.

Structure of Atomic Nuclei / Bau der Atomkerne (Paperback, Softcover reprint of the original 1st ed. 1957): S. Flugge Structure of Atomic Nuclei / Bau der Atomkerne (Paperback, Softcover reprint of the original 1st ed. 1957)
S. Flugge
R3,033 Discovery Miles 30 330 Ships in 10 - 15 working days

243 number n and orbital angular momentum 1, but also a total angular momentum 1 f = 1 +/- !. This modification lead to striking successes for the model. Almost without exception, the ground state spins of odd nuclei were found to be cor rectly predicted. Furthermore several other features of nuclei such as the occur rence of isomeric states and the values of magnetic dipole moments were explained, at least qualitatively. However the model completely failed to explain the large values of observed electric quadrupole moments and certain regularities in nuclear spectra, especially of rare earth nuclei. 4. 1950-1953. The emphatic success of the shell-model modified by a spin orbit force gave the necessary confidence and incentive to physicists to apply the model in detail to individual nuclei. Guided by parallel calculations in atomic spectroscopy, considerable effort was devoted to computing spectra of levels of nuclear systems with the so-called "Intermediate Coupling Model" in which the independent particle motion is considered to be perturbed by central particle particle interactions and spin-orbit forces. Computational labour restricts such calculations to nuclei near closed shells, say within four particles or holes of closed shells. This explains why only light nuclei (A < 20) and isolated groups of nuclei higher in the Periodic Table were thus treated. Usually such calculations were rewarded by agreement with experiment especially those for light nuclei 2 and 20S nuclei near the double closed shell at Pb 3.

Astrophysics V: Miscellaneous / Astrophysik V: Verschiedenes (English, French, Paperback, Softcover reprint of the original 1st... Astrophysics V: Miscellaneous / Astrophysik V: Verschiedenes (English, French, Paperback, Softcover reprint of the original 1st ed. 1962)
S. Flugge
R1,560 Discovery Miles 15 600 Ships in 10 - 15 working days
Atoms III - Molecules I / Atome III - Molekule I (Paperback, Softcover reprint of the original 1st ed. 1959): S. Flugge Atoms III - Molecules I / Atome III - Molekule I (Paperback, Softcover reprint of the original 1st ed. 1959)
S. Flugge
R2,990 Discovery Miles 29 900 Ships in 10 - 15 working days

dissociation, E, of a dimer into two monomers and that, E', of a trimer into a dimer and a monomer. The observed velocity distribution for a beam of sodium iodide is shown in Fig. 23. The monomer and dimer distributions, which are each of the form of Eq. (9. 2), are separately shown. The sum of the two assumed distributions is seen to agree with the experimental data. The data for lithium bromide are shown in Fig. 24. The separate distributions for the monomer, dimer, and trimer required to fit the data are shown as is the sum of these distributions. An attempt to describe the observed distribution in terms of a monomer and a dimer only is shown by the dotted line, where the relative amounts of these species have been adjusted to give a fit on the low velocity side of the spectrum. Table 2. Summary oj data on the degree of association oj diatomic molecules. The data on the fluorides are from unpublished results of M. EISENSTADT, G. ROTHBERG and P. KUSCH. Uncertainties in E and E' are given in parentheses. E E' Temperature OK I ----- ----" Species at which a2 a, kcaljmole p 10-2mmHg RbCl 866 0. 063 48. 0 (0. 5) I KCI 0. 083 897 45.8 (0. 7) I KI 823 0. 046, 45.3 (0.9) NaC] 920 0. 259 44. 6 (0.9) i NaI 817 0. 235 38. 6 (3-4) LiC] 2."

Springer Tracts in Modern Physics, 40 (English, German, Paperback, Softcover reprint of the original 1st ed. 1966): S. Flugge,... Springer Tracts in Modern Physics, 40 (English, German, Paperback, Softcover reprint of the original 1st ed. 1966)
S. Flugge, Klaus Stierstadt, Wolfgang Kundt
R1,629 Discovery Miles 16 290 Ships in 10 - 15 working days
Akustik I / Acoustics I (English, German, Paperback, Softcover reprint of the original 1st ed. 1961): S. Flugge Akustik I / Acoustics I (English, German, Paperback, Softcover reprint of the original 1st ed. 1961)
S. Flugge
R2,992 Discovery Miles 29 920 Ships in 10 - 15 working days
Cosmic Rays I / Kosmische Strahlung I (Paperback, Softcover reprint of the original 1st ed. 1961): S. Flugge Cosmic Rays I / Kosmische Strahlung I (Paperback, Softcover reprint of the original 1st ed. 1961)
S. Flugge
R1,583 Discovery Miles 15 830 Ships in 10 - 15 working days
Low Temperature Physics II / Kaltephysik II (Paperback, Softcover reprint of the original 1st ed. 1956): S. Flugge Low Temperature Physics II / Kaltephysik II (Paperback, Softcover reprint of the original 1st ed. 1956)
S. Flugge
R1,616 Discovery Miles 16 160 Ships in 10 - 15 working days

71 For a given value of I the field is independent of the geometrical composition of the coil inside the winding space. The actual number of turns and the cross section of the conductors is entirely determined by the impedance of the power supply to which the magnet should be adapted. In the case of low impedance (high current and low voltage) few turns of thick metal should be used. In the case of high impedance (low current and high voltage) many turns of thin material are needed. High impedance coils are made of square wire or flat strip wound into layers or "pancakes" 1. A nice system for low impedance coils was deve loped by BITTER. The turns of his magnets consist of flat copper discs separated by thin insulating sheets and joined together at their edges. In this type of coil the current density is higher near the axis than at the exterior, resulting into a higher value for G (see above). For the details of the construction we refer to the original papers 2, 3. If the power is dissipated at a low voltage the cooling may be achieved with the help of water. Distilled water should be preferred over mains' water in order to prevent the magnet from corrosion. In the case of a high voltage coil some non-inflammable organic fluid should be used. A low viscosity and a large specific heat are advantageous."

Elasticity and Plasticity / Elastizitat und Plastizitat (Paperback, Softcover reprint of the original 1st ed. 1958): S. Flugge Elasticity and Plasticity / Elastizitat und Plastizitat (Paperback, Softcover reprint of the original 1st ed. 1958)
S. Flugge
R3,059 Discovery Miles 30 590 Ships in 10 - 15 working days
Gas Discharges II / Gasentladungen II (English, German, Paperback, Softcover reprint of the original 1st ed. 1956): S. Flugge Gas Discharges II / Gasentladungen II (English, German, Paperback, Softcover reprint of the original 1st ed. 1956)
S. Flugge
R3,063 Discovery Miles 30 630 Ships in 10 - 15 working days
Principles of Electrodynamics and Relativity / Prinzipien der Elektrodynamik und Relativitatstheorie (Paperback, Softcover... Principles of Electrodynamics and Relativity / Prinzipien der Elektrodynamik und Relativitatstheorie (Paperback, Softcover reprint of the original 1st ed. 1962)
S. Flugge
R1,553 Discovery Miles 15 530 Ships in 10 - 15 working days

will be "asymptotically integrable," that is to say, if we displace a vector parallel to itself along a closed curve whose total length is proportional to r, then, as we remove the curve to infinity, the change of the vector that results from the circuit about the curve will tend to zero. In the presence of gravitational radiation the total energy will not be con served, because the waves carry some energy with them; analogous statements apply to the linear momentum, etc. But that is not all; if there is no coordinate 2 system in which the field strengths drop off as 1/r, then there is no possibility to generate out of one vector" at infinity" a whole field of parallel vectors" at infinity." Thus we are unable in the presence of radiation to define, even at infinity, a "rigid displacement," the type of coordinate transformation that is presumably generated by the energy integral. Under these circumstances it is very difficult to see how one can define the "free vector" energy -linear momen tum in a convincing manner. These ambiguities of course do not imply that general relativity lacks quan tities that obey equations of continuity; rather, general relativity suffers in this respect from an embarras de richesse. There is an infinity of such quantities, and our difficulty is to single out a subset and to present these as the "natural" l expressions for energy, linear momentum, etc."

General Index / Generalregister (Paperback, Softcover reprint of the original 1st ed. 1988): S. Flugge General Index / Generalregister (Paperback, Softcover reprint of the original 1st ed. 1988)
S. Flugge
R3,098 Discovery Miles 30 980 Ships in 10 - 15 working days

Das vielbandige Handbuch der Physik, herausgegeben von Siegfried Flugge, ist wesentlicher Bestand in jeder einschlagigen Bibliothek. Mit seinen herausragenden, teilweise epochemachenden Beitragen, den umfassenden Uberblicken und zahllosen Faktensammlungen stellt es weiterhin eine erstklassige Referenzquelle und ein unerschopfliches Nachschlagewerk dar. Das nunmehr vorliegende, lange verlangte Generalregister vervollstandigt das Handbuch und macht uber gemeinsame Autoren- und Sachregister den Inhalt aller 54 Bande auf einfache Weise zuganglich. Damit gehort das Generalregister in die Bibliothek jedes Physikinstitutes als Orientierungshilfe und unentbehrliches Arbeitsmittel.

Electron-Emission Gas Discharges I / Elektronen-Emission Gasentladungen I (English, German, Paperback, Softcover reprint of the... Electron-Emission Gas Discharges I / Elektronen-Emission Gasentladungen I (English, German, Paperback, Softcover reprint of the original 1st ed. 1956)
S. Flugge
R3,072 Discovery Miles 30 720 Ships in 10 - 15 working days

v. Formation of negative ions by processes other than attachment in the gaseous phase at low X/po 17. Introduction. As early as 1912, J. J. THOMSON [32J in his first mass spectro graph observed negative ions of 0-, Cl-, H- and what he believed to be N-. He at first ascribed these to possible dissociation of polar gaseous compounds by electron impact but control studies using ionization at low energies in glow discharges indicated that this was not the origin. O. W. RICHARDSON [33J in his book on emission of electricity from hot bodies reported negative ions to come from hot salts. From there on many experimental studies over the years indicated that negative ions could be formed by various processes. By the middle nineteen hundred and thirties the data fairly clearly identified several processes as being active and MASSEY and SMITH [34J developed the theory underlying some of them. More data are summarized in MASSEY'S excellent little monograph on Negative Ions and in )L\SSEY and BURHOP'S recent book [35]. Since that period, stimulated by various investigations and certain industrial problems, very careful studies of the appearance of such ions by mass spectrograph have been carried out in the laboratory of K. G. EMELEUS in Belfast by SLOANE and his co-workers [3J that haw clarified the questions and indicated what ions have been observed and something of the processes at work.

Nuclear Reactions II: Theory / Kernreaktionen II: Theorie (Paperback, Softcover reprint of the original 1st ed. 1959): S. Flugge Nuclear Reactions II: Theory / Kernreaktionen II: Theorie (Paperback, Softcover reprint of the original 1st ed. 1959)
S. Flugge
R1,651 Discovery Miles 16 510 Ships in 10 - 15 working days

449 one finds that for y = Fo (e) C= :n; V3 [Po (2'Yj) 3 -kjF(i) + (2'Yj)! Fd (2'Yj) 3 -ijF (*m, } 1 ( 14.17) C2 = :n; [ - (2'Yj)! Fd (2'Yj) 3 -ijF(i) + Fo (2'Yj) 3 -~;r(i)J, and if y is to be Go(e), C and Chave the same form with Go (2'Yj) replacing Po (2'Yj) 1 2 and G~(2'Yj) replacing Fd(2'Yj). The values of the functions at eo =2'Yj may be ob- tained from (14.8). 1 J. K. TYSON has employed the modified Hankel functions of order one- third 2 as solutions of (13.4) to obtain expressions for the Coulomb functions for L =0 which converge near e =2'Yj. His results appear as linear combinations of the real and imaginary parts of n ~(x) = (12)!e-;/6 [A;{- x) - iB;(-x)J, (14.18) and its derivatives multiplying power series in x = (e - 2'Yj)j(2'Yj)1. For values 1 away from the turning point for L =0, TYSON has obtained forms for Po{e) and Go(e) which are similar to (13.1) to (13.3). The JWKB approximation is again the leading term, and some higher order corrections are given. Expressions similar to Eqs. (14.11) and (14.12) have been obtained by T.D. 3 NEWTON employing the integral representation of (4.4). His results give re- presentations of FL(e), Gde) in the vicinity of e=2'Yj [whereas (14.11), (14.12) converge near e=eLJ when L

Electrical Conductivity I / Elektrische Leitungsphanomene I (Paperback, 1956 ed.): S. Flugge Electrical Conductivity I / Elektrische Leitungsphanomene I (Paperback, 1956 ed.)
S. Flugge
R2,964 Discovery Miles 29 640 Ships in 10 - 15 working days

191 Apart from numerous difficulties arising from the high pressure technique as such, there is a natural limitation to the possibility of applying a hydrostatic pressure, since liquids under pressure will solidify above a certain pressure limit. 8 2 Up to pressures of 3 X 10 kg.jm. at room temperature, a liquid like isopentane can be used. For higher pressures helium gas may be used, perhaps to about 9 2 10 kg.jm. , but BRIDGMAN already encountered enormous leakage difficulties 7 when using this gas at 7.10 kg.jm.2 at 90 Degrees K. A solution has been found by applying mechanical pressure for the range 8 9 2 between 3 X 10 and 10 kg.jm. , by using silver chloride as transmittant. In this case, however, one has to apply unknown corrections for shearing stress and deformation of the sample, a problem which BRIDGMAN solved experimentally by a determination of the resistivity in the pressure region between 2 and 8 2 5 X 10 kg.jm. , by the hydrostatic and by the mechanical pressure method as well, and applying the correction factor thus determined to the results obtained at higher pressures. Though this method seems to be right in good approximation, the data for the highest pressures are to be considered as less accurate.

Beta Decay / Betazerfall (Paperback, Softcover reprint of the original 1st ed. 1962): S. Flugge Beta Decay / Betazerfall (Paperback, Softcover reprint of the original 1st ed. 1962)
S. Flugge
R1,494 Discovery Miles 14 940 Ships in 10 - 15 working days
Astrophysics III: The Solar System / Astrophysik III: Das Sonnensystem (English, German, Paperback, Softcover reprint of the... Astrophysics III: The Solar System / Astrophysik III: Das Sonnensystem (English, German, Paperback, Softcover reprint of the original 1st ed. 1959)
S. Flugge
R3,045 Discovery Miles 30 450 Ships in 10 - 15 working days
Atoms II / Atome II (German, English, Paperback, Softcover reprint of the original 1st ed. 1956): S. Flugge Atoms II / Atome II (German, English, Paperback, Softcover reprint of the original 1st ed. 1956)
S. Flugge
R2,354 Discovery Miles 23 540 Ships in 10 - 15 working days
Spektroskopie II / Spectroscopy II (German, English, French, Paperback, Softcover reprint of the original 1st ed. 1957): S.... Spektroskopie II / Spectroscopy II (German, English, French, Paperback, Softcover reprint of the original 1st ed. 1957)
S. Flugge
R1,731 Discovery Miles 17 310 Ships in 10 - 15 working days

Sect. 23. 325 transitions have been drawn for which L1 =0 (n-components). Moreover it is assumed that the hfs splitting of the 3 s 2 Pal, level is negligibly small compared with that of the 3 s 25, /, level. BACK and GOUDSMIT succeeded in resolving the structure of the components of the Bi I line A 4722 A. In each transition they found 10 components, so that in this case 21 + 1 = 10, and the nuclear spin of 209 Bi becomes 1 = 9/, Later on their results for a group of components were 2 reproduced and published by ZEEMAN, BACK and GOUDSMITI. There are only a few examples where the influence of a magnetic field on the hfs of spectral lines has been shown experimentally in weak, intermediate and strong fields. One of them is the beautiful experiment by JACKSON and 2 KUHN on the Zeeman effect of the hfs of the Na D line A 5890 A. These authors used an atomic beam light source and photographed the lines in absorption. They showed that for the components of this line there was a real Zeeman effect in magnetic fields up to a magnetic field strength of about 1600 oersted, whereas there is a transition to the Back Goudsmit effect in stronger fields, the latter being completed at a field strength of about 3000 oersted. VI. The use of the Zeeman effect in the analysis of atomic spectra.

Mathematische Methoden I / Mathematical Methods I (German, Paperback, Softcover reprint of the original 1st ed. 1956): S. Flugge Mathematische Methoden I / Mathematical Methods I (German, Paperback, Softcover reprint of the original 1st ed. 1956)
S. Flugge
R2,210 Discovery Miles 22 100 Ships in 10 - 15 working days

Ziff. 57. 313 ist. Die letzten beiden Gleichungen geIten aber nicht mehr fUr eine Losung (56.5), bei der sowohl w wie auch a willkiirlich vorgegeben sind. Dies ware ja auch im Widerspruch zu dem in Ziff. 47 fUr die Potentialgleichung bewiesenen Satz, daB nicht gleichzeitig beide Randwerte "P und o"P/on willkiirlich vorgegeben werden konnen. Wenn w und a willkiirlich vorgegeben sind, stellt (56.5) zwar im Innern auch eine Losung der Differentialgleichung (56.2) dar, fUr die aber bei Annaherung an den Rand die Werte "P und o"P/on nicht gegen - 4na bzw. 4nw konvergieren. Gl. (56.4) zeigt, wie auch bei unstetigen Randbedingungen "P (r) im Innern des Gebietes samt den auftretenden Ableitungen stetig wird, sofern nur e (r) selbst diese Eigenschaften hat. Diese Tatsache, die schon fUr die zweidimensionale Potentialgleichung aus der Funktionentheorie entnommen wurde, zeigt wieder einen deutlichen Unterschied der elliptischen Differentialgleichung (56.2) gegen- iiber der hyperbolischen Wellengleichung. Bei der Wellengleichung pflanzt sich eine Unstetigkeit der Anfangswerte durch das raum-zeitliche Grundgebiet langs der Charakteristiken fort. Hier dagegen gibt es keine reellen Charakteristiken, und Unstetigkeiten der Randwerte setzen sich nicht in das Grundgebiet fort. III. Eigenwertprobleme. 57. Problemstellung. Es solI vorausgesetzt werden, daB die lineare Differential- gleichung zweiter Ordnung (57.1 ) als passenden Rand einen geschlossenen Rand zulaBt, der als Oberflache ein "Grundgebiet" abgrenzt. Es solI also ein "echtes" Randwertproblem vorliegen.

Prinzipien der Thermodynamik und Statistik / Principles of Thermodynamics and Statistics (German, English, Paperback, Softcover... Prinzipien der Thermodynamik und Statistik / Principles of Thermodynamics and Statistics (German, English, Paperback, Softcover reprint of the original 1st ed. 1959)
S. Flugge
R2,566 Discovery Miles 25 660 Ships in 10 - 15 working days

177 Die statistische Mechanik ist ursprunglich von BOLTZMANN und GIBBS auf der Grundlage der Hamiltonschen Mechanik entwickelt worden. Da wir jedoch den Ausgangspunkt als ein Problem der Atom-Mechanik formullert haben, muB eine streng logische Darstellung des Gebietes notwendig an die Quantenmechanik anknupfen. Trotzdem werden wir im folgenden aus zwei Griinden die Theorie zuerst auf klassischer Grundlage entwickeln. Einmal ist das Begriffssystem der Quantenstatistik (abnlich wie das der Quantenmechanik) in moglichst weit- gehender Analogie zur klassischen Theorie aufgebaut worden. Die Vorwegnahme der letzteren bringt daher eine wesentliche Vereinfachung der Darstellung und eine Erleichterung des Verstandnisses. Zum anderen bleibt fUr die uberwiegende Mehrzahl der Anwendungen von der Quantenstatistik nur eine geringfUgige Korrektur an den Resultaten der klassischen Theorie ubrig, die sich bereits im Rahmen der letzteren plausibel machen (wenn auch nicht beweisen) laBt. Prak- tisch benutzt man daher in den meisten Fillen die Methoden der klassischen statistischen Mechanik, deren Kenntnis somit ohnehin unentbehrlich ist. Die axiomatische Basis der statistischen Mechanik wird naturgemaB zunachst durch die Axiome der Wahrscheinlichkeitsrechnung und der Mechanik gebildet. Auf dieser Grundlage lassen sich allgemeine Satze uber statistische Gesamtheiten , ableiten, die fur den Aufbau der Theorie von auBerordentlicher Bedeutung sind, aber im wesentlichen formalen Charakter besitzen. Bei dem Versuch, die statisti- sche Mechanik zu einer physikalischen Theorie auszugestalten, stoBt man auf eine Lucke, die sich trotz vielen Bemuhungen bisher auf deduktivem Wege nicht hat schlie Ben lassen.

Kristallphysik I / Crystal Physics I (German, English, Paperback, Softcover reprint of the original 1st ed. 1955): S. Flugge Kristallphysik I / Crystal Physics I (German, English, Paperback, Softcover reprint of the original 1st ed. 1955)
S. Flugge
R2,316 Discovery Miles 23 160 Ships in 10 - 15 working days

Ziff. 13. 41 Wir wollen das Problem folgendermaBen formulieren: Gegeben sei eine be- liebige physikalische Eigenschaft eines Kristalls beliebiger Symmetrie. Welche Bedingungen zwingt die Symmetrie des Korpers der betreffenden physikalischen Eigenschaft auf? Man braucht sich dabei keineswegs auf die Kristallsymmetrien zu beschranken. Die Unter- suchungen konnen leicht_auf Korper ausgedehnt werden, die durch irgendeine andere Gruppe von orthogonalen Transformationen in sich iibergefiihrt werden, die die Transformationen dieser Gruppe also als Symmetrieoperationen besitzen. Fiir uns ist nur der Fall der Zylinder- symmetrie (Gruppe Coo) und der Isotropie (Gruppe Roo) wichtig. Beide lassen sich im An- schlul3 an die Symmetrieelemente der Kristalle leicht behandeln. Spezielle* Falle dieses Problems sind schon zahlreich gelost worden, s. z. B. [1], [2]. Der Losungsweg war umstandlich und miihsam, Fehler stellten sich mit- unter ein und blieben lange Zeit unentdeckt. Erst in den letzten Jahren wurde das Problem auf verschiedenen Wegen systematisch angegriffen [3], [4], auf- bauend auf einer Arbeit von HERMANN [5], die zunachst anscheinend unbeachtet geblieben war. Einige der Verfahren, die bisher entwickelt wurden, und ihre Anwendungsmoglichkeiten sollen hier zusamtnengestellt werden. Andere werden nur kurz arlgedeutet, bei diesen muB auf die Originalliteratur verwiesen werden. Physikalische Einwirkungen auf einen Kristallkorper rufen bestimmte Effekte hervor. Die Einwirkung !l kann allgemein durch ein Feld beschrieben werden (Temperatur, elektrisches Feld, mechanische Spannung oder Verzerrung usw.), auch bei dem Effekt ~ ist dies oft moglich, s. Tabelle 4a. Bei hinreichend Tabelle 4a.

Encyclopedia of Physics / Handbuch der Physik - Mathematical Methods II / Mathematische Methoden II (German, English,... Encyclopedia of Physics / Handbuch der Physik - Mathematical Methods II / Mathematische Methoden II (German, English, Paperback, Softcover reprint of the original 1st ed. 1955)
S. Flugge
R1,757 Discovery Miles 17 570 Ships in 10 - 15 working days
Prinzipien der Quantentheorie I / Principles of Quantum Theory I (German, Paperback, Softcover reprint of the original 1st ed.... Prinzipien der Quantentheorie I / Principles of Quantum Theory I (German, Paperback, Softcover reprint of the original 1st ed. 1958)
S. Flugge
R1,709 Discovery Miles 17 090 Ships in 10 - 15 working days
Thermodynamik der Flussigkeiten und Festkoerper / Thermodynamics of Liquids and Solids (German, English, Paperback, Softcover... Thermodynamik der Flussigkeiten und Festkoerper / Thermodynamics of Liquids and Solids (German, English, Paperback, Softcover reprint of the original 1st ed. 1962)
S. Flugge
R1,809 Discovery Miles 18 090 Ships in 10 - 15 working days

liff. 1. 3 Aus dem geschilderten Sachverhalt ergibt sich, daB die Aufgabenstellung der statistischen Thermodynamik kondensierter Phasen notwendig verschieden ist von der der Gastheorie. Wahrend bei der letzteren die Ermittlung der thermo- dynamischen Funktionen konkreter Systeme durchaus im Vordergrund steht, handelt es sich bei kondensierten Phasen in erster Linie urn die grundsatzliche Klarung der hier auftretenden Erscheinungen, wie etwa der Struktur der Flussig- keiten, des Schmelzens, der thermodynamischen Eigenschaften der Losungen starker Elektrolyte usw. Das schlieBt naturgemaB nicht aus, daB man auch bei kondensierten Phasen in weitem Umfange quantitative VerglEiche zwischen Theorie und Experiment durchfUhrt. Solche Vergleiche mussen aber hier unter einem anderen Aspekt als in der Gastheorie betrachtet werden, was am deut- lichsten in der Tatsache zum Ausdruck kommt, daB die Theorie fast durchweg adjustierbare Parameter einfuhrt. Man kann danach in einem etwas primitiven Sinne sagen, daB die statistische Thermodynamik kondensierter Phasen, verglichen mit der Gastheorie, nur von geringem praktischen Nutzen ist. Urn so groBer ist ihre Bedeutung fur das phy- sikalische Verstandnis der Materie im kondensierten Zustand. Indem sie an ein- fachen Beispielen zeigt, wie gewisse Erscheinungen zustandekommen, liefert sie die begriffliche Grundlage fUr die Beschreibung und Einordnung solcher Er- scheinungen auch in komplizierteren Fallen. Aus dieser Moglichkeit einer in ihren Grundlagen exakten begrifflichen Erfassung ergeben sich neue Fragestel- lungen und Anregungen, welche die experimentelle Forschung in auBerordent- lichem MaBe befruchten.

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