reviews
The authors have made extensive contrihutions to the theory of dynamic light scattering, and their book accordingly is strong in the text, it appears that meaningfulprOgin its theoretical orientation although some Iess has achieved Only for the direct of the main aspects of experimental techdetermination of the first-order density maniques are outlined, trix. The first eight chapters are written at a This text is divided jnto chapters level which is accessible to seniors and gradand areference section consisting Of 8Pagea, uate students, while most of the remaining The topics discussed in the chapters are as seven chapters make heavier mathematical follows: Chapter 1 considers the ensemble and demands. straightforward density matrix, Chapters 2 and 3 consider the treatment light scattering by fluctuation reduced density matrix in a general sense theory precedes application to a number of (included in these chapters are examples of physical systems, with the main emphasis on ohtaining the first- and second-order density those containing macromolecules, ~h~ aumatrix for a single Slater determinant and a thors provide a particularly valuable chapter from oriente. sketch of a least squares approximation for on the light scattering a reduced density matrix of general order, fluctuations, Here they show how to use Chapters 4 and 5 consider the analytical and the powerful method of irreducible tensors to physical properties of thefirst-order reduced treat such systems, I,, two chapters the kidensity matrix, and Chapters 6 and 7 con,,,ti, ofMori and zwanzig are apelude by examining the analyticalandphysplied to systems in which intermolecular ical interpretation of the second-order recorrelations affect orientation duced density matrix. hi^ reviewer found these chapters stirnu. Some general comments on the text seem lating hut the most demanding ofany in the appropriate. The presentation is elegant, hook, mathematical, and primarily abstract, with 1, addition to its importance as a source f, the exception of Chapter 5. Chapter 5 is the information dynamic light scattering longest chapter in the hook with 39 pages in ,, the book provides readable and penwhich applications to small molecular sysetrating treatments of a number of topics t~ molecular tems are discussed; this chapter presents which are work of Davidson and coworkers on natural Among these are thermoorbitals and, in my opinion, is the most Browian motion, translational and readable. In the other chapters discussions of and the meanings of mathematical expressions the most (and general) of are not that extensive; perhaps, this feature topics treated is that of time correlation might hamper a reader's ability to work functions, These have the most apthrough the text. propriate theoretical tools to relate In summary, this important text in conequilibrium properties to the rate of decay of junction with the pages of referenceslisted fluctuation in equilibrium systems. The would provide a good framework by power and status of time correlation function for a pretty exciting Wecia' topics course Or in non-equilibrium statistical mechanics is independent study program with somewhat similar to that of the partition reduced density matrices. function in equilibrium statistical mechanics. ~ ~zeroka~ i This~ bookl gives an excellent presentation of these matters, and for this reason it has value lej,igh universily ~ ~ t pennsyivania h ~ ~18015 h ~ not~ only for those who wish to understand dynamic light scattering, hut also for those who wish to have an introduction to the kind Dynamic Llght Scattering, wlth of statistical mechanics which will become Appllcatlons to Chemlstry, Biology, and increasingly important to chemists. In this Physics respect the book is comparable to Bruce J. Berne, Columbia University, McQuarrie's "Statistical Mechanics,'' the and Robert Pecora, Stanford University. only other book known ta this reviewer which John Wiley & Sons, New York, 1976. vii provides a treatment of time correlation 376 pp. Figs. and tables. 18 X 26 cm. functions which is hoth introductory in its $24.95. approach and substantial in its depth of coverage. Dvnnmir lirht seatterine. -, olios lieht seatDewey K . Carpenter tering spectroscopy, is currently the most Louisiana State University important experimental technique available Balm Rouge, Louisiana 70803 for measuring the rates at which macromolecules translate, rotate, and (if the macromolecule is non-rigid), undergo internal conformational changes. These motions cause fluctuations in the scattered electric field which in turn can be measured hv the techniques of optical mixing o r interfervmetrg. The Chemistry ot PhosphorusSuch experiments are made pusrible by the Environmental, Organic. Inorganic, advent oi the laser as a light sourre and thc Biochemical, and Spectroscopic Aspects development of spectrum analyzers or autocorrelators as detection devices. In systems J Emsley and Dennis H a l l , University of containing only small molecules these techLondon, King's College. Halsted Press, A niques in principle allow information to he Division of John Wiley and Sons, Inc., New obtained ahout the collective motion of York, New York, 1976. xi 563 pp. Figs. molrculrs. Topic 3 also usually considered in and tables 19 X 25.5 cm. $39.50 this field arp Doppler rhifted scattering. critical upal~srence,and ebctn,phoretic light Phosphorus chemistry has grown at an scattering. enormous rate since 1950 and this is the first
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