BOOK NOTES
544
[J. F. I.
LIQUID SCINTILLATION COI.E~TIKG, edited by Carlos G. Bell, Jr. and F. Newton Hayes. 292 pages, diagrams, plates, 6 X 9 in. New York, Pergamon Press, Inc., 1958. Price, $10.00.
Tan THEORY AND I>)ESIC;K OF MAGNETIC ;~MPLIFIRRS, by E. H. Forest-Smith. 487 pages, diagrams, 53 X St in. New York, John \f’iley s( Sons, Inc., 1959. Price, $12.50.
This is the first volume ever published on It this technique of radiation measurement. covers all the advances in the field and includes a section on the chemistry of the With scintillation counters counting sample. being one of the most versatile and important instruments in modern nuclear research, this informative text on the subject will prove to be of immense value to nuclear physicists, physical chemists, electronic engineers, radio chemistsand those engaged in medical research.
This volume is the first of a series on Automation and Control Engineering. It gives an account of the theory of magnetic amplifiers and design methods to meet specific requirements which should prove valuable to the control engineer. In the various chapters, theoretical aspects are supplemented by short numerical examples and some complete designs are carried out. Some typical problems to which magnetic amplifiers have been applied successfully are also discussed.
ELECTRICAL ENGINEERING MATERIALS, by A. J. Dekker. 208 pages, diagrams, 6 X 9 in. New York, Prentice-Hall, Inc., 1959. Price, $8.00.
MAGNETIC AMPLIFIER ENGINEERING, by George M. Attura. 220 pages, diagrams, illustrations, 6 X 9 in. New York, McGraw-Hill Book Co., Inc., 1959. Price, $7.50.
In this new text,
the author
gives a clear,
working knowledge of the methods and models used to determine the properties of materials most important to the electrical engineer. Simple classical or semi-classical models are used throughout to help the reader develop insight into the physical mechanisms that underlie chapers
the
is possible netic
properties
are organized separately
or conductive
Supplemented
chapter.
and tables,
problems
at
the
The
concentration
on the dielectric, properties
with numerous
as well as graphs incorporates
of materials. so that
mag-
of materials. line drawings, the book also end
of each
This authoritative guide, presented in the language of the electronic circuit and systems engineer, presents the theory, operating principles and practical application of all types of magnetic amplifiers. Basic information is given on electric and magnetic variables describing their interrelation through the equations of Faraday and Oersted. Special topics not covered before in a work of this kind include: hybrid circuits, bi-directional output amplifier, volt-second analysis of saturable reactors, winding and test specifications for toroidal reactors and detailed mathematical analysis of the load action of the reactorrectifier amplifier.