## Reviews and quantum mechanics. Other subjects considered are a possible variation of the universal constant of gravitation G with time and the effect of such a variation on astronomy and geophysics. Gravitational waves are also discussed extensively as well as the concept of critical masses as r
Design of space powerplants: by D. B. MacKay. 332 pages, diagrams, 6 × 9 in. Englewood Cliffs, N. J., Prentice-Hall, Inc., 1963. Price, $15.00
✍ Scribed by H.L. Bloom
- Publisher
- Elsevier Science
- Year
- 1964
- Tongue
- English
- Weight
- 251 KB
- Volume
- 278
- Category
- Article
- ISSN
- 0016-0032
No coin nor oath required. For personal study only.
✦ Synopsis
Book
Reviews
Thorkildsen, says surprisingly little about the mechanical behavior of plastics, concentrating primarily on metals, which-being purely elastic rather than viscoelastic bodies-are so typical of plastics. In fact, a major weakness of the book is the poor treatment of the subject of rheology, so important to the engineer and the designer. Chapter 6, "Thermal Stability," by G. F. L. Ehlers, peculiarly combines melting and decomposition phenomena, and is not up-to-date. But Chapter 7, "Electrical Properties," by K. N. Mathes, though reIatively Iong, is an excellent, readable review of a subject that is not adequately covered elsewhere in the polymer literature.
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## BOOK NOTES 339 the main impetus to investigating random vibration has been rocket-boosted vehicles-missiles, satellites, and spacecraft. RUTHERFORD AT MANCHESTER, edited by J. B. Birks. 363 pages, diagrams, plates, 6 )< 8½ in. New York, W. A. Benjamin, Inc., 1963.
Newton would never have found such obvious satisfaction in solemnly confuting Descartes by arguments which, if not exactly trivial, are certainly laboured. One might well guess that this was an essay written by a young student who had recently been introduced both to the science of hydrostatics and