BOOK REVIEWS the presentntim of the ehapbers on Process V~rirtbles,ilolrculxr Units, Compositions of Mixtwcr and Solutions, P-V-T Relations fol. C>asw, llixtures of VBPOI.Sand Gascs, llntrrial Ealances, l3nerg.v Balances, Equilibrium in Chemical Systems, Combinrtl Matelid and I3nerg.v Balances. In this ~.wirwet.'sopinion, the aut,hars should h;tv? waited t o catch their second wind h ~ f w ethey rbtcmptcd to write the eheptws on dimcnsiond analvsis and economic mnsider,ztions. The presentat,im in thew Inst t,m-o chapters is not consistcnt rvith the thoroughness of the earlier chnptws. This hook should be accoptod by many instl.~ietorsfor use in tho first course in chemical engineering.
JOHN 3. MCKETTA Uniwsitl, of Tezas Austin
Semiconductors
Edited by N . B. Hannay, Bell Telephone Labomtories, i l t r r a y Hill, Xew Jcrsoy. ACS i f o m g r a p h Xo. 140. Reinhold Publishing Corp., New York, 1950. xriii 707 pp. Figs. 16 X 23.5 om. $15.
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To xttempt t o encompass the complete field of scmiconrlnctora in s single book is a monumental t,ask, but one which has been handlrtl mast effectively by editor Hannay and his nssorintes. Thc hook is written in review form with nn honest attempt t o describe the present ~itutntion. When there arc conHicting views which are not yet completely resolved, all aspects are given without bias, an extrem~lyvaluable method of presentation from the reader's viewpoint. The hihliography of over 1500 references is very complete and well compiled. The problem of presenting the suhject from a. rhemienl viewpoint is difficult, and i t is frequently impossible to separate the physics from the chemistry, particularl.~ since the technulogy of semiconductors has grown under t,hr tutelage of physics. This hook is not for the neophyt,e in the field. A sound hnckgraund in solid state physics, as well as a knowledge of thermodynsmirs and some metnllnrgy, is required to follow the complexities of the suhject. Few ehrmists exccpt those working with semironduetore r i l l feel a t home with the terminology. T h r slight lack of comelation between the varim~rchapters is unavoidable since most chnl,tcrs were written h v different authors. This hook will be x vnhable reference work for srientists working with semieonduct,ors; i t is most usrfnl in that i t dearly establishes the stntr~squo a t the time i t was n-rit,tea. I t would be rather unsatisfactory a? a textbook for a course in the subject,, lnlt i t would be invaluable as a referen~ework for the teacher. HONERF. PRIEST Ordnance Materials .??search Ofice Walerlmm, .Vo.~sarhasetls
Volume 36, Number 12, December 1959
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