NOEME 30 95SINEADETSMNS

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December1945

Approx. 759 pages

5 5/8 by 8 5/8

Probable price $10.00

ELECTRON OPTICS

AND THE

ELECTRON MICROSCOPEBy V. K. Zworykin, G. A. Morton, E.Ramberg, J. Hillier, A. W. Vance; allRCA Laboratories, Princeton, N. J.

G.at

This comprehensive book covers the electron.microscope in all its phases. The material for thebook was chosen to fulfill a twofold purpose. The-first is to aid the present or prospective electronmicroscopist in understanding his instrument andin using it to greatest advantage; the second, to.present systematically the practical and theoreti-cal knowledge which must form the basis for furtherprogress in electron microscope design.

To this end the book has been divided into twolparts. The first part contains descriptions of vari-ous types of electron microscopes together with a

non-mathematical discussion of the electron opticaltheories on which the electron microscope is basedand the practical information necessary for its ef-fective operation. The second part presents a sur-vey of theoretical electron optics and employs.mathematics as liberally as a methodical develop-ment of the subject matter warrants. This treat-ment is intended to supplement the practical in-formation of the first part and may serve as a guidein electron optical design.

JO-HN WILEY & SONS, Inc., 440-4th Ave., New York 16, N. Y.

CONTENTS

Part I-PRACTICAL ELECTRONOPTICS AND ELECTRON MI-CROSCOPY * Electron Optics -Applications of Electron Optics SElectron Microscopes 0 ElectronOptics of High Magnification 0The Magnetic Electron Microscope* A berrations and Tolerances inthe Electron Microscope 0 ElectronMicroscope Power Supplies a Mat-nipulation of the Electron Micro-scope * The Electron Microscopeas a Research Instru'ment.Part II-THEORETICAL BASISOF ELECTRON OPTICS ANDTHE ELECTRON MICROSCOPE* Theoretical Basis of ElectronOptics * Determination of Poten-tial Distribution 0 Electron Tra-jectory Tracing * Gaussian Diop-trics of Electrostatic Lenses aMagnetic Fields * Electron Motionin Magnetic Fields and MagneticLenses S Aberrations of ElectronLenses * Magnitude and Correctionof Electron Lens Defects * High-Voltage Electron Optics-Ion Optics* Image Formation in the ElectronMicroscope.APPENDIX

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NOVEMBFa 30 1945 SCIENCE-ADVERTISEMENTS It

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HANDBOOK OF METEOROLOGYEdited by F. A. BERRY, JR., Captain, USN; E. BOLAY, Lieut. Comdr., USNR; and NORMANR. BEERS, Lieut., USNR. 1068 pages, 51 x 81, 730 illustrations. $7.50

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An authoritative and comprehensive treatment, giving the equipment, industrial radiography, medical applications,student a broad understanding of x-rays, their nature, x-ray diffraction and crystallography, electron diffraction,and the many purposes for which they may be used. The fluoroscopy, automatic inspection, microradiography, gembook deals with the generation, absorption, scattering, etc., coloration, etc.of x-rays, measurement and recording of x-rays, x-ray

GENERAL CHEMISTRYBY JOHN ARREND TIMM, Professor of Chemistry and Director of School of Science, SimmonsCollege. International Chemical Series. 691 pages, 51 x 81, 185 illustrations. $3.75

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HILL and KELLEY-ORvGANIC CHEMISTRY

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CURRENT PUBLICATIONS-PHYSICAL METHODS OF ORGANIC CHEMISTRY

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ORGANIC PREPARATIONSBy: CONRAD WEYGAND, Professor of Chemistry, University of Leipzig.1945 6 x 9 546 pages 12 illustrations $6.00This book is a translation of the preparative part of the German edition of ConradWeygand's "Organisch-Chemische Experimentierkunst" which has been authorizedby the Alien Property Custodian in the public interest.

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THE BECKMAN PHOTOELECTRIC

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The Beckman Photoelectric Quartz Spectrophotometer, since its introduction four years

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With the Model DU Beckman Spectrophot meter, measurements are readily made in therange 320 to 1000 millimicrons and, in conjunction with the Ultraviolet Accessory Set,measurements from 220 to 1000 miflimicrons. See, "A Quartz Photoelectric Spectro-photometer" by Cary and Beckman, Journal of the Optical Society of America, Vol.31, No. 11, November 1941, Page 682.

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