Recent Papers

THE DOPPLER–FIZEAU PHENOMENON AND MOLECULAR MOTION

S. E. Khaikin, _Mechanics_. State Publishing House for Technical-Theoretical Literature, Moscow–Leningrad, 1947, price 17 rubles, print run 25,000.

ELECTRON PROJECTOR AS A METHOD OF PHYSICOCHEMICAL RESEARCH

Annotated Index No. 30 of Non-Periodical Literature on the Physical Sciences Published in the First Half of 1947\*

ANNOTATED INDEX No. 33 OF LITERATURE ON THE PHYSICAL SCIENCES PUBLISHED IN THE USSR IN JANUARY AND FEBRUARY 1948

ABSORPTION OF ULTRASONIC WAVES IN LIQUIDS

SEPARATION OF ISOTOPES IN LARGE QUANTITIES BY ELECTROMAGNETIC METHODS\*

Physical Foundations of Bird Navigation

S. V. Vonsovsky and Ya. S. Shur. Ferromagnetism, State Publishing House of Technical-Theoretical Literature, Moscow—Leningrad, 1948, 816 pp., price 38 rubles 50 kopecks, print run

Let us dwell on the contents of the book.

Session of the Department of Physical, Mathematical and Chemical Sciences of the Academy of Sciences of the Ukrainian SSR on Problems of Physics

From February 2 to 5 of this year, a session of the Division of Physical-Mathematical and Chemical Sciences of the Academy of Sciences of the Ukrainian SSR was held at the Kyiv Institute of Physics of the Academy of Sciences of the Ukrainian SSR.

The complete collected works of L. I. Mandelstam, being printed on the basis of a decree of the Government, will consist of 5 volumes. The first two volumes will contain all of L.

Annotated Index No. 34 of Literature on the Physical Sciences Published in the USSR in March 1948

THE FRANCK-CONDON PRINCIPLE AND RELATED ISSUES\*)

Study of the Density of the Upper Atmospheric Layers by Meteor Methods

NEW PHOTOGRAPH OF MESON DECAY IN A WILSON CLOUD CHAMBER\*

ANNOTATED INDEX No. 32 OF NON-PERIODICAL LITERATURE ON THE PHYSICAL SCIENCES PUBLISHED IN THE USSR IN THE FOURTH QUARTER OF 1947

Electromagnetic Radiation in Accelerators

We will devote our review to a new physical phenomenon specific to energies of $\sim$ 100 MeV. We refer to the phenomenon of electromagnetic radiation from fast relativistic electrons in betatron-type accelerators. It is interesting that, at the indicated energies, a significant part of the electron…

OBSERVATIONS ON THE TRACKS OF SLOW MESONS IN PHOTOGRAPHIC EMULSIONS*)

Part I of the present article describes track measurements and shows that they provide data supporting the existence of mesons with different masses. Part II presents additional data on meson production, making it possible to show that many of the observed mesons are generated locally in the “explos…

THE EVOLUTION OF THE DOCTRINE OF ENERGY

S. Inanananda. *High Vacuum.* 1947. D. Van Nostrand. N. Y.

Food Poisoning in the RSFSR in 1946

THE NUMBER OF VALENCE ELECTRONS AND THE STRUCTURE OF METALS AND INTERMETALLIC COMPOUNDS¹

In the Commission on the History of Physical and Mathematical Sciences

ATMOSPHERIC LUMINESCENCE

S. Yu. Lukyanov. Photoelements

EXPERIMENTS WITH MONOCHROMATIC SLOW NEUTRONS*)

In the Commission on the History of Physical and Mathematical Sciences of the USSR Academy of Sciences

On March 31, in Leningrad, under the chairmanship of Corresponding Member T. P. Kravets, the regular 34th meeting of the Commission on the History of the Physical and Mathematical Sciences of the Academy of Sciences of the USSR was held.

ARTIFICIAL PRODUCTION OF MESONS

VACUUM BRAZING OF METAL TO CERAMICS

H. Bethe. *Introduction to the Theory of the Atomic Nucleus*. (New York, 1947.)

VLADIMIR NIKOLAEVICH CHIKOLEV AND HIS OPTICAL RESEARCH

VIBRATIONAL SPECTRUM AND HEAT CAPACITY OF FACE-CENTERED CUBIC CRYSTALS *)

Annotated Index No. 31 of Non-Periodical Literature on the Physical Sciences, Published in the USSR in the Third Quarter of 1947

INTERATOMIC FORCES IN SOLID AND LIQUID BODIES

MEASUREMENTS OF PRESSURE AND TEMPERATURE IN THE UPPER LAYERS OF THE ATMOSPHERE

Polarized Luminescence

P. P. Lazarev. Energy, Its Sources on Earth and Its Origin

In the following chapter all the necessary data on protection against X-rays are collected.

The book begins with a very brief characterization of the atomic nucleus and nuclear processes (Chapter I, pp. 5–31). It goes without saying that on 26 pages, of which about 5 are

THEORY OF SUPERFLUIDITY OF HELIUM II

N. K. Adam. _Physics and Chemistry of Surfaces_, translated from the 3rd English edition (1941) by D. M. Tolstoy, edited by Prof. A. S. Akhmatov. State Publishing House of Technica

Determination of the Masses of Fragment Nuclei Emitting Delayed Neutrons

HIGH LAYERS OF THE EARTH’S ATMOSPHERE\*

Photographic Plates with Thick Emulsion Layers

INTERACTION OF NEUTRONS WITH NUCLEI

At the Commission on the History of Physical and Mathematical Sciences of the USSR Academy of Sciences

On January 13, 1948, a regular meeting of the Commission on the History of the Physical and Mathematical Sciences of the Academy of Sciences of the USSR was held.

Traveling-Wave Tube

Recently, information has appeared in the literature about a new microwave amplifier. Experiments have shown that this type of amplifier has a number of advantages compared with other microwave amplifiers used up to now. The operation of the new amplifier is based on an ingenious use of the interact…

DYNAMIC ELECTROMETER*)

Therefore, for the modern student the book will prove useful only as a reference on certain classical questions.