Recent Papers

PROBLEMS OF METAL FRACTURE\*

The strength or hardness of our modern metals cannot be increased by known methods without imparting brittle properties to the metals. A practical increase in strength can therefore be achieved only as a result of clarifying the problems of metal fracture. Many questions concerning the dynamics of c…

The First Russian Book on Occupational Hygiene

January Session of the Division of Physical and Mathematical Sciences of the USSR Academy of Sciences

The regular session of the Division of Physical and Mathematical Sciences of the Academy of Sciences of the USSR, held on January 23, 1947, was devoted entirely to new data obtained during 1946 concerning the composition of cosmic radiation.

I. Dosse and G. Mierdel.** *Electric Current in Vacuum and in Gases.* 2nd ed., 1945, 358 pp., 184 figs.

Works by USSR Scientists on Ferromagnetism

RADIO EMISSION OF THE SUN AND THE GALAXY

NEW METHODS IN MICROSCOPY

Physical Methods in Organic Chemistry

Organization of Soviet Physics

Names and Chemical Symbols of the Elements with Atomic Numbers 43, 85, 87, 95, and 96

Multiple nuclear disintegrations (“stars”) induced by 100 MeV X-rays

Experimental Methods for Studying Fast Relaxation Processes

FRAGMENTS FORMED IN THE FISSION OF URANIUM NUCLEI

Tables containing the characteristics of fragments formed in the fission of uranium nuclei were published in the journals “Journal of the American Chemical Society”, 68, 2411 (1946) and “Reviews of Modern Physics”. The tables were compiled by J. Siegel. They are dated June 1, 1916. The tables contai…

ON THE THIRTIETH ANNIVERSARY OF SOVIET PHYSICS\*

A NEW ISOTOPE OF URANIUM

Soviet Electronics over 30 Years

Nuclear Induction

PRODUCTION OF LOW-ENERGY NEUTRONS BY FILTRATION THROUGH GRAPHITE\*)

Emission of Light Charged Particles in Uranium Fission

Soviet Radiophysics over 30 Years

Experiments on the Decay of Negative Mesons

G. R. Noakes, A Text-book of Heat. Mac Millan, London, 1946, pp. 469.

Henry Semat, Introduction to Atomic Physics, Revised and Enlarged, Pp. XI + 412—Reinhardt and Comp. Inc. New York, 1946.

ATOMIC RADII AND INTERATOMIC DISTANCES IN METALS **)

Evolution of the Concept of Resonance *)

A report prepared at the proposal of the Presidium of the Academy of Sciences for a planned trip to Romania in the spring of 1946 at the invitation of the Romanian Academy of Sciences, the Iași Polytechnic Institute, and the Romanian Telephone Society.

Radio Spectroscopy of Molecules

LIMITS OF APPLICABILITY OF SOME APPROXIMATE METHODS USED IN ARCHITECTURAL ACOUSTICS

Finally, the last chapter treats the question of connecting a coaxial line to a waveguide in order to excite the latter.

Giant cyclotron with a modulated section (phasotron)

DECAY OF NEGATIVE MESOTRONS IN MATTER *)

ON THE SUPERCONDUCTIVITY OF SOLUTIONS OF SODIUM IN AMMONIA *)

NEW DATA ON THE MAGNETIC MOMENT OF THE DEUTERON

X-ray Structural Analysis and X-ray Spectroscopy over 30 Years

Formation of Cellular Structures in Layers of Liquid or Gas

A NEW TYPE OF NUCLEAR REACTIONS OBSERVED IN PHOTOEMULSIONS

Some Studies in the Field of Nonlinear Oscillations Conducted in the USSR Since 1935

MOLECULAR BEAM TECHNIQUE*)

In Memory of Nikolai Dmitrievich Papalexi

INTRODUCTION TO THE THEORY OF ELEMENTARY PARTICLES\*

Investigation of Nuclear Spallation in Cosmic Rays Using Photographic Plates

Cesium Lamp

THE MAGNETIC FIELD OF ROTATING MASSIVE BODIES\*

Presented on May 15, 1947, at the Royal Society in London.

The bibliography contains only Dutch works.

On the Theory of the Fine Structure of X-ray Absorption Spectra of Solids

THE MESON PROBLEM AND THE CURRENT STATE OF THE THEORY OF COSMIC RAYS\*)

This article is an introduction to the collection “Meson,” published by Gostekhizdat and written by members of the Theoretical Department of FIAN.

Theoretical Physics in the USSR over 30 Years

FISSION OF URANIUM NUCLEI INTO THREE AND FOUR FRAGMENTS

Review of the Latest Theories of Nucleon Interactions\*

A NEW METHOD OF INFRARED PHOTOGRAPHY

THE ULTRAVIOLET SPECTRUM OF THE SUN, OBTAINED FROM ALTITUDES UP TO 88 KILOMETERS