Recent Papers

FISSION OF BISMUTH AND LEAD BY HIGH-ENERGY PARTICLES\*

EXPERIMENTAL STUDY OF THE BREMSSTRAHLUNG SPECTRUM

ELEMENTARY THEORY OF THE BOILER\*)

Our aim is to consider a chain reaction in a reactor in which fast neutrons are born as a result of fission.

New Data on the Neutral Meson

FINE STRUCTURE OF NUCLEAR MAGNETIC RESONANCE ABSORPTION

ARTIFICIAL $\pi$-MESONS

A NEW CHAPTER IN THE HISTORY OF SOVIET SCIENCE AND TECHNOLOGY\*

Winners of the Stalin Prize for 1949

A number of works in the fields of physics, astrophysics, physical chemistry, and technical physics were awarded the Stalin Prizes for 1949.

MAGNETIC PROPERTIES OF ALUMS AT TEMPERATURES BELOW 0.1°K

Frédéric Joliot-Curie—An Outstanding Scientist, an Ardent Fighter for Peace

ELEMENTARY PARTICLES AND FIELD

Publishing House of the Academy of Sciences of the USSR, Moscow–Leningrad, 1949, 112 pp., price 5 rubles 50 kopecks.

INDEX OF ARTICLES PUBLISHED IN *USPEKHI FIZICHESKIKH NAUK*, VOLUMES XXXI–XL*)

On the Nature of the Variable Component of Radio Emission from Discrete Sources

Internal Conversion of $\gamma$-Rays and Determination of the Quantum Characteristics of Nuclear Levels

A NEW METHOD FOR STUDYING RELAXATION PROCESSES AND ITS APPLICATION TO THE STUDY OF SOME PHYSICAL PHENOMENA

FAST NEUTRON RECORDER

INTRODUCTION OF LOCAL CONDUCTIVITY CENTERS (LEVELS) IN SEMICONDUCTORS BY NUCLEAR BOMBARDMENT

PHENOMENON OF CAPTURE OF AN \(L_1\)-ELECTRON BY THE NUCLEUS

EMISSION OF DELAYED NEUTRONS BY THE ISOTOPE N$^{17}$

Physics Books Published in the First Quarter of 1950

On the Question of a Unified Field Theory*)

Conference on Scientific and Technical Applications of Photography and Cinematography

The Commission on Scientific Photography and Cinematography of the Academy of Sciences of the USSR organized a conference on the scientific and technical applications of photography and cinematography, which was held in Moscow on December 14–16, 1949.

Current State of the Theory of Superconductivity\*

Determination of the Charge of Heavy Particles Formed During Explosive Fission of the Nucleus

SIMULTANEITY IN THE COMPTON EFFECT

At the Session of the Division of Physical-Mathematical and Chemical Sciences of the Academy of Sciences of the Ukrainian SSR

The session, held in Kyiv from April 25 to 28, 1950, was devoted to issues of physics, geology, and astronomy.

STUDY OF STOPPED $\mu$-MESONS BY THE CRYSTAL COUNTER METHOD*)

ALEXANDER LVOVICH GERSHUN (On the Thirty-Fifth Anniversary of His Death)

NEW BOOKS ON PHYSICS

THE DISCOVERY OF THE CONNECTION BETWEEN ELECTRICAL AND MAGNETIC PHENOMENA BY I. A. DVIGUBSKY

THE NATURE OF COSMIC RADIATION *)

Report at the Annual Meeting of the Academy of Sciences of the USSR on February 2, 1950.

MESONS PRODUCED IN A CYCLOTRON\*)

OBSERVATION OF THE SPIN ANGULAR MOMENTUM OF CENTIMETER WAVES

Nuclear Fissions Induced by High-Energy Cosmic Particles

Determination of the age of materials of biological origin by C$^{14}$ content

TABLE OF ATOMIC NUCLEI

In view of the fact that tables of nuclear constants published in handbooks become outdated relatively quickly, it seems expedient to publish new data periodically. Owing to the limited space in the journal, the present table cannot duplicate large reference monographs in which a complete bibliograp…

REFRACTOMETER AND REFRACTOMETRIC METHODS OF RESEARCH IN THE WORKS OF M. V. LOMONOSOV

LOW-LIGHT-LOSS INTERFERENCE POLARIZER

Radio Emission of Auroras at a Frequency of 3000 MHz

SLOW MESONS IN THE ATMOSPHERE

NEW BOOKS ON PHYSICS

ABSOLUTE YIELD OF PHOTONEUTRONS FROM VARIOUS ELEMENTS

New Data on the Composition and Temperature of the Upper Layers of the Atmosphere

Application of Radioactive Isotopes to the Study of Diffusion in Solids

Rapid Method for Detecting Small Amounts of Air Pollutants

A NEW METHOD FOR OBSERVING ELECTRIC AND MAGNETIC FIELDS

Observations of the Solar Corona Outside Eclipse

THE WORKS OF P. N. LEBEDEV ON LIGHT PRESSURE

On the Question of Total Reflection of Waves