Recent Papers

MESONS OF COSMIC RADIATION NEAR SEA LEVEL

The Current State of the Theory of Superconductivity

N. N. Khlebnikov. Collection of Problems and Exercises for the Course on Electron Vacuum Devices. Edited by V. F. Vlasov. VKAS edition. Leningrad, 1948, 188 pp. Price not indicated

Generation of Mesons in Penetrating Cosmic Ray Showers

CHARGE DISTRIBUTION IN NUCLEAR FISSION

The contents of the book may be seen from its table of contents: I—Linear oscillatory systems and the method of electromechanical analogies; II—The sound field; III—Sound radiation

Book Review: V. V. Furduev. Electroacoustics.

REFLECTION AND REFRACTION OF SPHERICAL WAVES

APPLICATION OF NEUTRON DIFFRACTION TO THE STUDY OF THE STRUCTURE OF CRYSTALLINE SUBSTANCES

This article describes work on neutronography—a concise term for the application of neutron diffraction to the study of the structure of crystalline substances. The relevant sections examine the shortcomings of X-ray crystallography and substantiate the broad capabilities of neutron structural analy…

Effectiveness of Dust-Control Measures in Underground Work in the Krivoy Rog Basin

G. Tyagunov and A. Zhigarev. 1. Electronic Tubes (instructional charts), Gosenergoizdat, 1948, price 32 rubles. 2. Electronic Devices (instructional charts), Series II, Gosenergoiz

PHYSICAL EXPERIMENTS PERFORMED ON THE BETATRON AND SYNCHROTRON

At the Session of the Department of Physical, Mathematical and Chemical Sciences of the Academy of Sciences of the Ukrainian SSR

On June 20–23, 1949, a Session of the Division of Physical-Mathematical and Chemical Sciences of the Academy of Sciences of the Ukrainian SSR was held in Kyiv.

Study of the Spectrum of Electrons Produced in the Decay of Stopped Mesons Using a Wilson Chamber

ON A METHOD FOR MEASURING EFFECTIVE NEUTRON ABSORPTION CROSS SECTIONS

Concave Ultrasonic Transducers\*

Current State of the Art in Ionospheric Research

Size-Uniform Spherical Particles and Their Application in Electron Microscopy

MEASUREMENT OF ENERGY-LOSS RATES BY SLOW NUCLEI OF H$^1$, H$^2$, He$^4$, AND Li$^6$*)

ISOTOPE SHIFT IN THE URANIUM SPECTRUM

HEAVY NUCLEI IN THE COMPOSITION OF PRIMARY COSMIC RADIATION

Physical method for separation of nuclear isomers

A NEW RADIOACTIVE SERIES

OBSERVATION OF CLOUDS AND RAIN USING RADARS

Photography and Spectrography of the Night Sky in the Infrared Region of the Spectrum Using an Electron-Optical Converter

STUDY OF SLOW MESONS IN COSMIC RAYS*)

The book under review is an original work devoted to an exceptionally detailed exposition of one chapter of X-ray structural analysis. The author has limited himself in many respec

Book review: M. Burger. X-ray Crystallography

REPORTS ON THE HISTORY OF PHYSICS AT THE SESSION OF THE ACADEMY OF SCIENCES OF THE USSR

The latest session of the Academy of Sciences (January 5–11, 1949) was devoted to questions of the history of science. They were also reflected in the reports considered by the Department of Physical and Mathematical Sciences, to which two meetings were devoted.

LENIN AND THE PHILOSOPHICAL PROBLEMS OF MODERN PHYSICS*)

Spectrum of Electrons Produced in Meson Decay

SULFUR ISOTOPIC COMPOSITION IN METEORITES AND TERRESTRIAL OBJECTS

From the Atom to Atomic Energy

Book review: André Berthelot. From the Atom to Atomic Energy.

RADIOACTIVE ISOTOPES OF PHOSPHORUS

In this article, for individual radioactive phosphorus isotopes, we consider: (a) nuclear reactions leading to the formation of a given isotope, (b) methods for isolating radiophosphorus from various targets, (c) the dependence of radiophosphorus yield from the target on the energy of the bombarding…

APPLICATION OF PHOTOMULTIPLIERS IN SPECTRAL ANALYSIS

ON THE INFRARED RADIATION OF THE NIGHT SKY

Barium Titanate—A New Ferroelectric

PHOTOMETRIC PROPERTIES OF SELENIUM PHOTOCELLS WITH A BARRIER LAYER

THEORY OF FERROELECTRIC PHENOMENA

Design of Linear Accelerators

G. Herrmann and S. Wagener, _Oxide Cathode_. Translated from the German by engineer A. P. Ievlev, revised and supplemented by Candidate of Technical Sciences B. M. Tsarev. 508 pp.

Book Review: G. Herrmann and G. Wagener. Oxide Cathode.

^1) D. Ivanenko and A. Sokolov, DAN. 58, 1633, 1947. “Classical Field Theory,” Gostekhizdat, Moscow–Leningrad, 1949.

COMRADE STALIN—THE GREATEST SCHOLAR OF OUR EPOCH

Crystal Counters

The purpose of this review is to present a number of published facts about the operation of the first of these counters—the crystal counter.

ON A VICIOUS INTERPRETATION OF THE SECOND LAW OF THERMODYNAMICS

Book Review: N. V. Kashin. A Course in Physics for Teachers’ Institutes, Vol. I, Uchpedgiz, Moscow, 1948.

Its readers may be students—physicists or chemists—engineers, and teachers of physics.

Book review: W. Riezler. Introduction to Nuclear Physics.

A New Theory of the Origin of Primary Cosmic Rays

Awarding of the Stalin Prizes for 1948

On April 9 of this year, a resolution of the Council of Ministers of the USSR was published on the awarding of Stalin Prizes for outstanding scientific works, outstanding inventions, and fundamental improvements in production methods for 1948.

POLARIZATION OF AN ELECTRON BEAM DURING SCATTERING

PARTICLE GROWTH IN SMOKES AND CLOUDS AND SNOW FORMATION FROM SUPERCOOLED CLOUDS

A report presented at the National Academy of Sciences on November 17, 1947.

ARCHITECTURAL ACOUSTICS IN THE USSR

ABSORPTION OF ULTRASONIC WAVES BY SINGLE CRYSTALS