Recent Papers

Third All-Union Conference on Luminescence and the Application of Luminous Compositions

On June 15–20, 1951, the Third Conference on Luminescence and the Application of Phosphor Compositions took place in Moscow, convened by the Commission on Luminescence under the Division of Physical and Mathematical Sciences of the Academy of Sciences of the USSR. The conference was dedicated to the…

Determination of the Upper Bound of the Emission Time of Fission Neutrons

Comments on V. M. Lopukhin’s Article A New Type of Microwave Amplifier

The interest in the history of science and technology that has grown in recent years has given rise to the appearance of an extensive biographical literature.

EXPERIMENTAL VERIFICATION OF THE STATISTICAL THEORY OF NUCLEI

STABILIZATION OF ELECTRON CURRENT IN A MASS SPECTROMETER

DISCUSSION ON ISSUES OF PHOTOGRAPHIC RECORDING AND REPRODUCTION OF SOUND

From June 26 to 28, 1950, the regular plenary session of the Commission on Scientific Photography and Cinematography of the Academy of Sciences of the USSR was held in Leningrad, devoted to a scientific discussion on issues of photographic recording and reproduction of sound.

NEW EXPERIMENTAL DATA ON “DISLOCATIONS” IN METAL

RADIO-FREQUENCY MASS SPECTROMETER

> “1874. I consider this formula

TRANSFER AND MIGRATION OF ENERGY IN BIOCHEMICAL PROCESSES. I

ON THE INTENSITY AND SPECTRUM OF PRIMARY COSMIC RADIATION

DENSITY MEASUREMENTS IN A SUPERSONIC FLOW BY THE X-RAY ABSORPTION METHOD\*)

Photonuclear reactions with proton production

F. Seitz, _The Modern Theory of Solids_, translated from the English under the editorship of G. S. Zhdanov. Gostekhizdat, Moscow, 1950, price 36 rubles.

Properties of Nuclear-Active Particles in Atmospheric Showers of Cosmic Rays

New Developments in X-ray Focusing Techniques

Fission of Cu, Br, Ag, Sn, and Ba Nuclei

On the Origin of Cosmic Rays

Ultra-High-Pressure Lamps

Mikhail Petrovich Avenarius and the Kyiv School of Experimental Physics

Pulsed Mass Spectroscope*)

Wilson diffusion cloud chamber

99-Channel Amplitude Pulse Analyzer

THE NATURE OF THE NEUTRAL PARTICLE EMITTED IN $\pi$-MESON DECAY

Generation of Protons by High-Energy γ-Rays

COSMIC RAYS AND RADIO EMISSION OF THE GALAXY

USE OF WILSON CHAMBERS WITH PULSED ACCELERATORS

Over the past several years, Wilson chambers have been used in conjunction with pulsed accelerators. The purpose of this article is to discuss certain specialized techniques used under these conditions and to clarify the advantages and disadvantages they have in comparison with the conventional Wils…

At the General Meetings of the Academy of Sciences of the Ukrainian SSR and Its Division of Physical-Mathematical and Chemical Sciences

From May 17 to 23, general meetings of the Academy of Sciences of the Ukrainian SSR and all its divisions were held.

ON THE HISTORY OF THE LAW OF BLACKBODY RADIATION

STUDY OF THE STRUCTURE OF ATOMS IN CRYSTALS BY THE PROBE METHOD

FROM THE COUNCIL OF MINISTERS OF THE USSR AND THE CENTRAL COMMITTEE OF THE CPSU(b)

From the Council of Ministers of the USSR and the Central Committee of the All-Union Communist Party (Bolsheviks). Obituary.

PRODUCTION OF NEUTRAL MESONS IN THE CAPTURE OF $\pi^-$ MESONS IN HYDROGEN[^1]

EXPERIMENTAL DETERMINATION OF THE TRUE SHAPE OF A DIFFRACTION LINE IN A POLYCRYSTAL X-RAY DIFFRACTION PATTERN

SOME APPLICATIONS OF THE SECOND LAW OF THERMODYNAMICS TO ELECTRICAL FLUCTUATIONS

Conference on the Theory of Chemical Structure in Organic Chemistry

In June 1951, the Division of Chemical Sciences of the USSR Academy of Sciences convened a meeting in Moscow on the theory of chemical structure in organic chemistry.

CONVERSION OF FREQUENCY MODULATION INTO AMPLITUDE MODULATION USING A WAVEGUIDE *)

CRITIQUE OF THE IDEALIST UNDERSTANDING OF QUANTUM THEORY\*

Meson Production by $\gamma$ Quanta

HETEROCHROMATIC PHOTOMETRY WITHOUT BEAM SPLITTING

OBSERVATION OF MAGNETIC DOMAINS USING THE MAGNETO-OPTICAL EFFECT\*)

CONFERENCE ON THE MAIN PROBLEMS OF SCIENTIFIC PHOTOGRAPHY

From June 29 to July 4, 1951, the All-Union Conference on the Fundamental Problems of Scientific Photography was held in Odessa, convened by the Commission on Scientific Photography and Cinematography under the Division of Chemical Sciences of the Academy of Sciences of the USSR.

OPTICAL LOCATION

On the Theory of the Beryllium Nucleus

PROTON SYNCHROTRON

NUCLEAR DISINTEGRATIONS CAUSED BY COSMIC PARTICLES OF HIGH ENERGY\*)

High-Luminosity Monochromators for X-Rays by B. Ya. Pines

PROPAGATION OF ELASTIC WAVES IN NICKEL

DIELECTRIC PROPERTIES OF THE HUMAN BODY IN THE WAVELENGTH RANGE FROM 1 TO 10 cm*)

DMITRII SERGEEVICH ROZHDESTVENSKII