Recent Papers

W. Gerlach. Die experimentellen Grundlagen der Quantentheorie

Experimental confirmation of the Lorentz–Einstein formulas

Wavelength of Hard $\gamma$-Rays

New Methods for Generating Short Undamped Electromagnetic Waves.

On a Method of Spectral Analysis by Means of X-rays

On the Kursk Magnetic Anomaly Based on the Studies of 1921[^1]

Physics and Crystallography

Magnetic Susceptibility

Artificial Decomposition of Light Elements

Excitation of Mercury Vapor by Electron Impact.

L. Chugaev.

Victor Henri. Study of the Absorption of Ultraviolet and Infrared Rays in Relation to the Structure of Molecules

[^1]: Substances act (upon one another) only in the dissolved state.

V. S. Syrokomsky. Application of Rare Elements in Industry

On scattered rays in the phenomenon of X-ray diffraction

The Electrical Nature of Molecular Forces in Crystals

N. Bohr. Papers on Atomic Structure from the Years 1913–1916

Absorption of Luminous Mercury Vapors

Composition of Nickel

The Number of Dispersion Electrons According to Quantum Theory

Physics as a Geometric Necessity

Address to the Philosophical Society of the University of Vienna.

Production of Radium Salts in Russia

Elected: V. A. Henri—as professor of physical chemistry at the Zurich Polytechnic; P. S. Epstein—as professor of theoretical physics at the California Institute of Technology in Pa

At the same time, “Walden inversion” is also an extraordinarily rich source for speculative thought.

Dispersion and absorption of water and ethyl alcohol in the region of short electric waves

Proceedings of the Institute of Physico-Chemical Analysis edited by N. S. Kurnakov and B. N. Menshutkin

On the Series Spectra of Elements

A report presented on April 27, 1920, at a meeting of the German Physical Society in Berlin.

The Phenomenon of Polarization in an X-ray Tube

Methods for Achieving High Vacuum

The purpose of this article is to provide an overview of methods for achieving high vacuum that are currently used in both scientific and technical practice.

Graphical Calculation of Mine Hoisting Machines

This paper develops and applies a graphical and analytical method for calculating mine hoisting machines and comparing alternative hoisting systems. After surveying cylindrical and conical drums, bobbins, Koepe pulleys, and less common arrangements, it sets common output, depth, load, rope, and spee…

Copper Smelting Plants in the Yenisei Governorate: Report on a Summer Field Trip in 1914

This report describes a 1914 field visit to the Yuliya and Ulen copper-smelting plants in the Yenisei Province, emphasizing operations that the author regarded as little documented in existing literature. It surveys the geological setting and ore character of the Yuliya deposit, gives production and…

Materials on the Testing of Building Stones of Western Siberia: Based on Data from the Mechanical Laboratory of the Tomsk Technological Institute

This paper presents results from more than fifteen years of mechanical testing of Western Siberian building stones at the Mechanical Laboratory of the Tomsk Technological Institute, motivated by the growing need for reliable local stone materials for railways, roads, paving, and other construction. …

On the Hypothesis of Light Quanta

The Basic Element of a Crystal

Magnetic Spectrum of β-Rays Excited by γ-Rays

The Fundamental Psychophysical Law and Its Modern Formulation

Report at the annual meeting of the Institute of Biological Physics on December 17, 1920.

Deflection of Light in the Gravitational Field of the Sun (Results of the English Expeditions to Observe the Solar Eclipse of 1919)

Orientation of Atoms in a Crystal

Keith Lucas. The Conduction of the Nervous Impulses

Damping of Molecular Vibrations and Elementary Radiation

Arrangement of Electrons in Atoms and Molecules.

The Role of Valence in the Electrocoagulation of Colloids

The Discovery of Electromagnetism Made in 1820 by J. C. Oersted

Continuous ultraviolet spectrum

Relative Activity of Radium and Uranium

Extension of the Ultraviolet Spectrum Toward Shorter Wavelengths

P. P. Lazarev.* **Current Problems in Biological Physics.** Moscow, 1920.

Bohr's Principle of Analogy in Quantum Theory

On the Influence of a Magnetic Field on Photoelectric Phenomena

Einstein’s General Principle of Relativity

Owing to its brevity, the present article cannot lay claim to even a remotely exhaustive explanation of Einstein’s theory. Its aim is to elucidate Einstein’s principal fundamental propositions and to apply them to the solution of two or three comparatively simple questions, such as, for example, the…