Recent Papers

ATOMIC THEORY AND MECHANICS[^1]

This article presents an account of a lecture delivered on August 30, 1925, at the Sixth Scandinavian Mathematical Congress in Copenhagen.

In Memory of A. A. Friedman

MAX PLANCK AND THE THEORY OF QUANTA[^1]

L'Atmosphere et la prevision du temps

Review: Rouch. L’Atmosphere et la prevision du temps.

THE THEORY OF ISOSTASY, ITS DEVELOPMENT AND RESULTS[^1]

The Doctrine of Energy

Review: Prof. N. V. Kashin. The Doctrine of Energy. An Introduction to Thermodynamics.

PROBLEMS AND METHODS OF VACUUM SPECTROSCOPY[^1]

THE PERIODIC SYSTEM OF CHEMICAL ELEMENTS IN LIGHT OF THE THEORY OF ATOMIC STRUCTURE[^1]

High-Frequency Cosmic Rays[^1]

Paper presented on November 9, 1925, at a meeting of the National Academy of Sciences in Washington.

MOLECULAR FORCES AND THEIR ELECTRIC NATURE¹

This article is a brief excerpt from the author’s book of the same title, prepared for publication. Since the range of phenomena in which the action of molecular forces is manifested is extremely broad, we must of necessity narrow our topic and will hereafter address questions that are, in one way o…

E. Grimsehl. Course of Physics, for Students, Teachers, and Self-Study

M. Born.** Problems of Atomic Dynamics.

Review: M. Born. Problems of Atomic Dynamics.

THE COMPTON EFFECT.

THE PROBLEM OF THE TRANSFORMATION OF HYDROGEN INTO HELIUM

Recently published results of experiments by the Berlin chemists Paneth and Peters compel physicists to return their attention to the problem of the possibility of transforming hydrogen into helium.

Gas Reactions and Adsorption on Surfaces According to Langmuir[^1]

Langmuir’s works on physicochemical processes in incandescent lamps, on the dissociation of hydrogen, and on electron emission concern primarily low pressures and therefore lead to very simple conceptions of the essence of the reaction.

Advances in the Transmission of Images over a Distance[^1]

Photochemical reactions in liquids and gases.** Discussion of the Faraday Society, October 1–2, 1925, in Oxford.

Review: Photochemical Reactions in Liquids and Gases.

NEW DATA FOR AND AGAINST THE THEORY OF RELATIVITY[^1]

Presented on 18/XI 1925 in Halle at a meeting of the Gauverein Sachsen-Thüringen-Schlesien of the German Physical Society.

Attempts at the Artificial Transmutation of Mercury into Gold

A New Method for Determining the Shape and Size of Ultramicroscopic Objects[^1]

Refraction of X-rays.

NATURAL AND ARTIFICIAL DECOMPOSITION OF ELEMENTS[^1]

Address delivered at the ceremonial celebration of the centenary of the Franklin Institute in Philadelphia.

On the Superconductivity of Metals[^1]

The Thirtieth Anniversary of Radio

On Svedberg's Ultracentrifuge

Analysis of Crystals and Atomic Forces

On the Chemical Mechanics of Reactions of Solid Substances[^1]

The subject of the present article is, on the one hand, the study of the mechanics of spatial changes in a solid substance and, on the other hand, the study of the question of whether these changes are the cause or the consequence of chemical reactions.

ZEEMAN EFFECT.

CHEMICAL BONDING AS A DYNAMIC PROBLEM[^1]

Lecture at the Congress of German Natural Scientists and Physicians in Innsbruck on September 26, 1924.

CRYSTAL PHYSICS AND ISSUES OF METALLURGY

MARINE UNDERWATER SIGNALING AND SOUND TRANSMISSION UNDERWATER[^1]

On the Anniversary of G. A. Lorentz

Experimental Verification of Bohr's Theory of Radiation

Spectral Formulas and Their Graphical Representation

New Experimental Confirmations of the Consequences of the General Theory of Relativity

NEW MAGNETIC ALLOYS

STUDY OF THE PROPERTIES OF THIN LAYERS USING X-RAYS[^1]

Lecture delivered at the Royal Institution of Great Britain on January 16 of this year.

The Nature of Optical and X-ray Doublets[^1]

A. **Sommerfeld.** *The Structure of the Atom and Spectra*, 4th ed.[^1]

Review: A. Sommerfeld. Atombau und Spektrallinien.

The second volume of the extraordinarily interesting planned series “Struktur der Materie,” edited by Born and Franck, was written by Born and bears the title Vorlesungen über Atom

Review: M. Born. On Atomic Mechanics.

Dayton Clarence Miller. *Study of Musical Sounds.

Book review: Dayton Clarence Miller. The Science of Musical Sounds.

REDUCTION OF STELLAR MASS DUE TO ENERGY RADIATION[^1]

Magnetism and the Structure of Atoms

Photoelectric Effect in Crystals.

E. Back and A. Landé. Zeemaneffekt und Multiplettstruktur der Spektrallinien. Berlin, J. Springer, 1925, pp. XII + 213.

Book review: E. Back and A. Landé. Zeeman Effect and Multiplet Structure of Spectral Lines.

WHY DOES THE SYSTEM OF CHEMICAL ELEMENTS HAVE PERIOD LENGTHS OF 2, 8, 8, 18, 18, 32?[^1]

DEFORMATION OF ELECTRON SHELLS AND ITS EFFECT ON THE PROPERTIES OF SALT-FORMING COMPOUNDS[^1]

The content of this article was reported on September 25, 1924, at the general meeting of the 88th Congress of German Natural Scientists and Physicians in Innsbruck, and on September 18, 1925, at the joint session of the sections of the 4th Mendeleev Congress in Moscow.

Development of Image Telegraphy Over the Last Decade[^1]

THE MAGNUS EFFECT AND THE WIND-POWERED SHIP[^1]

The article is an expanded version of the author’s report delivered at a meeting of the Göttingen Physical Society on November 17, 1924.

On the Motion and Measurement of Water