Recent Papers

Advances in the Field of Acoustics over the Last 15 Years

Photography of the Aurora Borealis

Modern Problems of Molecular Physics

Speech at the public meeting of the Council of the Moscow Scientific Institute on February 4, 1918.

Physical Institute of the Scientific Institute

Theory of the Magneton.

La Science française. Vols. I, II. Paris, 1915.

Die Kultur der Gegenwart

Application of the Photoelectric Element as a Receiving Device for Wireless Telegraphy

A New Determination of the Charge of the Electron and of the Constants Associated with It.

Precalculation of Certain Quantities Relating to Molecular Constants.

On the Shortest Sounds Perceived by the Ear.

A. Stefanini. How many vibrations are needed to recognize a sound? Il Nuovo Cimento (1911–1923), volume 13, pages 65–107 (1917).

Electrical Conductivity of Dielectrics.

On the Question of Mixed Systems of Hanging Rafters

This article criticizes the continued Russian reliance on traditional wooden hanging rafter systems, especially the Palladio type, arguing that their joints, deformations, and behavior under asymmetric loads make them poorly suited to modern construction. It surveys mixed timber and iron alternative…

On Small Oscillations of a Material System Near an Equilibrium Position

This article presents an exposition of the corrected Lagrangian theory of small oscillations of a material system near stable equilibrium, with explicit extension from holonomic to certain scleronomic nonholonomic systems. It argues that, for infinitesimal motions, linear differential constraints ma…

Brief Report on a Scientific Trip Abroad in the Summer of 1914

This report summarizes a 1914 scientific trip undertaken to examine European fuel testing stations, gas works, chemical schools, textile factories, exhibitions, and coke-oven installations. The author describes visits in Germany, Switzerland, and Alsace, comparing laboratory organization, analytical…

The Tomsk Meteorite: A Petrographic Study

This petrographic study describes a stony meteorite that fell near Tomsk in June 1912, based on a recovered fragment examined macroscopically, microscopically, and by reference to chemical composition. The author identifies the specimen as an intermediate chondrite, characterizing its chondrules, fi…

At the Placer Mines of the Kuznetsk Alatau

This report presents observations from a 1915 technical visit to gold mines and cyanide plants in the Kuznetsk Alatau, a region where lode gold mining and cyanidation were expanding despite wartime shortages of chemicals, zinc, and labor. It combines a brief history of local placer and lode producti…

Errors and Misprints Noticed in Volume XXXIX

The Goldfields Area of A. S. Antonov and O. P. Vishnevskaya in Orsk Uyezd, Orenburg Governorate

This article reports a 1912 geological examination of the gold placers and gold-bearing quartz veins of A. S. Antonov and O. P. Vishnevskaya near Kvarken stanitsa in Orsk Uyezd, a district previously described only fragmentarily in geological literature. Based on field survey, study of natural outcr…

Study of Gold-Bearing Ores in the Metallurgical Laboratory I of Tomsk Technological Institute

This article presents the methods used in Metallurgical Laboratory I of the Tomsk Technological Institute for preliminary laboratory investigation of gold-bearing ores, with emphasis on establishing technically and economically suitable treatment schemes before plant construction. It discusses sampl…

Report on the State and Activities of the Institute for 1914

This institutional report surveys the condition and activities of the Tomsk Technological Institute of Emperor Nicholas II during 1914. It documents the institute’s administrative structure, teaching and service personnel, departmental organization, staff appointments and dismissals, student aid, fi…

Results of the Determination of Magnetic Elements in the Barnaul and Biysk Districts in 1910

This paper reports magnetic measurements made in 1910 across stations in the Barnaul and Biysk districts, including locations in the Altai region. It presents a tabulated set of geographic coordinates together with magnetic declination, horizontal component, and inclination where determined. The res…

Results of the Magnetic Expedition to Mongolia in 1913

This report presents magnetic observations from the 1913 expedition to Mongolia, listing geographic coordinates, magnetic declination, and the horizontal component of the magnetic field for stations along a route from the Transbaikal region across Mongolia to the Altai and Barnaul area. The measurem…

O. W. Richardson. *The emission of electricity from hot body* (monographs of Physics) London, 1916. (304 pp.)

A.G. Doroshevsky (obituary)

Resonance Radiation of Sodium Vapor

Laws of Excitation by Ultraviolet Rays.

V. Voss. The ratio of the intensities of the D lines of sodium.

Does the sub-electron exist?

The Nature of the Northern Lights

Memoirs of Professor L. L. Tove and His Biography

This memorial collection recounts the suicide of Lev Lvovich Tove, professor of mining at the Tomsk Technological Institute, and reconstructs his career, teaching, and service to Siberian mining education. Through obituary notices and reminiscences by colleagues and students, it emphasizes his work …

Steam engine with intermediate steam extraction

This work investigates the operating process of tandem compound steam engines with intermediate steam extraction under changing extraction rates and machine loads. Using idealized assumptions, including dry saturated steam obeying Mariotte’s law and neglect of heat exchange, leakage, throttling, rad…

Results of the Yenisei Magnetic Expedition of 1912

This paper reports the results of the 1912 Yenisei magnetic expedition, presenting geomagnetic observations from a sequence of stations along the Yenisei region. The authors tabulate each station’s latitude and Greenwich longitude together with magnetic declination, horizontal component, and inclina…

Petrographic Study of Diabases in the Vicinity of Tomsk: With a Map

This paper presents a petrographic study of diabase outcrops near Tomsk, based on field collections from the Ushaika, Basandaika, and Tom River valleys and accompanied by mapped sampling localities. It describes the stratigraphic occurrence of numerous sheet-like and vein intrusions in Paleozoic cla…

On the Question of Stress Distribution in Granular Bodies

This paper examines the distribution of stresses and bearing resistance in granular bodies, treating sand as an elastic medium and comparing the resulting theory with Strohschneider’s experiments. Using Boussinesq’s solution for a loaded elastic half-space, the author integrates stresses beneath a u…

On the Calculation of Single-Phase Commutator Motors

This paper develops a calculation method for single-phase alternating-current commutator motors, emphasizing the limiting effect of the pulsation electromotive force in short-circuited coils during starting. Through a sequence of design formulas, it relates motor power, armature dimensions, magnetic…

Continuous Alcoholic Fermentation: An Experimental Study

This experimental study examines whether alcoholic fermentation, traditionally conducted as a periodic process, can be organized as a continuous operation and what effects such conditions have on yeast activity, fermentation progress, and product composition. The work contrasts the uneven course of …

The Kudara District of Northern Mongolia, Its Geological Structure and Gold-Bearing Conditions

This study presents the results of geological investigations in the Kudara placer district of northern Mongolia, based on field observations from the 1913 expedition led by M. A. Usov and laboratory study of a 370-specimen rock collection. It describes the district’s dissected taiga relief, graywack…

On Babits

This study examines the composition, structure, and practical performance of babbitt bearing alloys composed chiefly of lead, tin, antimony, zinc, and copper. It reviews phase relations and solidification behavior in relevant binary systems, then discusses experimental investigations of lead, tin, a…

Report on the State and Activities of the Institute for 1913

A Generalization of the Concept of the Properties of a Matrix Composed of Minors of Another Matrix

This paper extends the theory of compound matrices by defining a matrix whose entries are products of several minors of a given base matrix, formed from prescribed disjoint groups of rows and columns. Using elementary row and column transformations and reduction to normal form, it proves that such t…

On Two Properties of Related Determinants

This paper presents generalizations of V. L. Nekrasov’s results on related determinants, understood as minors selected from a common matrix. It gives a proof of the Capelli, Garbieri theorem that, for a matrix of rank p, related determinants of order p contained in one set of p rows or columns are p…

On the Problem of the Shear Resistance of Wood

On the Theory of the Iron-Carbon System

This study examines melting and solidification in iron-carbon alloys, with particular attention to how the instability of cementite at high temperatures complicates the equilibrium behavior predicted by phase-diagram theory. It reviews the phase diagram of the iron-carbon system, compares theoretica…

Theory of Repulsion Motors: Part II

This second part of Khrushchev’s theory of repulsion motors examines the Thomson motor, focusing on commutation, operating diagrams derived from experimental data, and comparison with tests. The paper qualitatively analyzes electromotive forces in a short-circuited coil, their dependence on flux dis…

Testing Steam Turbines: Conclusion

This concluding section of a treatise on steam turbine testing sets out practical rules for conducting trials and recording measurements. It argues that tests should begin only after the turbine has reached a thermally steady state, indicated by stable condensate measurements and casing temperatures…

On the Distribution of Stresses in Granular Bodies

Testing of Steam Turbines: Continuation

Preliminary Report on Botanical Work in Akmola Region in 1912 and 1913

This preliminary report surveys the history and gaps of botanical investigation in Akmola Oblast and presents results from fieldwork conducted in 1912 and 1913. Based on herbarium collecting, route observations, and attention to soils, water, climate, and plant communities, the study documents veget…

On a Property of Related Determinants

This note studies four “related” third order determinants formed cyclically from the columns of a three by four matrix. It proves that if two such determinants vanish and at least one of their common second order minors is nonzero, then the other two related determinants must also vanish, using expa…