Volume 11, Issue 3-4

July - September 1939

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Foreword

Rev. Mod. Phys. 11, 122 (1939) - Published 1 July, 1939

The Absolute Value of Cosmic-Ray Ionization at Sea Level in Different Gases

J. Clay

Rev. Mod. Phys. 11, 123 (1939) - Published 1 July, 1939

The Intensity of Cosmic Radiation under Thick Layers

J. Clay

Rev. Mod. Phys. 11, 128 (1939) - Published 1 July, 1939

Cosmic Rays on the Pacific Ocean

A. H. Compton and P. S. Gill

Rev. Mod. Phys. 11, 136 (1939) - Published 1 July, 1939

Stable Periodic Orbits in the Theory of Primary Cosmic Radiation

Alfredo Baños, Jr., Héctor Uribe, and Jaime Lifshitz

Rev. Mod. Phys. 11, 137 (1939) - Published 1 July, 1939

On the Fine Structure Pattern of Directional Cosmic-Ray Intensity

E. J. Schremp and H. S. Ribner

Rev. Mod. Phys. 11, 149 (1939) - Published 1 July, 1939

The significance of variations in cosmic-ray intensity and their relation to solar, earthmagnetic and atmospheric phenomena

Victor F. Hess

Rev. Mod. Phys. 11, 153 (1939) - Published 1 July, 1939

Variations of Cosmic-Ray Intensity with Variation of Barometric Pressure and Temperature at Sea Level

J. Clay and E. M. Bruins

Rev. Mod. Phys. 11, 158 (1939) - Published 1 July, 1939

Present Status of Solar and Sidereal Time Variation of Cosmic Rays

E. O. Wollan

Rev. Mod. Phys. 11, 160 (1939) - Published 1 July, 1939

Seasonal cosmic-ray effects at sea level

R. A. Millikan, H. V. Neher, and D. O. Smith

Rev. Mod. Phys. 11, 166 (1939) - Published 1 July, 1939

Seasonal Studies at High Altitudes

William P. Jesse

Rev. Mod. Phys. 11, 167 (1939) - Published 1 July, 1939

World-Wide Changes in Cosmic-Ray Intensity

S. E. Forbush

Rev. Mod. Phys. 11, 168 (1939) - Published 1 July, 1939

Recurrence phenomena in cosmic-ray intensity

A. T. Monk and A. H. Compton

Rev. Mod. Phys. 11, 173 (1939) - Published 1 July, 1939

A Theory of World-Wide Periodic Variations of the Intensity of Cosmic Radiation

M. S. Vallarta and O. Godart

Rev. Mod. Phys. 11, 180 (1939) - Published 1 July, 1939

Discussion

Rev. Mod. Phys. 11, 189 (1939) - Published 1 July, 1939

Nature of Cosmic-Ray Particles

Seth H. Neddermeyer and Carl D. Anderson

Rev. Mod. Phys. 11, 191 (1939) - Published 1 July, 1939

Evidence that protons are the primary particles of the hard component

Thomas H. Johnson

Rev. Mod. Phys. 11, 208 (1939) - Published 1 July, 1939

Recent Studies at High Elevations

S. A. Korff

Rev. Mod. Phys. 11, 211 (1939) - Published 1 July, 1939

Discussion

Rev. Mod. Phys. 11, 220 (1939) - Published 1 July, 1939

The Specific Ionization of High Speed Particles

Robert B. Brode

Rev. Mod. Phys. 11, 222 (1939) - Published 1 July, 1939

Nature of Cosmic Rays Below Ground

Volney C. Wilson

Rev. Mod. Phys. 11, 230 (1939) - Published 1 July, 1939

Discussion

Rev. Mod. Phys. 11, 231 (1939) - Published 1 July, 1939

Analysis of deep rays

Pierre Auger and Thérèse Grivet

Rev. Mod. Phys. 11, 232 (1939) - Published 1 July, 1939

Energy Distribution and Positive Excess of Mesotrons

Haydn Jones

Rev. Mod. Phys. 11, 235 (1939) - Published 1 July, 1939

The determination of the energy spectrum of primary cosmic rays

M. S. Vallarta

Rev. Mod. Phys. 11, 239 (1939) - Published 1 July, 1939

On the Theory of Explosion Showers in Cosmic Rays.

W. Heisenberg

Rev. Mod. Phys. 11, 241 (1939) - Published 1 July, 1939

Showers Produced by Penetrating Rays and Allied Phenomena

W. F. G. Swann

Rev. Mod. Phys. 11, 242 (1939) - Published 1 July, 1939

The Behavior of High Energy Electrons in the Cosmic Radiation

C. G. Montgomery and D. D. Montgomery

Rev. Mod. Phys. 11, 255 (1939) - Published 1 July, 1939

Discussion

Rev. Mod. Phys. 11, 264 (1939) - Published 1 July, 1939

Burst Frequency as a Function of Energy

Marcel Schein and Piara S. Gill

Rev. Mod. Phys. 11, 267 (1939) - Published 1 July, 1939

Some Recent Experiments on Cosmic Rays

P. M. S. Blackett and B. Rossi

Rev. Mod. Phys. 11, 277 (1939) - Published 1 July, 1939

Discussion

Rev. Mod. Phys. 11, 281 (1939) - Published 1 July, 1939

Narrow Cosmic-Ray Showers

W. Bothe

Rev. Mod. Phys. 11, 282 (1939) - Published 1 July, 1939

Discussion

Rev. Mod. Phys. 11, 287 (1939) - Published 1 July, 1939

Extensive Cosmic-Ray Showers

Pierre Auger, P. Ehrenfest, R. Maze, J. Daudin, and Robley A. Fréon

Rev. Mod. Phys. 11, 288 (1939) - Published 1 July, 1939

Mesotron Production in the Atmosphere

Marcel Schein and Volney C. Wilson

Rev. Mod. Phys. 11, 292 (1939) - Published 1 July, 1939

The Disintegration of Mesotrons

Bruno Rossi

Rev. Mod. Phys. 11, 296 (1939) - Published 1 July, 1939