The Effect of Electrical Fluctuations on a Vacuum Tube Oscillator

509

Description of the Electromagnetic Field by Means of Matrices

524

Relativistically Invariant Equations for the Electron Which Take the Place of Dirac's System of Equations

530

Measurement of the Coefficients of Internal Conversion of γrays of Sr, In, In and V on the Electrons of the Atoms

541

Entropy in Quantum Statistics

547

Absorption and Emission of Light by a Gray Substance

559

The Conditions for SelfExcitation of a Singing Flame

567

Some Observations on Possible Formulations of the Theory of Extended Particles

579

Determination of the Transverse Relaxation Time of Nuclear Magnetic Moments

584

Capture of Electrons and Ionization by Protons in Hydrogen

589

Rectangular Wilson Chamber with Bilateral Expansion

603

Letters to the Editor 
The Effect of LunarTidal Oscillation of the Atmosphere on the Intensity of the Hard Component of Cosmic Rays

608

Variation of the Global Intensity of the Hard Component of Cosmic Rays During the Passage of Air Mass Fronts

610

The Contribution of Meteorological Changes in the Earth's Atmosphere to the Diurnal Effect in Cosmic Rays

614

Nuclear Fissions Associated with Heavy Unstable Particles

616

Measurements of the Absolption Coefficient of High Energy Nuclear Interacting Particles

618

On the Problem of the Negative πMeson Decays

620

High Threshold Scintillation Neutron Detector

621

Maximum Yield of Photoneutrons and a New Method of Determining the Integral CrossSection of (γ, n) Reactions for High Energy Photons

623

Possible Application of Pulsed Multiplier ImageConverters for Recording Tracks of Ionizing Particles in Luminescent Media

626

Determination of the Absolute Concentrations of Atoms in a MultiComponent ArcVapor

628

Hyperfine Structure of Paramagnetic Resonance in Copper Tutton Salts at Intermediate Fields

629

The Relativistic Mechanics of a Material Point of Variable Mass

631

The Representation of Green's Function in Quantum Electrodynamics in the Form of Continual Integrals

633

Gas Bubble Chamber  A Possible Recorder of the Elementary Act of Interaction of Ionizing Radiation with Matter

636


Albert Einstein

637

Interaction of Protons with Tritium and the Excited State of He^{4}

639

Ranges of Protons in Medium and Heavy Elements

651

The Yield of Fission and Star Formation Processes in the Capture of π^{}Mesons of U, Bi and W

655

The Spectrum of Positronium in External Fields

664

Statistical Problems of an Electron Multiplier

679

The Dynamical Theory of Electron Scattering in Crystals

695

A Pulse Height Analyzer with an Electron Beam Tube

699

Calculation of the Ultimate Thickness of an Emulsion Layer in the Investigation of Nuclear Processes by Means of the Photographic Method, II

706

Formation of Negative Hydrogen Ions in the Passage of Protons through Thin Metal Foils

711

Some Notes on the Researches of S. G. Salikhov

719

On the Theory of Crystal Growth

725

Letters to the Editor 
The Formation of Charged πMesons by Nucleons

727

The Fission of Uranium Nuclei Under the Action of Slow π^{}Mesons and High Energy Particles

729

The Fission of Heavy Nuclei by Slow Mesons

732

The Scattering of Fast Neutrons by NonSpherical Nuclei I

734

The Scattering of Fast Neutrons by NonSpherical Nuclei II

736

The Probability of Uranium Nuclear Fission by Its Absorption of Slow π^{}Mesons

739

The Possible β Decay of Hyperions and K Mesons

740

A Study of the Energy Levels of the Lithium Nucleus by the Method of Magnetic Analysis

741

Multiple Meson Production at Energies of 1  2.2 Bev

744

The Yield and Angular Distribution of Photoneutrons of High Energy

746

On the Paper "The Excitation Spectrum of a System of Many Particles"

749

The Asymptote of Green's Function in Quantum Electrodynamics

750

Deviations from Mayer's Scheme for Filling Nuclear Shells and the Interaction of Levels

753

"Acoustic Excitations" in Superconductors

754

The Optimum Length of an Undulator

760

Detection of the Polarization Beams of Fast Particles by Means of Nuclear Photoemulsions

761

The Fine Structure of the Spectrum of the Paramagnetic Resonance of the Ion Cr^{3+} in Chromium Corundum

762

The Radiation of CO_{2} in the Region of 15μ in an Electric Discharge

764
