Albert Einstein

409

Description of the Electromagnetic Field by Means of Matrices

411

Capture of Electrons and Ionization by Protons in Hydrogen

415

Entropy in Quantum Statistics

426

Ranges of Protons in Medium and Heavy Elements

435

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

439

Absorption and Emission of Light by a Gray Substance

446

The Spectrum of Positronium in External Fields

452

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

463

Some Observations on Possible Formulations of the Theory of Extended Particles

467

Determination of the Transverse Relaxation Time of Nuclear Magnetic Moments

471

The Conditions for SelfExcitation of a Singing Flame

475

Rectangular Wilson Chamber with Bilateral Expansion

484

The Dynamical Theory of Electron Scattering in Crystals

488

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

491

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

500

The Effect of Electrical Fluctuations on a Vacuum Tube Oscillator

510

Statistical Problems of an Electron Multiplier

520

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

532

On the Theory of Crystal Growth

535

A Pulse Height Analyzer with an Electron Beam Tube

537

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

546

Some Notes on the Researches of S. G. Salikhov

552

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

556

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

557

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

560

Nuclear Fissions Associated with Heavy Unstable Particles

562

Determination of the Absolute Concentrations of Atoms in a MultiComponent ArcVapor

564

The Relativistic Mechanics of a Material Point of Variable Mass

565

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

567

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

568

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

570

On the Problem of the Negative πMeson Decays

571

Measurements of the Absolption Coefficient of High Energy Nuclear Interacting Particles

572

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

575

High Threshold Scintillation Neutron Detector

576

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

579

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

581

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

584

The Fission of Heavy Nuclei by Slow Mesons

585

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

587

The Scattering of Fast Neutrons by NonSpherical Nuclei II

588

The Scattering of Fast Neutrons by NonSpherical Nuclei I

591

The Possible β Decay of Hyperions and K Mesons

593

Multiple Meson Production at Energies of 1  2.2 Bev

594

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

596

The Formation of Charged πMesons by Nucleons

600

"Acoustic Excitations" in Superconductors

602

The Asymptote of Green's Function in Quantum Electrodynamics

604

The Optimum Length of an Undulator

606

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

607

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

608

The Excitation of Ultrasonic Vibrations by Ponderomotive Forces

609

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

610

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

611

The Yield and Angular Distribution of Photoneutrons of High Energy

613
