• Publications
  • Influence
Temperature Radiation from the Quiet Sun in the Radio Spectrum
The radio-frequency emissivity of the sun considered as a black body is proportional toTλ-2 per unit frequency increment, where T is the temperature of the radiating region, and λ is the wave-length
Polarization of Solar Radio-frequency Emissions
THE recent experimental proof1 that the sun emits energy on radio frequencies was followed by evidence2 that the amount of such energy can increase markedly during the passage of important sunspots
Long-distance observations of radio waves of medium frequencies
The frequency-change technique of Appleton and Barnett has been applied to the analysis of the downcoming waves from a distant transmitter. The observations were carried out simultaneously at
The temperatures and constituents of the upper atmosphere
In a previous paper attention was drawn by one of us to the fact that the upper ionized, F, region of the ionosphere tended to reach a minimum height in the early morning. A study of the results of
The Normal F Region of the Ionosphere
  • D. Martyn
  • Physics
    Proceedings of the IRE
  • 1 February 1959
The global morphologies of the F1 and F2 regions at magnetically quiet times are reviewed, and attention also is given to the sunspot-cycle variations. The physical conditions, temperature, pressure,
The Lorentz “polarization”‐correction in the ionosphere
The authors discuss criticisms by Appleton, Farmer, and Ratcliffe, and by Booker and Berkner of their former conclusion that the Lorentz polarization-term is zero in the ionosphere. They advance
Temperature Radiation from the Quiet Sun in the Radio Spectrum
THE radio-frequency emissivity of the sun considered as black body is proportional to per unit frequency increment, where T is the temperature of the iadiating region, and X is the wave-length of the
Electric Conductivity of the Ionospheric D-Region
RECENTLY, Cowling and Borger1 have put forward theoretical reasons why the electric conductivity of the ionospheric D-region may be considerably less than that of the combined E-F-regions. On the
The Lorentz Polarization Term and the Earth's Magnetic Field in the Ionosphere
FOR some years, there has been doubt concerning the value of the accelerating force acting on an electron in the ionosphere under the influence of an electric wave. In 1929, Hartree1 gave reasons for
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