The velocity of propagation of electromagnetic waves derived from the resonant frequencies of a cylindrical cavity resonator

@article{Essen1950TheVO,
  title={The velocity of propagation of electromagnetic waves derived from the resonant frequencies of a cylindrical cavity resonator},
  author={Louis Essen},
  journal={Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences},
  year={1950},
  volume={204},
  pages={260 - 277}
}
  • L. Essen
  • Published 7 December 1950
  • Physics
  • Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences
The cavity resonator used in this investigation is a silver-plated steel cylinder 6.5 cm. in diameter and of adjustable length. Resonance in the H011 mode is established at a frequency in the region of 9000 Mc./sec., and the length is then varied to give successive resonances at half wave-length intervals. The wave-length is thus determined and this, together with the frequency, the diameter and a correction term involving the sharpness of resonance, enables the velocity to be calculated. This… 
Proposed use of a cylindrical surface wave resonator for the determination of the velocity of short electromagnetic waves
It is proposed to set up a surface wave resonator consisting of a length of smooth bare wire acting as the guide and short-circuited at both ends by large flat conducting plates mounted at right
Measurement Methods and Instruments for Microwave Frequencies
Microwaves are one form of electromagnetic radiation — that is, a wave motion associated with electric and magnetic fields — the known spectrum of which is shown in Fig. 1. Here, frequency is plotted
Interferometric Method of Velocity of Light Measurement
An association of interferometric methods in the 3.2-cm microwave and visible-light optical domains is now being used for the measurement of the velocity of light in terms of primary atomic
Reflectors for a Microwave Fabry-Perot Interferometer
The advantages of microwave interferometers for wavelength and other measurements at millimeter wavelengths are indicated, and a microwave Fabry-Perot interferometer discussed in detail. Analogous to
RF measurements of the speed of light
Modern RF measurements of the speed of light are reviewed, with emphasis on those methods capable of attaining an accuracy of 1.0 km/s or better. The geodimeter and microwave interferometer methods
Discussion of “Can The velocity of propagation of radio waves be measured by shoran?”
Aslakson's paper which deals with the velocity of radio waves, assumes that the velocity of light and the velocity of propagation of radio waves are theoretically identical in vacuo. This is the
Laser wavelength measurements and the speed of light
Early determinations of the speed of light, based on astronomical observations or terrestrial time-of-flight experiments, were largely superseded in the 1940's by measurements of the frequency and
Instruments for use in the microwave band
The paper describes the instruments used in the microwave band for the measurement of power, frequency and impedance; the majority of them use waveguide methods of transmission, but coaxial systems
Measurement of the speed of light I. Introduction and frequency measurement of a carbon dioxide laser
This, and part II following, describe a determination of the speed of light made by measuring the frequency and wavelength of radiation from a CO2 laser. This laser was operated on the 9.3 μm R(12)
REVIEW ARTICLE: Lasers from the standards laboratory to the factory floor
The lasers used as national and international standards of length and wavelength are complex mechanical/electro-optical instruments with medium term stability and reproducibility approaching 1 part
...
...

References

SHOWING 1-6 OF 6 REFERENCES
The Design, Calibration and Performance of Resonance Wavemeters for Frequencies between 1 000 and 25 000 Mc/s
The theory and practice of the design of wavemeters for use at frequencies between 1,000 and 25,000 Mc/s are discussed. The method of calibrating the wavemeters in terms of a standard of frequency is
Velocity of Electromagnetic Waves
THE recent applications of radar instruments to geodetic surveying have given great impetus to attempts to determine the velocity of propagation of ultra-high-frequency radio waves. In the United
Accurate measurement of the group velocity of radio waves in the atmosphere, using radar technique
Measurements of the velocity of propagation of pulses of radio waves through the atmosphere using techniques developed for accurate radio aids to navigation are described. The time of travel of
Present trends in physical medicine.