A Determination of the Speed of Light by the Resonant Cavity Method

1950 ◽  
Vol 80 (2) ◽  
pp. 298-298 ◽  
Author(s):  
Kees Bol
Keyword(s):  
Resonant Cavity ◽  
Cavity Method ◽  
Speed Of Light

Progress with a Determination of the Speed of Light

1972 ◽  
pp. 305-310
Author(s):  
T. G. Blaney ◽  
C. C. Bradley ◽  
G. J. Edwards ◽  
D. J. E. Knight
Keyword(s):  
Speed Of Light

Contactless Mass Determination of Arbitrarily Shaped Objects by Microwave Resonator Measurements

1994 ◽  
Vol 347 ◽  
Author(s):  
Andrzej W. Kraszewski ◽  
Stuart O. Nelson
Keyword(s):  
Uncertainty Analysis ◽  
Resonant Cavity ◽  
Microwave Resonator ◽  
Mass Determination ◽  
Microwave Resonant Cavity ◽  
Dielectric Objects ◽  
Better Than

ABSTRACTThe basis is presented for using a microwave resonant cavity as an effective “contactless balance”, providing information about the mass of dielectric objects inserted into the cavity. An uncertainty analysis presented in the paper confirms that the mass of small dielectric objects can be determined by this technique with an accuracy better than 4%.

The Optical Measurement of Lapse Rate *

1950 ◽  
Vol 31 (2) ◽  
pp. 51-55 ◽  
Author(s):  
Robert G. Fleagle
Keyword(s):  
Optical Measurement ◽  
Vertical Gradient ◽  
Lapse Rate ◽  
Speed Of Light ◽  
Indirect Methods ◽  
Reliable Determination ◽  
Air Density ◽  
Lapse Rates ◽  
The Relationship

The need for reliable determination of the temperature of the air very near the ground and the difficulties inherent in measurement of this quantity by the ordinary indirect methods are pointed out. It is suggested that the dependence of the speed of light on air density provides a convenient method for the determination of the temperature near the ground by direct measurement of the lapse rate, and evidence is given from other papers to show that this is feasible where the vertical gradient of humidity is not great. The relationship between apparent elevation and lapse rates of temperature and vapor pressure is derived, and the relationship is illustrated by the results of computations.

Numerical enhancements of the microwave resonant cavity method for plasma diagnostics

2019 ◽  
Vol 28 (10) ◽  
pp. 105007 ◽  
Author(s):  
J Faltýnek ◽  
V Kudrle ◽  
J Tesař ◽  
M Volfová ◽  
A Tálský
Keyword(s):  
Plasma Diagnostics ◽  
Resonant Cavity ◽  
Cavity Method ◽  
Microwave Resonant Cavity

scholarly journals Radar determination of the Astronomical Unit

1965 ◽  
Vol 21 ◽  
pp. 177-215
Author(s):  
Irwin Shapiro
Keyword(s):  
Time Delay ◽  
Astronomical Unit ◽  
Speed Of Light ◽  
Comprehensive Review ◽  
A Value ◽  
The Earth ◽  
Lincoln Laboratory ◽  
Data Yield ◽  
Shift Data

A comprehensive review is given of the Earth-Venus measurements made with the Lincoln Laboratory Millstone radar in 1959 and 1961. The time-delay and Doppler shift data yield a value for the Astronomical Unit of 499.0052 ± 0.001 light-sec. Using 299 792.5 km/s for the speed of light leads to an AU of 149 598 000 ± 300 km. With the radius of Earth taken as 6 378.15 km, the solar parallax then becomes 8″.79416 ± 0″.00002. This value is consistent with measurements made at various other laboratories to about one part in 105.

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