An Experimental Determination of the Velocity of Sound in Dry CO2-Free Air and Methane at Temperatures below the Ice Point

1945 ◽  
Vol 67 (9-10) ◽  
pp. 298-303 ◽  
Author(s):  
Thomas Harold Quigley
Keyword(s):  
Experimental Determination ◽  
Velocity Of Sound ◽  
Free Air

III. An experimental determination of the velocity of sound

1872 ◽  
Vol 20 (130-138) ◽  
pp. 34-35
Keyword(s):  
Experimental Determination ◽  
Cape Town ◽  
The Other ◽  
Velocity Of Sound ◽  
Successful Operation ◽  
Single Wire ◽  
Galvanic Current ◽  
Royal Observatory ◽  
Port Elizabeth

A galvanic current passes from the batteries at the Royal Observatory, Cape Town, at 1 o’clock, and discharges a gun at the Castle, and through relays drops a time-ball at Port Elizabeth. It appeared to the author that a valuable determination of the velocity of sound might be obtained by measuring upon the chronograph of the Observatory the interval between the time of the sound reaching some point near the gun and that of its arrival at the Observatory. As there is only a single wire between the Observatory and Cape Town, some little difficulty was experienced in making the necessary arrangements, without any interference with the 1 o’clock current to Port Elizabeth; but this difficulty was overcome by a plan which the author describes, and which was brought into successful operation on Feb. 27, 1871. The experiments could not have been carried out, on account of the encroachment they would have made on the time of the Observatory staff, had it not been for the assistance of J. Den, Esq., the acting manager of the Cape Telegraph Company, to whom the author is indebted for the preparation of a good earth-connexion near the gun, for permission to Mr. Kirby, a gentleman attached to the telegraph office, to assist in the experiments, and for a general superintendence of the arrangements at Cape Town. The observed times of hearing the sound were recorded on the chronograph by two observers, situated one (Mr. Kirby) at a distance of 641 feet from the gun, the other (Mr. Mann) at the Observatory, at a distance of 15,449 feet from the gun. The former distance was sufficient to allow the connexion of the main wire to be broken at the telegraph office after the gun had been fired, but before the sound reached the first observer.

scholarly journals I. An experimental determination of the velocity of sound

1872 ◽  
Vol 162 ◽  
pp. 1-6
Keyword(s):  
Experimental Determination ◽  
Velocity Of Sound ◽  
Galvanic Current ◽  
Dry Air ◽  
Cape Of Good Hope ◽  
Point Of Interest ◽  
Royal Observatory ◽  
Port Elizabeth ◽  
Mean Time

A galvanic current passes from the batteries at the Royal Observatory, Cape of Good Hope, at 1 o’clock, Cape mean time. This current discharges a gun at the Castle, and through relays drops a time-ball at Port Elizabeth. It appeared to me that a valuable determination of the velocity of sound might be obtained by measuring upon the chronograph of the Observatory the time between the sound reaching some point near the gun and that of its arrival at the Observatory. I thought also that it would be a point of interest to check, within the limits of our changes of temperature, the variations in the velocity of sound as dependent upon temperature, and to obtain some test of the applicability of the coefficient of expansion of dry air, as determined in cabinet experiments, to the mixture of air and water which would be the medium of the propagation of sound in our experiments.

Experimental determination of a state equation for dissipative granular gases

1999 ◽  
Vol 96 (6) ◽  
pp. 1111-1116 ◽  
Author(s):  
E. Falcon ◽  
S. Fauve ◽  
C. Laroche
Keyword(s):  
Experimental Determination ◽  
State Equation ◽  
Granular Gases

AN EXPERIMENTAL DETERMINATION OF ISOLATED BUBBLE ACOUSTICS IN A NUCLEATE BOILING SYSTEM

1974 ◽  
Author(s):  
G. E. Robinson ◽  
Frank W. Schmidt ◽  
H. R. Block ◽  
G. Green
Keyword(s):  
Experimental Determination ◽  
Nucleate Boiling
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