In view of certain criticisms brought against it, the smoke method used by Pearson has been further investigated. Various possible sources of error have been eliminated, and measurements of the velocity of sound have been made in air, oxygen and nitrogen in the frequency range 92.2 to 801.7 kc./sec. The results are believed to be correct to within 1 part in 3000, and no evidence of dispersion in this range has been found. An explanation is given for Pearson's results.
No takes yet. Share an insight, caveat, or question.
Ron Parker (1937) studied this question.
Synapse has enriched one closely related paper. Consider it for comparative context: