Accession Number : AD0686803

Title :   MASS-FREQUENCY EFFECT ON VLF AND PORTABLE CLOCK COMPARISONS OF ATOMIC FREQUENCY STANDARDS,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF APPLIED PHYSICS

Personal Author(s) : Mungall,A. G. ; Daams,H. ; Bailey,R. ; Morris,D.

Report Date : 18 NOV 1968

Pagination or Media Count : 2

Abstract : A recent publication, 'The effect of mass on frequency' by SADEH, KNOWLES, and AU, describes two experiments in which the frequency of electromagnetic radiation was apparently decreased due to the proximity of a large mass. If such is actually the case, then all comparisons of frequency standards by means of radio transmissions should be corrected for this effect. In addition all remote clocks synchronized via VLF transmissions to a distant master clock would actually run slow with respect to the master clock. Our investigation indicates that if any disagreement between radio and flying clock measurements of frequency exists, it is, at most, about an order of magnitude smaller than that predicted by SADEH, KNOWLES, et al. It thus appears that there is good reason to doubt the suggestion that the frequency of electromagnetic radiation is altered by passage near to large masses. (Author)

Descriptors :   (*TIME SIGNALS, RADIO TRANSMISSION), (*RADIO TRANSMISSION, WEIGHT), VERY LOW FREQUENCY, ATOMIC CLOCKS, STANDARDS, CANADA

Subject Categories : Test Facilities, Equipment and Methods
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE