Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1969
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1969natur.223..161i&link_type=abstract
Nature, Volume 223, Issue 5202, pp. 161 (1969).
Astronomy and Astrophysics
Astronomy
3
Scientific paper
LABORATORY measurements have duly verified that the velocity of light is independent of the velocity of the source to an accuracy of 1.3 in 104 for γ-rays from π0 meson decay at 6 GeV (ref. 1) and is also isotropic to better than 6 in 108 (ref. 2), 2 in 108 (ref. 3) and 2 in 1010 (ref. 4) in a frame of reference attached to the Earth. The best evidence that the velocity of light is independent of frequency probably depends on astronomical observations of Cepheids in the nearest galaxies, and makes it possible to set a limit of 1 in 108 on dispersion. Somewhat poorer limits over a much wider range of frequencies, from the visible to the radio-frequency region, have been provided by observations of flare stars5.
No associations
LandOfFree
Improved Limit on the Absence of Dispersion of the Velocity of Light does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Improved Limit on the Absence of Dispersion of the Velocity of Light, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Improved Limit on the Absence of Dispersion of the Velocity of Light will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1829742