Thanks bcrowell. I agree that more data is needed. With such an extraordinary claim, am surprised that more data is not available either proving or disproving this result. I believe a 2.5 sigma level is significant when speaking of a velocity that should be absolutely constant. However...
http://www.universetoday.com/11889/high-energy-gamma-rays-go-slower-than-the-speed-of-light/
http://www.arxiv.org/abs/0708.2889
https://www.physicsforums.com/showthread.php?t=189175
Agreed it would be revolutionary. It is interesting because nobody can speak of light when the wavelength is on...
Hey all, am new here so please go easy on me.
This regards observation of Markarian 501 with the MAGIC telescope. Gamma rays appear 4 minutes after the visible light. That high energy photons (gamma rays) travel more slowly through the "quantum foam" has been suggested, and even more mundane...