2003-02-27 Maybe you got it backwards. I heard that light passing through objects like prisms and glass does slow down. But, we are talking about light on a vacuum, where there is nothing to disturb it.
Even if light did vary by some infinitesimal amount over aeons of time, within our lifespans, it is relatively constant. The effects on the metre would be undetectable. And if an FFU-ist gets all excited over this, remember, that FFU is tied to SI. If SI is in error, so is FFU, even more so. John ----- Original Message ----- From: "John Nichols" <[EMAIL PROTECTED]> To: "U.S. Metric Association" <[EMAIL PROTECTED]> Sent: Thursday, 2003-02-27 17:16 Subject: [USMA:24966] Speed of Light > Dear All: > > I remember one of my physics lecturers at ANU saying that the change in > phase angle for light may travel faster than the speed of light. But then > again I could just be remembering it wrong from 25 years ago. > > > > John Nichols BE, Ph.D. (Newcastle), MIE (Aust), Chartered Professional > Engineer > Assistant Professor > Texas A&M University > Department of Construction Science > Langford AC > Rm: A414 MD 3137 > College Station, TX 77843-3137 > > Electronic mail: [EMAIL PROTECTED] > Telephone: 979 845 6541 > Facsimile: 979 862 1572 > ----------------------------------------------------------------- > a fronte praecipitium a tergo lupi > > in front a precipice, behind a wolf > ----------------------------------------------------------------- >
