At 11:00 -0400 8/08/2002, Joseph B. Reid wrote: >I think that M.R.Madam has read too much into the CNN report. CNN >mentioned that the speed of light is approximately 300 000 km/s, they gave >no other figure, nor did the despatch state how fast the speed of light is >slowing down. Until we get more details we can only continue to use the >accepted speed of light, which is > c = 299 792 458 m/s. >Since 1948 this relationship defines the metre in terms of the second,
Was it not in 1983? >which was defined in 1968 as: >"The second is the duration of 9 192 631 770 periods of the radiation >corresponding to the transition between the two hyperfine levels of the >ground state of the caesium 133 atom." Was it not in 1967? Louis
