Talk:International System of Units
Will the meter be a permanently shrinking unit?
The CGPM might have made a serious mistake in my opinion, by making the meter dependent on the speed of light. If Barry Setterfield is at all correct, then the speed of light has been slowing since creation and will continue to slow. If so, then we can expect the meter, as currently defined, to shrink.
They ought never have abandoned the old standard of 1,650,763.73 wavelengths of krypton-86 orange-red radiation.
Then again, I recognize that Setterfield's light-decay theory is no longer current, so maybe the meter won't shrink. It ought to be testable, though--see whether it will get significantly shorter than 1,650,763.73 wavelengths of krypton-86 orange-red light!--Temlakos 14:57, 10 March 2007 (EST)