Soapy Sam Penultimate Amazing S Joined Oct 23, 2002 Messages 28,769 Sep 17, 2004 #41 Due to recently introduced EC regulations , hyperfine levels of the ground state of the Caesium-133 atom are only obtainable in packs of three.
Due to recently introduced EC regulations , hyperfine levels of the ground state of the Caesium-133 atom are only obtainable in packs of three.
