Well it is a stretch but 2.466/16 = 15.4125 THz
. so if one wanted to force a connection between the two values, then there could be a Rydberg multiple to the degree that the "15 THz" is really rounding off from the slightly higher value :-) From: MarkI-ZeroPoint Once they start playing with variations on a theme (different harmonics/subharmonics), I think it will reveal subtleties which QM could only guess at (thus the probabilistic nature of QM). I hope they report other transition frequencies soon! 2,466,061,413,187,018 hertz 2.466061413187018 * 10^15 hertz 2.47 PetaHertz 3 PetaHz = Near UV, wavelength 100nm, just above the visible spectrum.