SocraticGadfly: Plus ça change, even for the universe?

September 17, 2010

Plus ça change, even for the universe?

Looks like Old Man Universe might have changed over 13 billion or so years.

Specifically, the fine-structure constant may not be so constant.

Why is this important? If the constant is inconstant, then the strengthe of the electromagnetic force isn’t constant, either.

There had been some hints at this in the past few years, but with the question of whether the inconstancy was space-based or time-based. New evidence seems to not only support the inconstancy, but that it’s time-based. (Which makes more sense to me.)

Anyway, read all about it.

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