Equally a problem with the fine structure constant, since it directly measures the strength of the electromagnetic force.
But the fine structure constant is dimensionless, so you don’t need to find a standard to measure it which doesn’t change when it changes.
Ah, now I see what you’re saying. Good point.
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But the fine structure constant is dimensionless, so you don’t need to find a standard to measure it which doesn’t change when it changes.
Ah, now I see what you’re saying. Good point.