3 ms·
No, any possible variation in fundamental "constants" is going to be far slower. The fine-structure constant (which is generally what's actually being discussed
by hither_shores 4y ago
No, any possible variation in fundamental "constants" is going to be far slower. The fine-structure constant (which is generally what's actually being discussed when people talk about a variable speed of light), for instance, changes by no more than a factor of about 10^-17 per year.
- hinkley 4y agoDid we know that 70 years ago? I’m talking about history, not today.
- hither_shores 4y agoThat particular bound wasn't. Others were. For example: Millikan's value for the electron charge was about .995 of the current best measurements. That was about a century ago. So either someone was wrong, the average rate of change has dramatically increased recently (in which case the universe is conspiring against physicists and all bets are off), or human biochemistry is significantly younger than human civilization.