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General Science / Re: What is each solar day a couple of minutes faster or slower than the previous?
« on: Yesterday at 16:46:14 »How long before the slowing of the earth's rotation will force us to choose between retaining 86400 seconds in a day and retaining the current definition of the second?At a rate of 1.7 ms per century, 58,000-59,000 years for the Earth's rotation to increase by 1 sec. The definition of a sec is unlikely to change, as it it tied to so many things in physics. What will happen is that, as time goes on, leap seconds will be added more and more frequently. But by the time it becomes necessary to add one a day, I'm sure our clocks will be able to do it pretty much automatically as needed.