OK, Who's Overclocking The Earth?
from the no-wonder-time-feels-like-it's-passing-so-quickly dept
Remember back in 1999 when people started talking about "internet time", which was this crazy notion that, thanks to the internet, the usual course of business went much much much faster? Well, it sounds like the Earth tried to get in on some of that, as it's now been revealed that since 1999, our home planet has been making it's annual trek around the sun one second faster than it was for quite some time. Between 1972 and 1999, we had to add a special "leap second" each year, since the Earth was slowing down, and losing a step. However, since 1999, for reasons no one is quite sure, the Earth appears to have caught a second wind and is speeding up a bit.
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Overclocking the Earth
http://tycho.usno.navy.mil/leapsec.html
will show that 5 leap seconds between 1972 and 1999 were not required, including three in consectutive years, so the fact that 4 have not been added recently hardly proves a definitive trend.
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What time is it???
It would have been a cute idea to have a [S]watch (TM) time that you could recognize that Jack or Jill in Timbuk3 was awake without adding ot subtracting 14 hours in your head, but nothing much more...
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Medieval Guilt
Perhaps future generations will view our Greenhouse Effect control efforts like the self-flagellators of medieval times, punishing ourselves for imaginary sins.
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Symptom of a decaying orbit?
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"...for reasons no one is quite sure..."
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Re:
This is hardly a mysterious effect. The Earth's rotation is slowing down with time. This is mostly due to tidal effects with the Moon and (to a much lesser extent) the Sun. There are also other factors involved, such as the shifting of mass (on the surface and under the surface) which create a wobble in the Earth's rotation axis and leads to humans making adjustments in our timekeeping system.
Because we like to keep time by the apparent position of the Sun and/or stars in the sky as the Earth rotates on its axis, we are forced to resync our clocks every now and then to take into account that the Earth is not a perfect rotating sphere isolated from everything else in the universe.
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Years?
This is why it bothers me when folks estimate that the universe or Earth is X-Billion years old. What's a year going to be 6 billion trips around the sun from now?
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