Evil Year 2016 determined to persist as long as possible despite widespread unpopularity

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Evil Year 2016 determined to persist as long as possible despite widespread unpopularity Empty Evil Year 2016 determined to persist as long as possible despite widespread unpopularity

Post by Ben Reilly on Sat Dec 31, 2016 6:24 am

To the time-poor of the world: take heart, for 2016 is a generous year. Not only were you granted a leap day on February 29, you will soon score a New Year's Eve countdown bonus, a leap second, to hold off 2017 for a final sip or regret.

Whereas leap years add a day to align the calendar with the seasons, leap seconds align our everyday clocks with the Sun's position in the sky, that is, with the Earth's rotation.

Currently our planet takes roughly 86,400.00183 seconds (on average) to turn, instead of the expected 86,400 seconds you get by multiplying 24 hours by 60 minutes by 60 seconds. This may not sound like a great difference, but it amounts to a full second every 18 months. If left unchecked, it would become noticeable over time, and ultimately become problematic.

How did we get into this awkward situation? Why not just define a second so that there are exactly the right number? This sensible idea was tried in 1874, but hit a snag: the Earth keeps changing.

In terms of today's standard SI second (defined via atomic physics), the above discrepancy is due to the fact that the day is losing about 0.0015 seconds per century, due largely to tidal friction.

Not only that, it also changes quite erratically due to mass redistribution. For example, it is slowed by oceanic thermal expansion due to global warming, just as a playground spinning seat slows, via the conservation of angular momentum, when you place your body farther from the center.

http://www.usnews.com/news/best-countries/articles/2016-12-30/wait-a-moment-2016-will-be-a-second-longer

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Post by eddie on Sat Dec 31, 2016 10:11 am

i read a book once, a novel, and apparently this was also done in the 70's. It became the sole forcus of a young boy's life as he swore that adding that one second on, changed is whole life forever.

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Evil Year 2016 determined to persist as long as possible despite widespread unpopularity Empty Re: Evil Year 2016 determined to persist as long as possible despite widespread unpopularity

Post by 'Wolfie on Sat Dec 31, 2016 1:11 pm

eddie wrote:
i read a book once, a novel...

clappy

Well, that's a good start,  edds...

But I hope you don't just stop at one, reading is good for the mind..

Hopefully, next year you will manage another two,  maybe even three  ?      study

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Post by nicko on Sat Dec 31, 2016 1:16 pm

Sarcasm is good for a laugh Laughing
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Post by eddie on Sat Dec 31, 2016 6:13 pm

WhoseYourWolfie wrote:
eddie wrote:
i read a book once, a novel...

clappy

Well, that's a good start,  edds...

But I hope you don't just stop at one, reading is good for the mind..

Hopefully,  next year you will manage another two,  maybe even three  ?      study

Htats a godo ieda Wlof!

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