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Quake may have shifted Earth's axis, shortened

Canadian Content
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Quake may have shifted Earth's axis, shortened day


World | 206813 hits | Mar 02 9:50 am | Posted by: WDHIII
12 Comment

The 8.8-magnitude earthquake that struck Chile on Feb. 27 was so powerful it may have tipped Earth's axis and shortened the length of a day, scientists at NASA say.

Comments

  1. by avatar stemmer
    Tue Mar 02, 2010 6:15 pm
    Wow...is this the same thing as the poles flipping?

  2. by Choban
    Tue Mar 02, 2010 6:19 pm
    Days are supposed to get longer this time of year, who do I write to get this time back? It adds up over a year and I want it back.
    All joking aside, between the Hati Quake, the one in Chile and Japan last week, I'm sure there are bigger worries than microseconds on the world clock.

  3. by avatar sandorski
    Wed Mar 03, 2010 12:11 am
    Crap, I already lack enough time and now this?? :twisted: :twisted:

  4. by avatar CDN_PATRIOT
    Wed Mar 03, 2010 1:41 am
    The axis' tilt is so bad now, as I'm writing this reply me and my computer table are sliding out the balcony door....

    :!: :!: :!:

    -J.

  5. by avatar Proculation
    Wed Mar 03, 2010 1:51 am
    I'm writing this message, I click "Submit" and it tells me I have already sent the message.

  6. by avatar ShepherdsDog
    Wed Mar 03, 2010 2:05 am
    see it shortened time so much we're actually going .sdrawkcab

  7. by avatar Proculation
    Wed Mar 03, 2010 2:16 am
    It shortened the day by about 1.26 microseconds. So, every 9.19 days, we loose one second.

    They will need to adjust the GPS satellites ! Without the ajustment due to relativity in the GPS (yes, Einstein), the positioning would be off 10km/day and it's only 7 microseconds/day difference.

  8. by avatar PluggyRug
    Wed Mar 03, 2010 2:41 am
    "Proculation" said
    It shortened the day by about 1.26 microseconds. So, every 9.19 days, we loose one second.

    They will need to adjust the GPS satellites ! Without the ajustment due to relativity in the GPS (yes, Einstein), the positioning would be off 10km/day and it's only 7 microseconds/day difference.



    Wouldn't that be shorter by 1 second every 793650.793 days?

    The axis has also supposed to have shifted 3".

  9. by avatar Proculation
    Wed Mar 03, 2010 2:52 am
    "PluggyRug" said
    It shortened the day by about 1.26 microseconds. So, every 9.19 days, we loose one second.

    They will need to adjust the GPS satellites ! Without the ajustment due to relativity in the GPS (yes, Einstein), the positioning would be off 10km/day and it's only 7 microseconds/day difference.



    Wouldn't that be shorter by 1 second every 793650.793 days?

    The axis has also supposed to have shifted 3".

    1/1.26 microseconds gives 793650.793 seconds^-1
    That means that every 793650.793 seconds, we get 1. Since the unit is a "second", we get a second every 793650.793 seconds which is 9.19 days (793650.793 / 3600 (hours) / 24 )

  10. by avatar PluggyRug
    Wed Mar 03, 2010 3:04 am
    "Proculation" said
    It shortened the day by about 1.26 microseconds. So, every 9.19 days, we loose one second.

    They will need to adjust the GPS satellites ! Without the ajustment due to relativity in the GPS (yes, Einstein), the positioning would be off 10km/day and it's only 7 microseconds/day difference.



    Wouldn't that be shorter by 1 second every 793650.793 days?

    The axis has also supposed to have shifted 3".

    1/1.26 microseconds gives 793650.793 seconds^-1
    That means that every 793650.793 seconds, we get 1. Since the unit is a "second", we get a second every 793650.793 seconds which is 9.19 days (793650.793 / 3600 (hours) / 24 )

    But if it's 1.26 microseconds per day, then it would it not take ~793650 days to accumulate one second, or 1,000,000/1.26?

  11. by avatar djakeydd
    Wed Mar 03, 2010 3:27 am
    Here's a day shortener for ya..

    http://www.youtube.com/watch?v=nIEioMy5EU0

    http://www.youtube.com/watch?v=Sj9Eqhm8IRM

  12. by avatar Proculation
    Wed Mar 03, 2010 3:34 am
    the "per day" statement is only a reference.

    See it like this:

    Every (3600 * 24 = 86400) 86400 seconds, 1.26 microseconds is lost.
    That means that:
    0.000 001 26 is lost every 86 400 seconds.

    Multiply those two numbers, you get 0,108864 days^-1
    Make that 1/0,108864, it gives 9,185773075 days.



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