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Re: Time Must Have a Universe Equation

From moroney@world.std.spaamtrap.com (Michael Moroney)
Newsgroups sci.physics
Subject Re: Time Must Have a Universe Equation
Date 2016-06-22 15:29 +0000
Organization The World : www.TheWorld.com : Since 1989
Message-ID <nkeat2$usj$2@pcls7.std.com> (permalink)
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john <johnsefton288@gmail.com> tarded:

>Michael
>Have you timed any of those stars
>for the 200 to 250 million years that
>they give as the Cosmic Year?
>Come on!!

Have I personally timed the stars?  No.  Instead, I look up the works of
others, and I see that spiral galaxies such as the Milky Way have a galaxy
rotation curve where the star's velocity is a function of a star's distance
from the center.  Typically for stars close to the center the speed is
proportional to the distance, almost solid body style rotation like a record
o a record player, but stars not close to the center (such as our Sun) have
an almost constant velocity, meaning that part of the galaxy does NOT rotate
as a unit. A star twice as far out as a second star takes twice as long to
go around the center once as the second star.

The Galactic Year or Cosmic Year refers to one single star - our sun.  Just
like if we talk about a "year" it refers to how long it takes our Earth to
go around the sun, not how long it takes Saturn to do so.

>Different parts of a wave move at different speeds,
>Michael- does the wave break up?
>Come on!!
>You're talking out of your butt

The arms of a spiral galaxy are standing waves, not solid objects.  
Individual stars move in and out of the arms as they orbit, but they
spend more time in the arms than out of them.  This means the areas of
the galaxy corresponding to the arms are brighter than between the arms,
because of more stars per unit volume.

Look at the animation at https://en.wikipedia.org/wiki/Galaxy_rotation_curve
the right side galaxy.  It is how real galaxies are observed to rotate.
Notice how stars move into and out of the arms.  In fact, the arms
themselves don't rotate at all!

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Thread

Time Must Have a Universe Equation "reber g=emc^2" <herbertglazier0@gmail.com> - 2016-06-18 16:33 -0700
  Re: Time Must Have a Universe Equation trudi.schwander@gmail.com - 2016-06-19 03:22 -0700
    Re: Time Must Have a Universe Equation john <johnsefton288@gmail.com> - 2016-06-19 12:15 -0700
      Re: Time Must Have a Universe Equation moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-06-20 00:21 +0000
        Re: Time Must Have a Universe Equation john <johnsefton288@gmail.com> - 2016-06-20 06:44 -0700
          Re: Time Must Have a Universe Equation moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-06-20 19:30 +0000
            Re: Time Must Have a Universe Equation john <johnsefton288@gmail.com> - 2016-06-20 16:24 -0700
              Re: Time Must Have a Universe Equation moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-06-21 01:54 +0000
                Re: Time Must Have a Universe Equation john <johnsefton288@gmail.com> - 2016-06-21 11:55 -0700
                Re: Time Must Have a Universe Equation HVAC <mr.hvac@gmail.com> - 2016-06-21 12:35 -0700
                Re: Time Must Have a Universe Equation moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-06-21 20:26 +0000
                Re: Time Must Have a Universe Equation john <johnsefton288@gmail.com> - 2016-06-21 16:30 -0700
                Re: Time Must Have a Universe Equation john <johnsefton288@gmail.com> - 2016-06-21 18:13 -0700
                Re: Time Must Have a Universe Equation moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-06-22 15:43 +0000
                Re: Time Must Have a Universe Equation john <johnsefton288@gmail.com> - 2016-06-22 10:33 -0700
                Re: Time Must Have a Universe Equation moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-06-22 18:53 +0000
                Re: Time Must Have a Universe Equation moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-06-22 15:29 +0000
      Re: Time Must Have a Universe Equation "reber g=emc^2" <herbertglazier0@gmail.com> - 2016-06-21 12:49 -0700

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