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The Distant Revolving Astronaut: When Time Runs Backwards

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  The Distant Revolving Astronaut: When Time Runs Backwards Sam Wormley <swormley1@gmail.com> - 2016-04-18 16:20 -0500
    Re: The Distant Revolving Astronaut: When Time Runs Backwards jimp@specsol.spam.sux.com - 2016-04-18 21:46 +0000
    Re: The Distant Revolving Astronaut: When Time Runs Backwards Sergio <invalid@invalid.com> - 2016-04-19 08:56 -0500
      Re: The Distant Revolving Astronaut: When Time Runs Backwards HVAC <mr.hvac@gmail.com> - 2016-04-19 07:13 -0700
        Re: The Distant Revolving Astronaut: When Time Runs Backwards benj <nobodyxx@gmail> - 2016-04-19 13:44 -0400
          Re: The Distant Revolving Astronaut: When Time Runs Backwards HVAC <mr.hvac@gmail.com> - 2016-04-19 11:00 -0700
            Re: The Distant Revolving Astronaut: When Time Runs Backwards benj <nobodyxx@gmail> - 2016-04-19 23:05 -0400
              Re: The Distant Revolving Astronaut: When Time Runs Backwards HVAC <mr.hvac@gmail.com> - 2016-04-20 04:04 -0700
                Re: The Distant Revolving Astronaut: When Time Runs Backwards benj <nobodyxx@gmail> - 2016-04-20 13:18 -0400
    Re: The Distant Revolving Astronaut: When Time Runs Backwards "reber g=emc^2" <herbertglazier0@gmail.com> - 2016-04-19 09:37 -0700

#571401 — The Distant Revolving Astronaut: When Time Runs Backwards

The Distant Revolving Astronaut:  When Time Runs Backwards
> http://physicsinsights.org/revolving_astronaut.html



> Imagine a spaceship in orbit around a distant planet.  Imagine that
> the Earth lies in the plane of the orbit.
>
> At one point in the orbit, the ship will be traveling directly toward
> the Earth.  At that moment, in the momentarily comoving reference
> frame of the ship, the Earth lies far ahead of the ship.  Since the
> ship is moving toward Earth, that means that time on the Earth must
> appear far ahead of "local" time on the planet below.  Looking at the
> Lorentz transform, if ship's time is zero, and velocity is positive,
> then Earth's velocity relative to the spaceship is negative, and
> current time on Earth will be given by v*gamma*distance.  Again, the
> clocks on Earth seem to the astronauts to be set far in the future.
>
> At another point in the orbit, the ship will be traveling directly
> away from the Earth.  The sign on the velocity flips, and now it
> seems to the astronauts that clocks on Earth are set far in the past,
> as the Earth time is now given by -v*gamma*distance.


   This was just the beginning.



-- 

sci.physics is an unmoderated newsgroup dedicated
to the discussion of physics, news from the physics
community, and physics-related social issues.

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#571415

Sam Wormley <swormley1@gmail.com> wrote:
> The Distant Revolving Astronaut:  When Time Runs Backwards
>> http://physicsinsights.org/revolving_astronaut.html
> 
> 
> 
>> Imagine a spaceship in orbit around a distant planet.  Imagine that
>> the Earth lies in the plane of the orbit.

Imagine a certain copy and paste spammer got a blog and stopped spamming
sci.physics.


-- 
Jim Pennino

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#571544

On 4/18/2016 4:20 PM, Sam Wormley wrote:
> The Distant Revolving Astronaut:  When Time Runs Backwards
>> http://physicsinsights.org/revolving_astronaut.html
>
>
>
>> Imagine a spaceship in orbit around a distant planet.  Imagine that
>> the Earth lies in the plane of the orbit.
>>
>> At one point in the orbit, the ship will be traveling directly toward
>> the Earth.  At that moment, in the momentarily comoving reference
>> frame of the ship, the Earth lies far ahead of the ship.  Since the
>> ship is moving toward Earth, that means that time on the Earth must
>> appear far ahead of "local" time on the planet below.  Looking at the
>> Lorentz transform, if ship's time is zero, and velocity is positive,
>> then Earth's velocity relative to the spaceship is negative, and
>> current time on Earth will be given by v*gamma*distance.  Again, the
>> clocks on Earth seem to the astronauts to be set far in the future.
>>
>> At another point in the orbit, the ship will be traveling directly
>> away from the Earth.  The sign on the velocity flips, and now it
>> seems to the astronauts that clocks on Earth are set far in the past,
>> as the Earth time is now given by -v*gamma*distance.
>

wrong.   math is wrong too
all you are talking about is relitive motion,
and that does not translate to Wormley's title of the post.

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#571546

Sergio said
wrong.   math is wrong too 
all you are talking about is relitive motion, 
and that does not translate to Wormley's title of the post. 
--------

I agree with Sergio 100%.

One thing you can count on in our universe is that time NEVER runs backwards. Ever. Time can be caused to slow or speed up relative to an observer, but it can never ever be made to go backwards.

Any experiments that seem to show things going back in time are mistakes in the experiment. 

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#571594

On 04/19/2016 10:13 AM, HVAC wrote:
> Sergio said
> wrong.   math is wrong too
> all you are talking about is relitive motion,
> and that does not translate to Wormley's title of the post.
> --------
>
> I agree with Sergio 100%.
>
> One thing you can count on in our universe is that time NEVER runs backwards. Ever. Time can be caused to slow or speed up relative to an observer, but it can never ever be made to go backwards.
>
> Any experiments that seem to show things going back in time are mistakes in the experiment.
>
All laws of nature are correct no matter which way time runs!

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#571601

BJ quacked
- show quoted text -
All laws of nature are correct no matter which way time runs!
------------

Especially the laws regarding the arrow of time 

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#571717

On 04/19/2016 02:00 PM, HVAC wrote:
> BJ quacked
> - show quoted text -
> All laws of nature are correct no matter which way time runs!
> ------------
>
> Especially the laws regarding the arrow of time
>
HVAC doesn't know science but loves being on the school debating team.

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#571793

BJ quacked
HVAC doesn't know science but loves being on the school debating team.
--------------

Poor BJ. He SO wants to be me. Sort of like a little kid who wants to be a fireman when he grows up.

It's OK BJ. I'm used to being a role model. It's a great responsibility that I accept freely. All kids need a hero to look up to. Tell you what. Send me your address and I'll see to it that you get an HVAC swag bag including a signed picture of me.

Right right?

Fist bump? Fist bump bro?

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#571873

On 04/20/2016 07:04 AM, HVAC wrote:
> BJ quacked
> HVAC doesn't know science but loves being on the school debating team.
> --------------
>
> Poor BJ. He SO wants to be me. Sort of like a little kid who wants to be a fireman when he grows up.
>
> It's OK BJ. I'm used to being a role model. It's a great responsibility that I accept freely. All kids need a hero to look up to. Tell you what. Send me your address and I'll see to it that you get an HVAC swag bag including a signed picture of me.
>
> Right right?
>
> Fist bump? Fist bump bro?
>
Sure, everyone wants to be just like HVAC and go to the hospital and get 
those arteries reamed out to try to get some blood back to his 
micro-encephalitic brain. The effects of eschemias prior to the 
operation are clearly obvious. Poor bloke!

How about giving us the double-secret overlord handshake?

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#571574

On Monday, April 18, 2016 at 2:20:54 PM UTC-7, Sam Wormley wrote:
> The Distant Revolving Astronaut:  When Time Runs Backwards
> > http://physicsinsights.org/revolving_astronaut.html
> 
> 
> 
> > Imagine a spaceship in orbit around a distant planet.  Imagine that
> > the Earth lies in the plane of the orbit.
> >
> > At one point in the orbit, the ship will be traveling directly toward
> > the Earth.  At that moment, in the momentarily comoving reference
> > frame of the ship, the Earth lies far ahead of the ship.  Since the
> > ship is moving toward Earth, that means that time on the Earth must
> > appear far ahead of "local" time on the planet below.  Looking at the
> > Lorentz transform, if ship's time is zero, and velocity is positive,
> > then Earth's velocity relative to the spaceship is negative, and
> > current time on Earth will be given by v*gamma*distance.  Again, the
> > clocks on Earth seem to the astronauts to be set far in the future.
> >
> > At another point in the orbit, the ship will be traveling directly
> > away from the Earth.  The sign on the velocity flips, and now it
> > seems to the astronauts that clocks on Earth are set far in the past,
> > as the Earth time is now given by -v*gamma*distance.
> 
> 
>    This was just the beginning.
> 
> 
> 
> -- 
> 
> sci.physics is an unmoderated newsgroup dedicated
> to the discussion of physics, news from the physics
> community, and physics-related social issues.

BH makes time stop.Time can never run backwards when universes are in a state of expansion That is a given Trebert

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