POV-Ray : Newsgroups : povray.off-topic : How long is one year? Server Time
1 Nov 2024 17:20:02 EDT (-0400)
  How long is one year? (Message 1 to 3 of 3)  
From: Warp
Subject: How long is one year?
Date: 1 Aug 2012 15:14:25
Message: <50198011@news.povray.org>
That question is actually surprisingly complicated and ambiguous.

http://www.youtube.com/watch?v=82p-DYgGFjI

-- 
                                                          - Warp


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From: Orchid Win7 v1
Subject: Re: How long is one year?
Date: 1 Aug 2012 16:01:46
Message: <50198b2a$1@news.povray.org>
On 01/08/2012 08:14 PM, Warp wrote:
> That question is actually surprisingly complicated and ambiguous.

A sidereal year? A tropical year? A calendar year? Some other type?

They are all /approximately/ the same length, but not exactly...

At to this that both the Earth's orbit velocity and rotational velocity 
aren't actually constant, and things get interesting.

But don't fret. They're all nearly the same length in proper time, but 
at relativistic velocities relative to the Solar System, even the 
question becomes somewhat meaningless. ;-)


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From: Invisible
Subject: Re: How long is one year?
Date: 2 Aug 2012 04:13:06
Message: <501a3692$1@news.povray.org>
On 01/08/2012 09:01 PM, Orchid Win7 v1 wrote:
> On 01/08/2012 08:14 PM, Warp wrote:
>> That question is actually surprisingly complicated and ambiguous.
>
> A sidereal year? A tropical year? A calendar year? Some other type?
>
> They are all /approximately/ the same length, but not exactly...
>
> At to this that both the Earth's orbit velocity and rotational velocity
> aren't actually constant, and things get interesting.
>
> But don't fret. They're all nearly the same length in proper time, but
> at relativistic velocities relative to the Solar System, even the
> question becomes somewhat meaningless. ;-)

NB. This is /before/ watching the video. I should go watch that now...


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