Re: Programming a calendar system

Bonjour tout le monde,

From: "Mark J. Reed" <markjreed@...>
Sent: Thursday, April 29, 2004 6:20 PM
Subject: Re: Programming a calendar system


> MJR> So the planet of the Aregans must be 0.6064^2^(1/3) = 0.5325
> MJR> AU from their Sun.
>
> JW> [nitpick alert]
> JW> R=T^(2/3)
> JW> this calculates to about 0.7167 AU by my calculator. Did I do
something
> JW> wrong here?
> JW> [/nitpick]
>
> No, I did.  I entered it as T^2^(1/3) which associates the wrong way -
> it's T^(2^(1/3)) instead of (T^2)^(1/3).  Should have just done
> T^(2/3) like you did. :)  Your figure is correct, and it's still
> in the habitability zone for K-type stars.  Very close to the K/G
> line, though, so the star would be more orange than red.
... I guess the sky isn't still blue anymore thus? => The sun is white.

From: "Roger Mills" <rfmilly@...>
Sent: Friday, April 30, 2004 1:09 AM
Subject: Re: Programming a calendar system


> Carsten Becker wrote:
>
> >
> > My birthday is August 26, 1986. For me, 1986-1000=986 ... sh**, it
> > should have been -2000 years to get -986! Sorry!
>
> Apologies for the nitpick, but that's the sort of Math. error that
bedevils
> me....2000 years before 1986 is -14, no?  -986 would be 986+1986 =
2972 yrs
> prior. Unless, of course, _I'm_ mistaken......
Damn maths! You're right. Now let's do it with an equation to be 100%ly
sure:

    -986 =  1986 - x |*(-1)
     986 = -1986 + x |+1986
       x =  2972
       =========

From: "Mark J. Reed" <markjreed@...>
Sent: Friday, April 30, 2004 3:18 AM
Subject: Re: Programming a calendar system

> On Thu, Apr 29, 2004 at 09:02:14PM -0400, Mark J. Reed wrote:
> > Argh, argh, argh.  You are of course correct.  Preceding message
results
> > incorrect if you want to base it on -14 (= 15 BC),
> > although the technique is still valid.  Will recompute.
>
> Meanwhile, here's the PHP for the -986 basis.  Which tells me that it
> is right now 4930-18-02 09:12:63 Aréqan time.
>
> <?
> [...] snipping the whole cool script [...]
> ?>
>
Wow! You're great! Thanks Mark!!!! Only the maths are still scaring me
...

Yours,
Carsten

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