Re: CHAT: what fruit bat?

> Padraic Brown wrote:
> > As far as I can tell, the only real difference between the two
> > Summers is that in one you're over the sunrise; and during the
> > other, you're over the sunset.
Tristan Alexander McLeay wrote:
> That rings a bell... but I've never understood what it means.
You've got your disc, rotating in 800 days; and you've got your sun,
orbiting the disc each day in a vertical circle.  For reference, let's
assume the sun rises on the turtle's left and sets on the turtle's
right.

Okay so far?  Consider a house on the Rim.

Day 0:  the house is over the turtle's head,
so the sun never comes very near: this is winter.

Day 200:  the house is over the turtle's right flank: the point
on the Disc nearest to the setting sun.  This is one summer.

Day 400:  the house is over the turtle's tail: another winter.

Day 600:  left flank, rising sun, summer.

Day 800:  head, winter.


I assume I have some irrelevant details wrong.  The story gets more
complex if the sun's path is not in a vertical plane, or does not pass
over the Hub.


--
Anton Sherwood  --  http://www.ogre.nu/

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