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Lakeshore
An author of no particular popularity

Jay Lake
Date: 2007-04-08 18:46
Subject: the_child speaks
Security: Public
Tags:child, funny, norwescon, science
Driving home from Norwescon, the_child and I got into a conversation about directional points, which led us to magnetic poles, which led us to axes of rotation, which led her to ask me if the universe rotated. Her point was that if planets, stars and galaxies all rotated, it seemed reasonable that the universe might do so as well. I told her that I thought the universe didn't have a general rotation (and if it did, would this be observable?), but I'd ask. What this boils down to is: where is the north pole of the universe?

We then got into a discussion about the flatness of space. Really.

Later on she told me to take up tai chi. "You work too hard on your writing, Dad, and you play with me. But you need to take a chance. Mama took a chance on fencing lessons."
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shaolingrrl
User: shaolingrrl
Date: 2007-04-09 03:17 (UTC)
Subject: (no subject)
She has a very good point. Tai chi would be very good for you.

As for the other point--I'm inclined to think that the energy of expansion is radially outward and the universe itself doesn't rotate, but you certainly can't quote me on that. Well, you can quote me, but it would only do you any good if you wanted to make me sound like an idiot.
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Jay Lake
User: jaylake
Date: 2007-04-09 04:24 (UTC)
Subject: (no subject)
Actually, my take is pretty much the same as yours, but my grasp of cosmology would have to improve considerably to be upgraded to "shaky."

And hi!
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shaolingrrl
User: shaolingrrl
Date: 2007-04-09 04:30 (UTC)
Subject: (no subject)
Hey there! Check out my "guilt is good" post. I'd be interested in your comments.
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scarlettina
User: scarlettina
Date: 2007-04-09 04:40 (UTC)
Subject: (no subject)
the_child is good. the_child is wise.

And, for the record, even though I've said it before, tillyjane is pretty cool. Each generation goes a long way to explaining you.
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Misty Marshall
User: mistymarshall
Date: 2007-04-09 05:10 (UTC)
Subject: (no subject)
Well you do already get up at sunrise *giggle* Was good seeing you. Am sad we didn't get to chat much. I sort of overextended myself with my paneling...
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Jay Lake
User: jaylake
Date: 2007-04-09 15:06 (UTC)
Subject: (no subject)
Yah, we never did talk, more's the pity.

Le sigh.
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Bob
User: yourbob
Date: 2007-04-09 06:32 (UTC)
Subject: Does the Universe Rotate
For a discussion on this topic among physicists,
http://www.physicsforums.com/showthread.php?t=88577

However - the big point there is, to me:
"If the universe did rotate what would it rotate with respect to?"

This is similar to "if there's an edge to the 'everything', what's outside?"
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Jay Lake
User: jaylake
Date: 2007-04-09 15:07 (UTC)
Subject: Re: Does the Universe Rotate
That one kind of occurred to me to...against what are we measuring its potential rotation?
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User: dirkcjelli
Date: 2007-04-09 12:22 (UTC)
Subject: While it doesn't rotate...
While it doesn't rotate, it would be a mistake to imply homogeneity. (Actually, it is like the earth-- a smooth ball to the first approximation, bumpy to the 2nd.)

Cosmic Microwave Background

More detailed Cosmic Background

a random article and a random blog entry
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User: dirkcjelli
Date: 2007-04-09 12:23 (UTC)
Subject: Re: While it doesn't rotate...
... that second link should be to By Bee on Tuesday, December 26, 2006 (I couldn't get to a perma-link)

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Jay Lake
User: jaylake
Date: 2007-04-09 16:52 (UTC)
Subject: Re: While it doesn't rotate...
Thank you, sir. I'm always amazed that this little person, who usually doesn't seem to remember what day of the week it is, can follow lines of thought so far. I'm not always sure what's going on behind the 9-year-old filter, but hey, she asks, we discuss.
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