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Originally Posted by russ_watters
Quote:
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Originally Posted by The Bad Astronomer
In my calculations, the velocity of the core is not important, the angular rotation rate is (I'll have that noted in my math page). That is basically 2 x pi / period, or 6.28/(86400 seconds) = 0.000072. I put in the line about "1000 mph" because it's in the movie. In fact, that line is wrong. The outer core is 3500 km in radius, so the velocity is really only 570 mph. I'll have to add that as well!
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24 hour period? Just like the rest of the earth? So then the core really is NOT rotating in relation to the surface of the earth? Isn't that another bad astronomy point then?
core rotating with respect to the surface of the Earth or not? |
yeah another letter by letter deletion
oh never mind
From : MIDIOGRE Number : 178 of 179
To : HUB Date : 04/05/03 7:59pm
Subject : welcome Reference : 168
Read : 04/06/03 7:49am Private : NO
Hub - its OK for you to post those Alvord pictures elsewhere. - m
http://web.pdx.edu/~pdx00782
{by next Friday} 3-4-11