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Strategies & Market Trends : 2026 TeoTwawKi ... 2032 Darkest Interregnum -- Ignore unavailable to you. Want to Upgrade?


To: TobagoJack who wrote (17780)4/26/2007 6:48:42 PM
From: Canuck Dave  Respond to of 218742
 
LOL, reminds me of the solar radiation problem we used to check surface integrals when I worked at the Climate center.

Simple problem: The solar constant at the top of the atmosphere is about 1330 Watts/M^2. What is the average amount of sunshine that a spot on the earth (assuming no reflection from clouds) gets?

You can do the complicated integral of amount of energy intersected at any point, but also note that the earth intersects a disc of pi*r^2 radiation and distributes it over 4*pi*r^2 .

So the answer is simply 1/4 of 1330.

CD



To: TobagoJack who wrote (17780)4/26/2007 8:41:32 PM
From: energyplay  Read Replies (1) | Respond to of 218742
 
Reminds me of the barometer question legend :

snopes.com



To: TobagoJack who wrote (17780)4/26/2007 8:48:02 PM
From: Elroy Jetson  Read Replies (1) | Respond to of 218742
 
We had a ZBT at Berkeley, next door to out Theta Chi. They were party boys.
.



To: TobagoJack who wrote (17780)4/27/2007 8:34:32 AM
From: Ilaine  Read Replies (1) | Respond to of 218742
 
'and one of you, mr. chen, did the problem this way'

I had a couple of moments like that myself. Mine were the result of listening to the words instead of the numbers, using logic instead of calculation. What I liked the best was meeting the eyes of the teachers, who were scanning the room to see who got it, and exchanging smiles to see me done with the problem while the rest of the class were frantically scribbling (this was before calculators).

Didn't realize (or remember) that you went to Cornell. Ben was accepted into Cornell Law School but decided on University of Virginia instead.

Cornell looks like a fun place if you are into hiking and camping and so forth, during the summer, at least.