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| Raider of the lost time
Status: Offline Posts: 5,613
Thanks Given: 790
Thanked 180x in 174 Posts
Join Date: Nov 2003 Rep Power: 80 | concrete progress -
05-01-2006, 12:56 PM
The opportunity arises to observe the changing landscapes of advancing (growth) or deteriorating (decay) man made structures for the progress of human society through the windows of public buses and light rails of Dallas, Texas. The unchanging are the concrete infrastructures made of cement, please see http://en.wikipedia.org/wiki/Concrete and http://www.rumford.com/articlemortar.html and http://www.azom.com/details.asp?articleID=1317 and http://inventors.about.com/library/inventors/blconcrete.htm and http://www.cement.org/basics/concretebasics_history.asp for a few ideas since there are more weblinks about cement and concrete than anyone can shake with a stick with. If the analogy could be made, what would be the cement and concrete for the progress of a TOE?
Time independence: [∂E(g)]²=[∂F(a)×∂r(a)]·[∂F(b)×∂r(b)] and Mass independence: ¶a(t)·¶r(t)=c²
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