transport mechanism involving bulk motion of a medium

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10
votes
2answers
333 views

Is this a weather phenomenon or an instrumental artifact?

The radar image of the midwest provided by Weatherunderground at 10:30 PM Central time, May 8 2011 has odd patterns. Are these patterns real? Perhaps caused by large scale convection over cities? Or ...
4
votes
2answers
402 views

Can the earth's magnetic field be generated by heat from a natural nuclear reactor?

I've come upon Dr. J. Marvin Herndon's theory that the earth's magnetic field is generated by a hot nuclear reactor operating in the center of the earth. This is backed by various papers, some of them ...
5
votes
5answers
2k views

Is there an equation for convective heat transfer?

Is there an equation I can use to calculate the temperature (as a function of time) of an object which is gaining or losing heat by convection? Or equivalently, the rate of energy transfer from the ...