Friday, September 23, 2011

en·er·gy

en·er·gy

[en-er-jee]
noun, plural -gies.
1.
the capacity for vigorous activity; available power: I eat chocolate to get quick energy.
2.
an adequate or abundant amount of such power: I seem to have no energy these days.
3.
Often, energies. a feeling of tension caused or seeming to be caused by an excess of such power: to work off one's energies at tennis.
4.
an exertion of such power: She plays tennis with great energy.
5.
the habit of vigorous activity; vigor as a characteristic: Foreigners both admire and laugh at American energy.
 

Entropy, Evolution, Energy, the Big Bang Theory, Atoms and Consciousness

ev·o·lu·tion

ev·o·lu·tion

[ev-uh-loo-shuhn or, especially Brit., ee-vuh-]
noun
1.
any process of formation or growth; development: the evolution of a language; the evolution of the airplane.
2.
a product of such development; something evolved: The exploration of space is the evolution of decades of research.
3.
Biology . change in the gene pool of a population from generation to generation by such processes as mutation, natural selection, and genetic drift.
4.
a process of gradual, peaceful, progressive change or development, as in social or economic structure or institutions.
5.
a motion incomplete in itself, but combining with coordinated motions to produce a single action, as in a machine.
 

Tuesday, September 6, 2011

Sunshine Power

Do you ever wonder about the energy that the Earth gets from the Sun? Here are some fun facts from the University of Oklahoma's department of Geology and Geophysics:

  • incoming radioactive energy = 38 trillion watts = 38,000,000,000,000 joules per second
  • heat flux  = 0.075 watts per square meter  (average over Earth surface)
That's about 350 watts if you could grab everything hitting your very king-size one-acre yard. So you could run a couple of light bulbs and a (not too big) TV. But in places like Florida, we have much more power to work with. Next time, we'll take a look at that.


http://geophysics.ou.edu/geomechanics/notes/heatflow/global_heat_flow.htm