On Wed, 27 Feb 2008 12:10:11 +0000, LSR wrote:

The Natural Philosopher wrote:
Apart from nuclear power stations, all the energy that is used in the
world, including fossil fuel, comes from sunshine.

+pedant mode ...except geothermal e.g. hot springs.

I suppose you could argue that fossil fuels are renewable over dozens of
millions of years.

What about tidal barrages?

That ultimately comes from the Earth's rotation kinetic energy (not the
moon's orbital energy which is actually very slowly increasing due to the
tides).
Which makes me think:
How long before the moon is twice as far from earth?
How long before the tides are half as strong?
How long before the "months" are twice as long?
How long would a day be at the above times?


--
Ed Sirett - Property maintainer and registered gas fitter.
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