Bitstring <[email hidden]>, from the wonderful person
Bob Watkinson <[email hidden]> said
<snip>
Quoted message said:Quoted message said:But fusion will still produce energy on top of that which sun has provided
us with, so it will still cause warming of the earth, heat pollution.
Eh! Have you fogotten your basic physics. Energy can neither be created nor
destroyed. With fusion you release latent energy you do not add anything on
top of anything. It's got nothing to do with global warming.
That's about as incorrect as you can get. Global warming means the
average temperature rises, which means more energy arrived at the
Earth's surface than left. Now 99% of the energy arriving at the earth's
surface comes from the Sun, true. However energy from fusion, fission,
or burning coal, counts too.
Energy leaves just one way - it is radiated back into space (heading
into the background temperature level of about 3 degrees above absolute
zero). Radiation is proportional to absolute temperature to the 4th
power, so a 1% temperature rise means you can dump ~4% more energy per
unit time by radiation.
Adding more energy (from fusion/fission) might jack the temperature up
by some insignificant amount. The real impact however comes from things
which stop the Sun's energy (99%+ of the total!) from getting away.
Clouds. CO2/CH4/SO2 in the air. Etc. Etc.
--
GSV Three Minds in a Can
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