<div dir="ltr"><br><div class="gmail_extra"><br>On Thu, Jul 10, 2014 at 10:50 PM, Keith Henson <span dir="ltr"><<a href="mailto:hkeithhenson@gmail.com" target="_blank">hkeithhenson@gmail.com</a>></span> wrote:<br><div class="gmail_quote">
<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class=""><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex" class="gmail_quote">
> >There are only 2 other sources that have the potential to power our<br>
> >civilization for the next billion years:<br>
</blockquote></div></blockquote><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class=""><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex" class="gmail_quote">
>>1) Fusion reactors, but nobody is close to figuring out how to build even a<br>
>> working model much less a practical machine.<br>
>> 2) Thorium fission reactors, and we?ve known how to build them for half a >century.<br></blockquote>
<br>
</div>> Well, it's fairly clear now much attention people pay to this list. I have rapped for years about power satellites </blockquote><div><br></div><div>I said there were 2 OTHER ways, power satellites are just another form of solar energy, a form that I think is even more impractical than terrestrial solar but if somebody can prove me wrong that would be great. <br>
<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
> Re fusion reactors, there is a working one at a convenient distance.<br></blockquote><div><br></div><div>Yes but we don't know how to build a reactor like the sun. The only way we know of to create a large scale release of fusion energy (very large scale!)<br>
is with a H bomb. In fact a H bomb is far more efficient than the sun or anything else found in nature except for a matter antimatter annihilation and that's not large scale. OK maybe pound per pound the accretion disk around a black hole might give a H bomb a run for it's money.<br>
<br></div><div> John K Clark <br></div><div><br> </div><div> <br></div></div></div></div>