Archimedes Plutonium <a_plutonium@dtgnet.com> wrote in message news:<3F28C3F9.F74FD52D@dtgnet.com>...
Thanks for the summary and I have not given up on aluminum. Just that
I know for sure that unlike salt, building an EarthAirConditioner out of
aluminum will cost this planet perhaps the entire oil reserves of Saudi Arabia
to mine, manufacture, process and to cargo haul into the interface between
upper atmosphere and outer space.
So build it out of aluminum from an Earth-crossing asteroid. Then you
only have to shift an aluminum refinery and foil rolling plant into
space.
We need an expert scientist in this specialty to tell us where the ideal
radius of this Envelope that will have Earth inside. A sperical Envelope.
I am guessing that the spherical envelope circumscribed by the SpaceStation
orbit is actually quite good as the radius and for building the first
EarthAirConditioner.
I don't think Earth orbit is a good spot for the AC, and the space
station orbit isn't spherical. It would need to be in a fully polar
orbit to circumscribe a sphere. Currently, the ISS only circumscribes
a band between about 51 North latitude and 51 South latitude.
I disgree that aluminum is not a health hazard. I still believe that aluminum
is a slow causing cancer and also perhaps the contributing-culprit in Alzheimers
or Parkinsons and various other.
I've heard that, too. However, if you read what I said, I stated that
ultra-thin aluminum foil entering Earth's atmosphere is unlikely to
remain aluminum. It will almost certainly be oxidized quite thoroughly
into aluminum oxide, aka alumina, aka sapphire. Aluminum oxide is an
extremely inert, high temperature ceramic that will not react or
dissolve in the human body.
I think salt is still the best bet because it would be like a ocean-atmosphere
and people are not risking their health if they emerse in ocean water or any
salt water.
Except that salt is transparent.
Here we need someone who knows how materials behave in those Spherical
Envelopes of various radii from Earth center.
Just go for a Lagrange mirror array and skip the trouble (and
lawsuits) of cluttering up Earth orbit.
Mike Miller
.
