"The Flavored Coffee Guy" <elgersmad@rock.com> wrote in message
news:1168049597.244070.100810@s34g2000cwa.googlegroups.com...

If a gas is ionized to a high enough potential, it will produce a
plasma.  Plasmas reach much higher temperatures than normal gases, and
can require much less energy to maintain.  Ionized gases will repel,
one way or another, it is all a matter of coupling a beam to air.
There is little or no difference in an ion propulsion system, hall
thruster, and basically the energized gas atoms will expand for one
reason or another, be it energy level, or plasma state and temperature.

what has this to do with symbollic calculation..?

Malc,

Your self confidence is not built on an education, nor an understanding
of the physics.  It's just a self-righteous delusion of grandure you
carry arround assuming that you are as right as rain, looking at the
world through a blindfold, and thinking of yourself as Christ.

Helium, and hydrogen are lighter than air, but if you superheat them,
they are much lighter.  Atmospheric gases can be lighter than cold
hydrogen or helium when ionized.