[ExI] Too many level shifts (was Nature Hates a Vacuum)

[Amara Graps]

hkhenson hkhenson at rogers.com :
>To a very good approximation nature is *all* vacuum.

More precisely, most of the universe is in a plasma state. [1]
Rocks and liquids and life are special conditions. [2]

Amara


[1]
http://en.wikipedia.org/wiki/Plasma_%28physics%29
http://www.opencourse.info/astronomy/introduction/08.matter_phases/

[2] number density: >10^{21} charged particles/meter^3 and
temperature ~10^2 to 10^4 Kelvin

-- 

Amara Graps, PhD      www.amara.com
Research Scientist, Southwest Research Institute (SwRI), Boulder, Colorado