Contents contributed and discussions participated by terencepf
Interesting illustration of dark matter - 5 views
Awesome video of memory chip production - 1 views
helium discussion - 0 views
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This link has a nice concise explanation of helium escaping the atmosphere. http://www.astronomynotes.com/solarsys/s3.htm (this link describes the mechanics of particles escaping the atmosphere, this includes escape velocity, thermal and nonthermal process) http://www.springerlink.com/content/k094u75188h64516/fulltext.pdf ( and if you are really interested, this paper discuss helium in the atmosphere (production and loss) in much more detail )
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