I thought America was a made up place for slow news days..... Is it really real .... like the isle of man? Incredible.....
USA From HMG. Payback time
- Thread starter anobium
- Start date
Sponsored Links
It is a test from Mizz magazine used by teenage girls to find out if their breasts are pert "enough".
A simple ball point as designed by Mr Biro would not work in space fro 2 reasons. [1] no gravity to keep ink in contact with the ball and [2] in the vacuum of space the ink would boil dry.
http://www.spacepen.com/Public/Technology/index.cfm[/QUOTE]
I confess to falling into the trap of posting from memory.
However I found this http://www.esa.int/esaCP/SEM9YN7O0MD_index_0.html which would appear to be a reliable source. That confirms that a standard ball point pen will work in space.
I have found other sites that mention that normal Lead pencils were used in the Mercury and Gemini missions. One of the reasons stated as looking for a replacement was that they were looking for a writing implement that was not flammable in the 100 Oxygen atmosphere.
Sponsored Links
2
2scoops0406
A simple ball point as designed by Mr Biro would not work in space fro 2 reasons. [1] no gravity to keep ink in contact with the ball and [2] in the vacuum of space the ink would boil dry.
http://www.spacepen.com/Public/Technology/index.cfm[/QUOTE]
I confess to falling into the trap of posting from memory.
However I found this http://www.esa.int/esaCP/SEM9YN7O0MD_index_0.html which would appear to be a reliable source. That confirms that a standard ball point pen will work in space.
I have found other sites that mention that normal Lead pencils were used in the Mercury and Gemini missions. One of the reasons stated as looking for a replacement was that they were looking for a writing implement that was not flammable in the 100 Oxygen atmosphere.
100% pure oxygen?? I don't think so, oxygen is poisonous above certain levels.
200 miles above sea level?
2
2scoops0406
Hmm, not very clear on my part. Pure oxygen is poisonous at any altitude. After all the atomsphere is ~80% Nitrogen.
Breathing pure oxygen for short periods is not toxic. But prolonged breathing of pure oxygen has un-wanted side effects. It can disrupt the transfer of gases in the lungs, blocking the transfer of carbon dioxide from the blood into the airways and thus and lead to lowered levels of oxygen in the blood.
http://www.newscientist.com/article/mg13217964.800.html
http://www.newscientist.com/article/mg13217964.800.html
Possibly because it was easy to bleed off a feed of oxygen from a propellant tank than to provide heavy compressed air storage tanks.
Sponsored Links
