Originally posted by DJW001
reply to post by ProfessorAlfB
Jarrah White a fraud?
He has been so thoroughly busted that every time you bring up his name, everyone else on this thread laughs out loud. If you refuse to read the entire
thread out of laziness, at least read the six or seven posts starting here:
Well, I had a read and what a supprise, I find that you are the one that thinks he busted him!
OK, so he used the results for an unshielded spacecraft, perhaps he read the paper in a hurry and he used that first table because he was in a hurry
to post something in response to pressing questions? Who knows?
He makes mistakes, we all do, but you can't simply denounce all the information in his "MoonFaker" videos as nothing but lies, especially when much of
what he says can be seen to be patently true.
Thomas Edison made lots of mistakes too, like stubbornly sticking to DC power when Tesla and Westinghouse had proved AC to be the better system for
distributing it, but you can't simply denounce the rest of Edisons other work as completely fraudulent!
Its pays to keep an open mind, but yours is obviously closed.
As for radiation exposure in LEO, here is a quote from wikipedia:
"Subatomic charged particles, primarily protons from cosmic rays and solar wind, are normally absorbed by the earth's atmosphere, when they interact
in sufficient quantity their effect becomes visible to the naked eye in a phenomenon called an Aurora. Without the protection of the Earth's
atmosphere, which absorbs this radiation, crews are exposed to about 1 millisievert each day, which is about the same as someone would get in a year
on Earth, from natural sources. This results in a higher risk of astronauts' developing cancer. Radiation can penetrate living tissue, damage DNA, and
cause damage to the chromosomes of lymphocytes. These cells are central to the immune system and so any damage to them could contribute to the lowered
immunity experienced by astronauts. Radiation has also been linked to a higher incidence of cataracts in astronauts. Protective shielding and
protective drugs may lower the risks to an acceptable level.
The radiation levels experienced on ISS are about five times greater than those experienced by airline passengers and crew. The Earth's
electromagnetic field provides almost the same level of protection against solar and other radiation in low Earth orbit as in the stratosphere.
Airline passengers, however, experience this level of radiation for no more than 15 hours for the longest intercontinental flights. For example, on a
12 hour flight an airline passenger would experience 0.1 millisievert of radiation, or a rate of 0.2 millisieverts per day; only 1/5 the rate
experienced by an astronaut in LEO."
So even in the shielded environment on the ISS, every single day the Astronauts absorb a dose the same as someone would get in a year on Earth from
natural sources! So much for the complete safety of a spacecraft in LEO!
edit on 3/2/13 by ProfessorAlfB because: (no reason given)