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Originally posted by pepsi78
Dude, do you have any clue as to what a minimum boundary is??? 100MeV protons with a flux GREATER THAN 100 particles/cm2-sec is the MINIMUM present in the SAA, not the MAXIMUM. That's just what defines the beginning of the SAA, the maximum can vary over time. In any case, I haven't seen you provide the first lick of evidence for the flux present outside the magnetosphere. All you've done is sit there pretending to attack my arguments without a shred of supporting evidence. I'm growing quite tired of destroying your arguments with proof only to have you come back to the same argument without any proof.
I am telling you the flux inside the magnetosphere is not biger than outside.
I can give you alot of reasons for this.
1 the moon blocks part of the particles heading to earth.
2 some of the particles get traped in the van alen belts.
3 the magnetic field also is responsible for pushing particles away.
This with look at the north pole or look at the anomaly in the van alen belt is just plain sily.
I was not even talking about particles in the van alen belt, and about the north pole you got a biger flux because you got a hole in the magnetosphere at north pole it's where it comes real close to earth, so the flux from outside is very close to earth, in some parts of the north pole there is no magnetic field, so that explains it.
Originally posted by pepsi78
reply to post by ngchunter
For your answer , you will never have a big flux in earth's orbits , the magnetic field deflects a good part of them.
This is silly to insist that the sama particle flux on the moon is present in earth's orbit.
Originally posted by pepsi78
Who exactly did you hope to fool with this statement? Me? I'm insulted. Suddenly you seem to have overlooked the fact that in order for there to be high energy gamma rays, GCRs must first collide with a heavy metal.
Or with the heavy atoms in the moon soil.
Aluminum is not a heavy metal, it therefore prevents the formation of excessive EM radiation in the first place!
I'm not even talking about the space jorney to the moon yet, I'm strictly talking about what happened on the moon.
You did bring this subject in to our conversation. so I quoted you on it on the subject of the discussion, telling you that by hitting the moons soil EM radiation would be generated in the form of gamma and it would penetrate the hull of the craft, as in particles crashing on the moon , generating gamma, and then hitting the craft's hull.
Aluminium offers no important protection to gamma rays.
I aslo stated that particles traveling near speed of light would penetrate the aluminum hull, and that is because you had a thin aluminum hull.
Any way this is irelevaant on who is right, since most of the time the astronauts were outside the LEM exposed to radiation.
This is precisely why thin layers of aluminum are a GREAT choice for spacecraft construction as opposed to lead,
Yea, not when your talking about high energy EM types, protection with aluminium in this case offers no protection, since particles colide with the moon's surface and produce gamma rays and x-rays.
The fibrous insulation they used beyond the thin lead skin is even better for blocking particles without causing excessive EM radiation backscatter.
To bad astronauts were on the moon in the craft, where the soil of the moon did cause such events.
Lead is not even desireable, aluminum is great. Yes, you could use 6 feet of lead, but that is the most inefficient worst way to do it.
You use 6 feet of lead for electro magnetic radiation, it's the only protection for this type of radiation.
The majority of protons that travel in space have a range of 70- to 100 mev in general, exceptions are the some protons reaching mejurments of GEV
The ISS goes into the SAA an average of an hour a day. You're wrong again, as usual.
you're the one arguing that no GCRs make it through the magnetosphere anyway (which is also wrong), therefore the magnetosphere is a treasure trove of particle radiation, including trapped GCR particles. It's an area of particle density because that's what it does, it traps particles
The SAA is a low hanging part of it and the ISS passes through it constantly, proving that GCRs are not lethal to the crew,
either through interactions with the aluminum hull producing EM radiation, or through direct interactions.
So you're admitting that every single apollo mission up till 11 was real then? Thank you. You never made this clear before, so I had to address these points, glad you're ok with the journey to the moon. Don't worry though, I'm working hard to resolve your fears that the radiation on the moon is enough to be lethal.
Originally posted by ngchunter
The majority of protons that travel in space have a range of 70- to 100 mev in general, exceptions are the some protons reaching mejurments of GEV
This live data from GOES begs to differ:
www.swpc.noaa.gov...
Clearly, in our neck of the woods lower energy protons are more abundant. None of them are that high though, and clearly the background flux of cosmic radiation is very very very low, nothing to be concerned with.
Originally posted by pepsi78
So you're admitting that every single apollo mission up till 11 was real then? Thank you. You never made this clear before, so I had to address these points, glad you're ok with the journey to the moon. Don't worry though, I'm working hard to resolve your fears that the radiation on the moon is enough to be lethal.
No to the contary I don't want to get in to this discusion yet,
I'm leaving it out since the subject is something else and I have no idea why you are bringing it up since it has nothing to do with EM emmisions, since aluminium is null against pure form of high EM radiation type.
So far you have proved jack.
Originally posted by pepsi78
Originally posted by ngchunter
The majority of protons that travel in space have a range of 70- to 100 mev in general, exceptions are the some protons reaching mejurments of GEV
This live data from GOES begs to differ:
www.swpc.noaa.gov...
Clearly, in our neck of the woods lower energy protons are more abundant. None of them are that high though, and clearly the background flux of cosmic radiation is very very very low, nothing to be concerned with.
Too bad the article does not specify the location, it could be inside the magnetosphere or in our skys.
It could be very well an astronomic observer from earth looking at the skys.
If the ISS go's in to part of the van alen belts prove it with an article, othewise drop it. Your articles sustains no such thing.
I've proven the hull wouldn't generate much EM in the first place. As such, there's no significant EM for the command module to block. You just don't get it, without significant EM being generated from the hull, every apollo mission up till 11 is entirely possible and real.
[edit on 22-2-2008 by ngchunter]
Originally posted by pepsi78
I've proven the hull wouldn't generate much EM in the first place. As such, there's no significant EM for the command module to block. You just don't get it, without significant EM being generated from the hull, every apollo mission up till 11 is entirely possible and real.
[edit on 22-2-2008 by ngchunter]
That is not a valid theory on the moon,
and even if it were and of course it is not all of this is irelevant to this part of our disscusion because they were outside the craft most of the time on the moon.
Originally posted by pepsi78
The SAA is a low hanging part of the van allen belt.
"The South Atlantic Anomaly (or SAA) is the region where Earth's inner van Allen radiation belt makes its closest approach to the planet's surface."
en.wikipedia.org...
This is BASIC information that anyone claiming to be an expert on the radiation environment of space should already know. ISS passes through this all the time unscathed.
[edit on 22-2-2008 by ngchunter]
You keep deraling the subject, I was not even insisting on energy hazards of direct particles impact on the hull of the craft.
The main subject is EM emissions on the moon.
Since the aluminium can as you call it protects from particles as you say, there is no reaction.
I do not even know how we got here, I was talking about gamma radiation.
You just derailed the subject in this area when I keep insisting that it's less of an importance for me since I'm talking about something else.
I could say with a confort that due to the lack of reaction of particles in earth orbit you proved absolutly nothing, since particle impact with the aluminium can as you say do not cause reactions, and since on the moon there is a whole difrent story.
I never said it caused no reactions, that's a lie. I said it caused significantly weaker and fewer reactions.
However reading upon an article it states that the ISS does pass spending 20 minutes in the SAA but too bad for you... the astronauts have to recuperate after passing within the SAA , an exposure of 20 minutes gives the body time to recuperate, anything above 20 minutes would cause astronauts problems and this is only posible with good shielding.
The apollo mission spent over 30 minutes in the belts. on going to the moon and 30 on return.
the ISS shielding is made of 1.89 g/cm2of aluminum, 0.218 g/cm2of Nomex® honeycomb wall, 0.08 g/cm2of Nomex® cloth, 0.06 g/cm2Durette® batting, and 0.72 g/cm2silicone rubber. The 1.89 g/c
Now I ask you, how about Apollo? care to specifiy the shielding of the craft as in material and thiknes.
But I told you this is irelevant, gamma rays would kill the astronauts on the moon.
I still can't seem to find reason for the apollo adventures.
I never said it caused no reactions, that's a lie. I said it caused significantly weaker and fewer reactions.
If you want to suggest that Apollo's shielding is not enough for the van allen belts the burden of proof is on YOU to provide the specs and prove it to be insufficient. You STILL have not shown that the radiation beyond the belts is sufficient to kill the crew. I've already shown that the flux of particles coming from the moon at gamma wavelengths is small at best, not enough to be lethal. I've already shown that the proton flux beyond the main belt is tiny when the sun is relatively quiet (like now). It doesn't matter one iota that GCRs create high energy gamma rays when they hit heavy elements on the moon, we're only talking about 1 or less photon per minute here.
Originally posted by pepsi78
I never said it caused no reactions, that's a lie. I said it caused significantly weaker and fewer reactions.
This is even more funnny, you do not know in what direction to head to.
First you come and state that your aluminium can does wonders, then you come and say in an atempt to prove earth orbit is like the moon that "you know we got gamma rays here too and it's no harm."
It's only natural to compare the 2 objects to show you it's beyond any doubt that the moon does not compare to earth orbit to gamma radiation.
The reality of things.
Earth in gamma ray.
Moon in gamma ray
Nasa lied , and lied before.
Nasa stated that the other space around the moon is hoter than the moon in gamma emissions.But any idiot can notice that the picture shows something else.When nasa took a look at the picture they were shocked.
If you want to suggest that Apollo's shielding is not enough for the van allen belts the burden of proof is on YOU to provide the specs and prove it to be insufficient. You STILL have not shown that the radiation beyond the belts is sufficient to kill the crew. I've already shown that the flux of particles coming from the moon at gamma wavelengths is small at best, not enough to be lethal. I've already shown that the proton flux beyond the main belt is tiny when the sun is relatively quiet (like now). It doesn't matter one iota that GCRs create high energy gamma rays when they hit heavy elements on the moon, we're only talking about 1 or less photon per minute here.
Yea calculations done by NASA.I do not trust nasa it lied before.
And what photons are you talking about?
Protons are other particles , it's not important for a proton to colide with a photon to produce the efects,
it will simply produce the effect on impact with other atoms in the moon soil.
Are you talking about photons as particles traveling and hiting the moon,
Wrong.
because that does not matter, you are giving me specifications on a totaly difrent particle.
As for the apollo shielding I find it many times inferior to that of the ISS.
The majority of particles are betwen 70 - 100 and higher.
Originally posted by ngchunter
His fellow prisioners were not exactly his family, he was married and was not allowed to have direct contact with his wife during his stay. The length of their detention is the key point, not where it occurs. For goodness sakes, Neil was forced to spend his birthday locked in the LRL. No wonder he was depressed.
Originally posted by -bigbrain-
youtube.com...
Originally posted by ngchunter
His fellow prisioners were not exactly his family, he was married and was not allowed to have direct contact with his wife during his stay. The length of their detention is the key point, not where it occurs. For goodness sakes, Neil was forced to spend his birthday locked in the LRL. No wonder he was depressed.
Imagine Armstrong went really to the Moon and walked on its ground. Nobody did it before.
He had to overcome his fear, he had to confront death, he went there at his own risk and peril, he ran along a road full of hazards, he endangered his life, he had to overcome many obstacles and unforeseen events.
He did an incredible achievement, an astonishing exploit, he walked on an unknown world, he saw a landscape that took his breath away, it seemed to him to live in a surreal environment, he were amazed, astonished, greatly surprised, enchanted, bewitched, spellbound.
He was very pleased, very contented, very glad, very happy.
He felt the most strong, invincible, able, brave, courageous, fearless, valiant, bold man in the world.
Three weeks after his incredible enterprise, in this press conference he should be the most enthusiastic, excited, elated, euphoric, thrilled, satisfied, pleased, gratified, contented man in the world.
But his guilty conscience doesn't allow him to be pleased and his behaviour shows that he is ashamed of himself because of the BIG FRAUD in which some authoritative person convinced him to partecipate for the glory of HIS COUNTRY.
[edit on 10-3-2008 by -bigbrain-]