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Originally posted by DJW001
reply to post by FoosM
Thats all when and fine, but If the roles were reversed and I presented you this experiment, you would say
what does that have to do with the radiation found in interstellar space? And where are the tests that showed NASA knew their glass was capable of blocking such radiation? We all know it was great as a heat shield, but radiation? Was it thick enough, was it the correct composition?
That goes for the LM and the helmets of the Astronauts themselves.
Yes, it's all about you, not facts. Your question about the windows has been answered in principle. If you bring it up again, please provide calculations to prove that the specific alumino-silicate glass was insufficient to block the radiation levels experienced on the actual missions... otherwise you will be considered petulant and childish and be ignored. Why do you keep forgetting that you are the one trying to prove something here? If you have facts to support your case, why don't you bring them to the table?
Originally posted by CHRLZ
It was a dark and stormy night, as FoosM vouched safe:
I told you that there is a possibility that the one and only returned hasselblad went to that museum.
Anyway, I think I have definitive proof they have or had the Apollo 14 Hasselblad.
I await a certain poster's apology.
Is the 'certain poster' me, FoosM? Why do you play games - why not come out and say what you mean? And why did you not post this earlier, and why did you not answer the question about relevance to this thread?
This, if true, certainly deserves a thread of its own. The story of how it got there, and why sources from NASA thru wiki thru Hasselblad are seemingly unaware of it may well be interesting.
FTR, and as I mentioned earlier, I *really* hope this is true. I'll be going to kansas asap!!
Originally posted by DJW001
What items missing from a museum has to do with anything, I don't know.
Originally posted by FoosM
Well first of all thank you for the apology.
And if you think about it, there was no reason to put yourself in a situation where that would have to happen.
Regarding your questions:
1. Yes that poster was you, but to tell you the truth, in my haste, I forgot which person to address the post to.
So I didnt mean anything bad by it...
2. No, I cant take credit for finding the Museum, but probably can take credit for initiating the hunt for it.
3. I didnt have the photo for evidence, actually, I had no evidence that the Museum had THAT specific camera, all I had was heresy
and evidence that they had Hasselblads in general and signed mags.
So I just wanted to get the facts straight about it myself and so I looked into it further and presto, found that picture on the web.
Why the camera issue? Its really not an issue for me, its more of, I like to get the facts straight.
However... for some of you Apollo defenders it might be an interesting point when debating J.W. and David Groves(sp?). I sorted of tried to allude to this earlier.
Well if you go to Kansas, you can confirm 100% its existence and maybe you might discover the back story to this camera. I actually had no idea they were gold plated inside.... maybe thats why the robbery?
Originally posted by FoosM
And where are the tests that showed NASA knew their glass was capable of blocking such radiation? We all know it was great as a heat shield, but radiation? Was it thick enough, was it the correct composition?
Originally posted by ppk55
2. The moon rock given to the dutch prime minister by the Apollo 11 astronauts that turned out to be petrified wood.
1. The 700 boxes of video tapes and telemetry that have vanished, including the only tapes with the high quality slow scan TV images. These today would provide the best quality TV images ever seen. Gone.
2. The moon rock given to the dutch prime minister by the Apollo 11 astronauts that turned out to be petrified wood.
3. The missing moon rocks all over the globe.
4. and now a whole host of items have vanished from a museum, including a 70mm Apollo Hasselblad camera.
Soviet In-flight Jacket
Oleg Makarov Soyuz T-3 Launch key
Dobrovolsky's Communist Party Card
Flown TM-2 Soviet World Map
53 Leaflets of WWII Aerial Propaganda
75 Each "Top Gun" Story Boards
Originally posted by AgentSmith
Originally posted by FoosM
And where are the tests that showed NASA knew their glass was capable of blocking such radiation? We all know it was great as a heat shield, but radiation? Was it thick enough, was it the correct composition?
*Yawn*, as you're too lazy and incompetent as usual to find information for yourself Foos, here you go....
Combined space environment effects on typical spacecraft window materials final report, jun. 1964 - jun. 1965
edit on 13-9-2010 by AgentSmith because: Broken link
determine the optical degradation resulting from such exposure with the damage criterion being the observed change in spectral transmittance.
Corning No. 1723 aluminosilicate glass, which changed significantly during the irradiation, still had reasonably high transmittance at the end of the test due to its very high initial transmittance (about 99%).
All of the plastics tested degraded to near opacity. As mentioned previously, this is probably due in part to the heating which resulted from accelerated testing. However, it is believed that the results do indicate poor radiation resistance of these materials, based on the assumption that regenerative destruction would not begin unless significant degradation, not dependent on a rate effect, had taken place first. After the initial degradation, absorption of the simulated solar energy heats the sample, producing more discoloration, absorbing more energy, etc.
Mention should be made of the existence of a radiation belt of high- energy electrons, created by the high-altitude nuclear explosion (Starfish) over Johnston Island on July 9, 1962 and to a slight extent later by Russian tests. The first informa- tion after the explosion was compiled by Hess (Ref. 43) from data taken from then existing satellites, primarily Telstar I. He estimated a peak flux of about 1. 6 x 109 electrons/cm2-sec with energies to 7 mev. According to the estimate of McIlwain (Ref. 25),the lifetime may be long -- possibly ten years.
Rockets have been flown into the auroral zones and have detected the presence of energetic protons and electrons. According to Dessler (Ref. 38), the proton flux above 100 kev lies generally between 105 protons/cm2-sec and 106 protons/cm2-sec. The electrons were nearly monoenergetic at around 6 kev (McIlwain, 1960). Other observations indicated 3 to 5 kev electrons with flux to lo1' electrons/cm2-sec.
The high energy particles, some of which may penetrate the vehicle and can also produce energetic bremsstrahlung, will be the greater hazard to the astronauts. As a worst case, using 108 protons/cm2-sec and 3 x lolo electrons/cm2-sec,and assuming the vehicle to remain in the belts for 5 hours
(1. 8 x lo4 sec), the window would encounter 1.8 x 1012 protons/cm2 and 5.4 x 1014 electrons/cm2.
Originally posted by FoosM
Or are you to "lazy and incompetent" to share that info with us?
Originally posted by FoosM
You do know that these tests were to:
determine the optical degradation resulting from such exposure with the damage criterion being the observed change in spectral transmittance.
optical degradation... does that have anything to do with shielding?
Corning No. 1723 aluminosilicate glass, which changed significantly during the irradiation, still had reasonably high transmittance at the end of the test due to its very high initial transmittance (about 99%).
What does that mean. Does that mean radiation had no problem passing through the material? Is that good as a shield?
All of the plastics tested degraded to near opacity. As mentioned previously, this is probably due in part to the heating which resulted from accelerated testing. However, it is believed that the results do indicate poor radiation resistance of these materials, based on the assumption that regenerative destruction would not begin unless significant degradation, not dependent on a rate effect, had taken place first. After the initial degradation, absorption of the simulated solar energy heats the sample, producing more discoloration, absorbing more energy, etc.
As a layman, that doesn't sound so positive.
Can you explain how this actually sounds good?
I mean it sounds like these people wouldn't have been able to see out there windows after a period of time.
And if that is true, how did they manage to get all those clear photos through their windows?
NASA did end up using aluminosilicate right?
I found this in the article to be interesting:
Its 1965 and:
Mention should be made of the existence of a radiation belt of high- energy electrons, created by the high-altitude nuclear explosion (Starfish) over Johnston Island on July 9, 1962 and to a slight extent later by Russian tests. The first informa- tion after the explosion was compiled by Hess (Ref. 43) from data taken from then existing satellites, primarily Telstar I. He estimated a peak flux of about 1. 6 x 109 electrons/cm2-sec with energies to 7 mev. According to the estimate of McIlwain (Ref. 25),the lifetime may be long -- possibly ten years.
Rockets have been flown into the auroral zones and have detected the presence of energetic protons and electrons. According to Dessler (Ref. 38), the proton flux above 100 kev lies generally between 105 protons/cm2-sec and 106 protons/cm2-sec. The electrons were nearly monoenergetic at around 6 kev (McIlwain, 1960). Other observations indicated 3 to 5 kev electrons with flux to lo1' electrons/cm2-sec.
Aural zones? First I ever heard of this, and secondly, why is that important for Apollo?
Where do they base this 5 hours from?
Originally posted by AgentSmith
Originally posted by FoosM
Or are you to "lazy and incompetent" to share that info with us?
... At the end of the day, there was a 50/50 chance it would be in my favour and for all I know you wouldn't bother reading it anyway. I also thought it looked quite complicated with lots of charts and numbers so if I just blagged it any readers would just assume I had one up on you and I'd get loads of stars and stuff and I'd feel better about myself knowing I'd won another round without even being right.
I failed miserably and look like a right idiot But I haven't had as much practise as you so I haven't got the technique down to a T just yet. I'm not sure it suits me to be honest so I'll probably try and avoid it in the future..
Touche anyway, well done
How Stanley Kubrick faked the Apollo Moon Landings