Originally posted by rde But people don't explode in space. Their blood would boil, and there'd certainly be a little, er, swelling, but they wouldn't explode. And their eyes wouldn't pop out, Arnie-like.
The answer is that the scene in '2001: A Space Odyssey' where astronaut Bowman makes a space-walk without a helmet is just about right. Your blood would not boil. You would survive for about ninety seconds, you wouldn't explode, but you would only remain conscious for about ten seconds.
There is nothing specifically concerning 'eye-pop-out' syndrome, but it does say that "water vapor will form rapidly in the soft tissues . . . [which] will cause marked swelling of the body to perhaps twice its normal volume."
Well, if Geoffry Landis says so, that's good enough for me. If you're looking for a really good novel, btw, check out his Mars Crossing.
As for volunteers: the russians are a couple of years away from suborbital tourist flights, for a trifling e100,000. I'm sure if you asked nicely, they'd leave a window open to see what happened.
Even though you might survive, it doesn't mean you wouldn't have some irreversible tissue damge.
"Neurological problems, including blindness and other defects in vision, were common after exposures, but usually disappeared fairly rapidly."
Divers who decompress too quickly get 'the bends' from localised evolved Nitrogen bubbles in the blood.
NASA CR-1223: (Personal communication, James Skipper, NASA/JSC Crew Systems Division, December 14, 1994.)
"At NASA's Manned Spacecraft Center (now renamed Johnson Space Center) we had a test subject accidentally exposed to a near vacuum (less than 1 psi) in an incident involving a leaking space suit in a vacuum chamber back in '65. He remained concious for about 14 seconds, which is about the time it takes for O2 deprived blood to go from the lungs to the brain. The suit probably did not reach a hard vacuum, and we began repressurizing the chamber within 15 seconds. The subject regained conciousness at around 15,000 feet equivalent altitude. The subject later reported that he could feel and hear the air leaking out, and his last conscious memory was of the water on his tongue beginning to boil."
Woah! Cool! I think that is quite interesting. I counted about 14 seconds that it took for them to start boiling so I guess there was no mistake between the movie and the space man. I always thought that it was cool how Arnies blood boiled, but I never knew that was true!
Your blood is at a higher pressure than the outside environment. A typical blood pressure might be 75/120. The "75" part of this means that between heartbeats, the blood is at a pressure of 75 Torr (equal to about 100 mbar) above the external pressure. If the external pressure drops to zero, at a blood pressure of 75 Torr the boiling point of water is 46 degrees Celsius (115 F). This is well above body temperature of 37 C (98.6 F). Blood won't boil, because the elastic pressure of the blood vessels keeps it it a pressure high enough that the body temperature is below the boiling point-- at least, until the heart stops beating (at which point you have other things to worry about!). (To be more pedantic, blood pressure varies depending on where in the body it is measured, so the above statement should be understood as a generalization. However, the effect of small pockets of localized vapor is to increase the pressure. In places where the blood pressure is lowest, the vapor pressure will rise until equilibrium is reached. The net result is the same.)
Has anyone seen "Vanilla Sky", the Tom Cruise film?
I don't want to spoil the film for you so if you haven't, you might want to look away from any replies that I get to this:
Did you think that the 'LE Corporation' was very like 'Rekall'?
It's a much more complex film, I didn't even realise it was SciFi until about half an hour from the end, I was expecting a Romantic Comedy Thriller. It had all that too, but it had the same "Is this real? - Is this a dream?" element that 'Total Recall' did. It was also a little sad.
I've just watched both 'Vanilla Sky' and 'Total Recall' again and their are certainly similarities, though in 'Vanilla Sky'
I think it is clear that David Aames is dead and his mind is living on in a Lucid Dream
whereas in 'Total Recall' I can still not say for certain whether he is in reality, in a dream, or having a freeform delusion from a schizoid embolism and likely to get a Lobotomy when he wakes up.
I would say it is unlikely to be reality - far-fetched, alien technology on Mars, secret agents - and these are the things he asked for - unlikely coincidences, but then his subconcious might remember them - isn't that's why he chose a brunette.
The other twist is that he is not Doug Quaid at all, but Hauser, a friend of Cohagen and the author of his own new identity. That really is a twist too far, which tends to go against the reality idea. The old video in which secret agent Quaid/Hauser explains that Quaid/Hauser himself contrived the memory loss scheme as a way of catching rebel leader Kuato could have been falsified. It isn't clear whether Quaid doesn't believe it, or if he just disregards it. Kuato tells Hauser “A man is defined by his actions, not his memories†and he seems to act on instincts rather than memories.
He could have just gone back to sleep that first morning and dreamt the whole thing - but dreams are not usually so lucid with so much detail - At the end of the movie Quaid says “I just had a terrible thought: what if this is a dream?†The scene also fades to white (rather than black), to suggest a dream-like state.
That leaves the Lobotomy - that would rule out any Total Recall 2 - the visit from Doctor Edgemar and his wife on Mars would make that a certainty is it wasn't for the sign of Edgemar sweating, but even that could be part of the freeform delusion from a schizoid embolism. In the DVD special feature, one of the filmmakers implies that Quaid was indeed lobotomized during a botched memory implant.
I also want an explanation of why the mutant taxi driver was a mole. What did he have to gain? I don't think he had 5,4 or even any children.
Change of subject; but I couldn't find a better place to post this:
Remember the security scanner scene near the start of Total Recall - a long glass corridor at the entrance to the subway in which Arny walks down with a gun, setting off every alarm?
US civil liberties campaigners are opposing the introduction of security scanners that visually remove passengers' clothes.
The powerful new security scanners are set to be installed at airports in Washington DC, New York, Los Angeles and other major cities.
Passengers will be shut in the glass booths while an incredibly detailed 3D image is made of their body.
The booths close around the passenger and emit 'millimeter waves' that go through cloth to identify metal, plastics, ceramics, chemical materials and explosives, according to the Transport Safety Authority.
"People have no idea how graphic the images are," said Barry Steinhardt, director of the technology and liberty programme at the American Civil Liberties Union.
To protect the passengers privacy, their faces will be blurred and the images will not be saved.
Lara Uselding, a TSA spokeswoman, said passengers were not obliged to accept the new machines.
"The passengers can choose between the body imaging and the pat-down," she said.
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