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Wayston
March 22nd, 2011, 11:48 PM
How come if you're in one hallway of a building you're good, and a couple hallways down the right you're instantly exposed to a lethal dosis of radiation? Shouldn't it be a bit more gradual?

DigiFluid
March 22nd, 2011, 11:50 PM
I would think it would depend on the construction materials of the building. Certain materials block radiation more than others.

D Toccs
March 23rd, 2011, 12:47 AM
Well we don't really know that they were ok before they found the geiger counter. Given how crazy that geiger counter was going I would think that everyone in the building and even the people outside where Telford was would all have been exposed to dangerously high amounts of radiation.
Of course that's not how it will turn out, Greer/Covel and Wray/Michaels will be the only 2 people exposed to the radiation. Just like in SG1 Meridian all the Langaran scientists die from radiation poisoning, Daniel defuses the bomb and dies a day or two later from extreme radiation poisoning yet Jonas who was about 5 feet away from Daniel goes on to live happily ever after.

thekillman
March 23rd, 2011, 03:34 AM
How come if you're in one hallway of a building you're good, and a couple hallways down the right you're instantly exposed to a lethal dosis of radiation? Shouldn't it be a bit more gradual?

actually you could be safe from lethal radiation because of a sheet of paper.

various forms of radiations have highly varying degrees of penetration. plus that the air itself could have become radioactive.

Tajis
March 23rd, 2011, 06:27 AM
How come if you're in one hallway of a building you're good, and a couple hallways down the right you're instantly exposed to a lethal dosis of radiation? Shouldn't it be a bit more gradual?

The dust could have also been contaminated. Wray complained about it, and they were inhaling a massive amount. Some forms of radiation are only dangerous if you consume contaminated substances.

The Destiny
March 23rd, 2011, 06:28 AM
actually you could be safe from lethal radiation because of a sheet of paper.

Really?

How cool is that! :D

DigiFluid
March 23rd, 2011, 06:36 AM
Really?

How cool is that! :D
Yeah it really depends. Certain types of radiation are blocked by something as simple and thin as paper, others will only be slowed down by a wall of lead. It really depends on the kind of radiation that's being....radiated.

Rylor
March 23rd, 2011, 07:47 AM
How come if you're in one hallway of a building you're good, and a couple hallways down the right you're instantly exposed to a lethal dosis of radiation? Shouldn't it be a bit more gradual?

Radiation gets weaker according to the inverse-square-law (assuming a point-shaped radiation source). So, if you double your distance the radiation dose reduces to 1/4, if you triple your distance the radiation dose reduces to 1/9, and so on. By getting a lot closer to the bomb the radiation dose could easily be several dozen times higher than what they were exposed to before.

Or it could be the contaminated dust, as Tajis mentioned. A radiation source inside the body is highly dangerous.

thekillman
March 23rd, 2011, 09:57 AM
Yeah it really depends. Certain types of radiation are blocked by something as simple and thin as paper, others will only be slowed down by a wall of lead. It really depends on the kind of radiation that's being....radiated.

and some only by a lightyear of lead

Rylor
March 23rd, 2011, 10:14 AM
and some only by a lightyear of lead

Or in the words of Jack O'Neill: "Hey! If you'd been listening, you'd know that Nintendos pass through everything." :D

garhkal
March 23rd, 2011, 11:45 AM
Well we don't really know that they were ok before they found the geiger counter. Given how crazy that geiger counter was going I would think that everyone in the building and even the people outside where Telford was would all have been exposed to dangerously high amounts of radiation.
Of course that's not how it will turn out, Greer/Covel and Wray/Michaels will be the only 2 people exposed to the radiation. Just like in SG1 Meridian all the Langaran scientists die from radiation poisoning, Daniel defuses the bomb and dies a day or two later from extreme radiation poisoning yet Jonas who was about 5 feet away from Daniel goes on to live happily ever after.

Cause Jonas had screening in front of him... plus some forms of radiation dwindle out quickly the further out you go.


Or it could be the contaminated dust, as Tajis mentioned. A radiation source inside the body is highly dangerous.

Being they both admitted to breathing in a lot of dust, i feel that was more of it than the radiation in the air itself.

SG-1-AU
March 23rd, 2011, 03:15 PM
How come if you're in one hallway of a building you're good, and a couple hallways down the right you're instantly exposed to a lethal dosis of radiation? Shouldn't it be a bit more gradual?

Radiation exposure is based on distance, shielding, and exposure time. Radiation dose falls by the inverse square of distance (like gravity and other forces). For instance, if you see 1 Rem at 1 meter away from the source, you will see 0.25 Rem at 2 meters from the source.

For distance, radiation does not act like radio waves, but it is more like line of sight (only some time you can get radiation to reflect off surfaces, but this is a minor effect). Therefore, as you get to be more in the line of sight with respect to materials that can shield the radiation, the radiation will spike.

Now, with all that said, I know how to read a Geiger counter and those levels WERE NOT lethal for the amount of TIME they were exposed, it was just added for dramatic effect. I also don't understand how the levels did not change all that significantly from the hallway till when you were standing right next to the device.

All in all, this episode was not very factual about radiation and as a nuclear engineer, it pisses me off to always see the public be so misinformed about radiation and dosage.

SG-1-AU
March 23rd, 2011, 03:18 PM
Yeah it really depends. Certain types of radiation are blocked by something as simple and thin as paper, others will only be slowed down by a wall of lead. It really depends on the kind of radiation that's being....radiated.

Alpha - Blocked by dead skin (or paper) (dangerous if consumed)
Beta - Blocked by all of your skin together (dangerous if consumed)
Gamma/Neutron - Pretty much go through anything. 2" of lead will reduce gamma by 90% (this is called tenthing factor). Gamma is reduced by dense materials like lead and tungsten, neutrons are reduced by materials high in hydrogen (such as water and certain types of plastics. Lead can also work).

D Toccs
March 23rd, 2011, 04:26 PM
Cause Jonas had screening in front of him... plus some forms of radiation dwindle out quickly the further out you go.

Jonas didn't have screening in front of him. Daniel shot the screen and then jumped through it. Jonas was about 5 feet away from Daniel with no screening when Daniel disarmed the bomb. Not to mention they later reveal that all the Langaran scientists who have worked on the project suffered horrible deaths from radiation poisoning and Jonas had been working on the project for yeas.

DigiFluid
March 23rd, 2011, 04:33 PM
He was further than that by at least double. Also: re-read the posts above about distance to decay ratios.

zainea13
March 23rd, 2011, 08:22 PM
yeah, the old "duck-and-cover" method. isn't so bad after all. they reviewed the "nuclear preparation" thing last year. And released that in the chance of a nuclear threat, get to the innermost room of the building (i.e. most protected from outside walls) and get under a desk (because the more between you and the radiation the better!)

The Destiny
March 24th, 2011, 05:09 AM
Now, with all that said, I know how to read a Geiger counter and those levels WERE NOT lethal for the amount of TIME they were exposed, it was just added for dramatic effect. I also don't understand how the levels did not change all that significantly from the hallway till when you were standing right next to the device.

All in all, this episode was not very factual about radiation and as a nuclear engineer, it pisses me off to always see the public be so misinformed about radiation and dosage.

Well.. after all, Wray is not a scientist :)

I didn't really see, was the Geiger counter at a certain level or was it at it's top where the arrow just couldn't go any further. They were exposed for quite a while though, an hour, maybe a couple or hours?

At Tsjernobyl they cleaned up the radioactive debry while wearing lead sheets and only being outside for 1 minute or so at a time before switching with another group. Most still died from radiation.

D Toccs
March 24th, 2011, 05:52 AM
All in all, this episode was not very factual about radiation and as a nuclear engineer, it pisses me off to always see the public be so misinformed about radiation and dosage.

Saying, "even though this geiger counter is going crazy, we're still relatively safe for the moment" just isn't as dramatic as saying, "oh my god we've been exposed, WE'RE GONNA DIE" :P

garhkal
March 24th, 2011, 12:53 PM
Na..

its

"Wezza gonna die!" (as a gungan runs up)

carmencatalina
March 24th, 2011, 01:52 PM
All in all, this episode was not very factual about radiation and as a nuclear engineer, it pisses me off to always see the public be so misinformed about radiation and dosage.

I'm a scientist (biologist) - science fiction constantly gets stuff wrong. They are so often just ridiculous with biology and medical facts and procedures (SG-1, SGA and SGU - all equally guilty) that I assume a lot of the other stuff is just as wrong.

Greenfire32
March 24th, 2011, 01:57 PM
I'm a scientist (biologist) - science fiction constantly gets stuff wrong. They are so often just ridiculous with biology and medical facts and procedures (SG-1, SGA and SGU - all equally guilty) that I assume a lot of the other stuff is just as wrong.

As Mckay would say:

".....but....Biologist":mckay:

Shadow_7
March 24th, 2011, 03:37 PM
It could also be that Nirti corrected the damage done by radiation on that episode with the ancient DNA device on the other episode. With regards to Jonas.

I much prefer the pew pew episodes versus the who's gong to diffuse the bomb(s) one. Rock, paper, scissors, you're the red shirt. But I don't wanna........

thekillman
March 24th, 2011, 11:34 PM
i'm not an expert of the stuff. (and i couldn't see the exact height of the radiation)

but given the history of naquahdriah, plus the relatively high exposure plus an unknown exposure time, walking out of there would NOT have been very good on the long run. this includes but isn't limited to various forms of cancer, genetic damage and paranoia and delusion.


the alternative at this point wasn't exactly... nice either. besides Wray is not a scientist, so the gamble was more or less good. not to mention that getting someone inside with enough protection to last, would be even harder, and more time consuming

Ben 'Teal'c would WIN!!' Noble
March 25th, 2011, 08:58 AM
i'm not an expert of the stuff. (and i couldn't see the exact height of the radiation)

but given the history of naquahdriah, plus the relatively high exposure plus an unknown exposure time, walking out of there would NOT have been very good on the long run. this includes but isn't limited to various forms of cancer, genetic damage and paranoia and delusion.


the alternative at this point wasn't exactly... nice either. besides Wray is not a scientist, so the gamble was more or less good. not to mention that getting someone inside with enough protection to last, would be even harder, and more time consuming

Yep I agree.

Steelbox
March 30th, 2011, 05:19 AM
Plus, as soon as they entered the crashed ship, that was a lethal exposure. And how is a geiger graded? Ex. 0 Bq to 1000 Bq or 0-10000000...?

mjwalshe
March 30th, 2011, 12:00 PM
How come if you're in one hallway of a building you're good, and a couple hallways down the right you're instantly exposed to a lethal doses of radiation? Shouldn't it be a bit more gradual?

well they didn't find the gigercounter for quite a while so I assume that wray looked at the reading and extrapolated from the time they had spent - and she did say back in season one that she was "over qualified"

garhkal
March 30th, 2011, 04:39 PM
True.. Plus who knows.. maybe as part of her IOA training/politician training, she received instructions for disaster preparedness.. which would include geiger counter reading!

mjwalshe
March 31st, 2011, 01:27 PM
True.. Plus who knows.. maybe as part of her IOA training/politician training, she received instructions for disaster preparedness.. which would include geiger counter reading!

well I have suspicions that wray is more than she seems "Hr Girl" is quite a good cover for a spook

garhkal
March 31st, 2011, 02:30 PM
Oh... So maybe she works for the NID..

mjwalshe
April 4th, 2011, 04:17 AM
Oh... So maybe she works for the NID..

well that was my thought she could be working for any number of intelligence agencies I am sure SIS DSG, FSB and the CIA would have their operatives working both in an avowed and non avowved basis.

garhkal
April 4th, 2011, 03:15 PM
Heck, one wonders what OTHER countries intelligence units, have operatives in the SGC.. deep under cover.