@MrOregona230 It's called Cherenkov Radiation. Sparing all the technical mumbo jumbo, protons are emitted and move in such a way that they exceed the speed of light for their medium (in this case the atmosphere) and phase shift, which emits a blue glow... or something like that. I'm not a physics major but it has to do with particles exceeding the speed of light within their medium as they are expelled.
@Krauser1226 Its actually not Cherenkov Radiation, but is commonly mistaken for that because of the similar color. Its actually caused by Ionized-air glow. Cherenkov Radiation can really only occur in more optically dense materials such as water.
@MrOregona230 The blue flash was due emited neutrons moving faster than speed of light in the air. The radiation at this level has killed almost all the cells of the exposed tissue in the body of scientist. Particularly, it kills the intestine cells. He was essentially dead seconds after exposure. Like a zombie. Without stomach cells working properly the chloridric acid and similars begin to dissolve him from inside to outside. And nutrients are no more absorved too. A very painfull death, sure.
There were 2 criticality accidents involving this fucking evil core. In both cases people died. However, the accidents actually enhanced the core and made it more potent. When it was later detonated in a test, it had a higher yield that exceeded expectations.
orau org*/*PTP*/*museumdirectory htm has some really good reports of criticality accidents in their museum library and a lot of other good stuff too, this is where I first learned of other accidents that have not been in the news, some of them rather recent.
In the Tokaimura Criticality Accident in Japan 1999, they were able to determine how much radiation people got from measuring the amount of radioactive zinc in 5 Yen coins, in the pockets of nuclear workers. The intense radiation made the coins radioactive. Two workers died.
"Tokaimura accident: Neutron dose estimates from 5-yen coins"
Oh, it happened because one worker poured too much enriched uranium solution into a container, while another worker stirred it with a wooden stick!
There was no falling coffee cup in reality... The half-sphere of beryllium accidentally slipped off the tip of the screwdriver, and the plutonium mass was supercritical for less than a second. RIP. I have no idea why they had to use their hands to begin with. It sounds stupid to me.
The one thing that sucks about knowing physics in this circumstance is that you have the capability to calculate how much time you have before you die. I can only imagine how terrible it must feel.
@vandius24@stxrynn there was another person present at the '45 experiment. And this one didn't die until 30 something years later, from cancer, probably related to the accident.
@Vandius24 That was a typo. I'm sure that ANYTHING can turn radioactive when absorbing a neutron, alpha and/or beta particle. The pieces of chalk that the scientist tossed to his colleagues were probably so irradiated to the point where it could be considered radiioactive waste.
The '1945' in this clip title is misleading, it's from a 1989 movie.
According to IMDB...
John Cusack's character, Michael Merriman, is a fictional composite; based primarily on Louis P. Slotin and (to a lesser degree) Harry K. Daghlian.
&
The incident with the plutonium hemispheres is based on two real life accidents that killed physicists Harry K. Daghlian and Louis Slotin in September 1945 and May 1946 respectively. Slotin had participated in the team that assembled the Trinity device.
Tungsten is a suitable raw material for radiation protection, more than 60% denser than lead, high radiation absorption (superior to lead). It can provide the same degree of protection as lead whilst significantly reducing the overall volume and thickness of shields and containers.
@ryanlak1234 Because no material exists that could stop the radiation. They'd have to be wearing a suit made out of 0.5m of lead to stop the gamma and a meter of water to stop the neutrons...
Tungsten is a suitable raw material for radiation protection, more than 60% denser than lead, high radiation absorption (superior to lead). It can provide the same degree of protection as lead whilst significantly reducing the overall volume and thickness of shields and containers.
@Shinydisc117 not really, the screw driver was to keep the half beryllium sphere from touching because thats what starts the fission reaction, the screw driver is not part of experiment protocol and other tools should have been used, when the screw driver slipped and the spheres met it made a critical reaction and a large burst of radiation, he saved the others lives with his quick reaction to remove the sphere, but recieved a fatal dose from standing over it, so it didnt matter what he used.
From "Fat man and Little Boy" Why this didn't explode: materials and other variables have to be just right to create a sustained incident. However, it is conceivable under certain circumstances that a criticality in a nuclear plant could become explosive, with meltdown of the core, it could attain the sphericality needed. Not likely, as it requires a forceful meeting of two masses of material. But a new quake could provide the force. Regardless, radiation is real, equals more cancers.
@knackerFacker according to what i read, the ammount of radioactive matterial used in experiments are limited to avoid accidental nuclear explotions, if the scientist (slotin) wouldn have removed the beryllium case the critical mass would have gone supercritical, melted and emited tons of nuclear radiation killin most of the ppl in the complex. That man saved their lives...
It requires mass bombardment of the materials, basically explosives forcing or separating atoms. What happened in the movie is exactly what happens in a nuclear power plant.
@knackerFacker The radioactive substances used in these experiments lacked the required concentrations to build up the level of energy needed in an atomic explosion. While still very dangerous and able to kill loads of people and get very hot, this surge wouldn't have lasted very long because the particles of radioactive material in the core "mixture" would have expanded from the heat generated and moved further away from each other and so the reaction rate would have died down again.
lol, Hollywood has to dramatize something so dramatic. unreal The wiki page said the dude was a hot shot thrill seeker and was warned not to keep doing it, he had done it close to a dozen times. Dumb ass.Kind of like John Cusak in real life?
This really happened. That man who disassembled the experiment when he realised what was happening was a hero because he probably saved the lives of the other ones in the room.
@jeff29992002 he threw chalk at them and told them to draw an outline of their feet exactly where they're standing on the floor. the reason for this being so he could calculate the distance to the source of the radiation and figure out whether they had received enough radiation to die from. he then said that they all would live, except for him because he had touched it.
This core actually killed 2 people and injured several more. There is tons of info about these accidents on Wikipedia, look for Louis Slotin and Harry Dahglian.
Nope, that's a pretty close approximation of what happened. That core was used at Bikini, and was pretty potent. The accident enhanced the core, and killed the physicist after a couple days. Same thing happened in Russia in the 80's I believe. Same kind of experiment. He lasted about a week.
@stxrynn No, it's a pretty terrible approximation of what happened. There were no bricks of lead shielding and the plutonium core was surrounded by two half-spheres of beryllium reflector material. At the time of the accident Slotin had his left hand on the beryllium sphere with his thumb inside the thumb-hole on its top and held a screwdriver in his right hand, maintaining separation of the two half-spheres.
There was no tense atmosphere; it was just a mundane, routine experiment.
@soylentgreenb Sorry, I meant the slip of the hemisphere, the blue flash, the prickling of the skin and resulting death of the physicist.. The sphere was also more potent after the accident. That was the close approximation I mentioned. Thank you for informing me of the mundane aspect of the experiment. I wasn't aware of that.
@stxrynn That was Los Alamos, New Mexico, not related at all to Bikini and the nuclear tests that happened there. Louis Slotin died nine days later and all his workmates survived as he predicted.
@stxrynn did you know that the same core that ended up killing Louis Slotin killed another physicist the year before this (1945) his name was Harry Daghlian (he lived another 25 days after the incident) and Louis Slotin did his experiment in 1946 not 1945 lol
These 'criticality accidents' (incidents in which a nuclear reaction is started accidentally) are rare because causing a nuclear reaction is a complicated procedure, performed by people who know what they're doing. Most of the few people ever to see a criticality accident died rather quickly.
Why the hell was he using the edge of a screwdriver to keep the core of a nuclear bomb from reacting?
GhostOfJulesVerne 6 days ago
1 000 ways to die brought me here =/
ntabiblaze 3 weeks ago
someone should teach cusak how to use calipers
scrudgey 3 weeks ago
Can anyone explain what would have caused the blue flash?
MrOregona230 3 months ago
@MrOregona230 It's called Cherenkov Radiation. Sparing all the technical mumbo jumbo, protons are emitted and move in such a way that they exceed the speed of light for their medium (in this case the atmosphere) and phase shift, which emits a blue glow... or something like that. I'm not a physics major but it has to do with particles exceeding the speed of light within their medium as they are expelled.
Krauser1226 3 months ago 2
@Krauser1226 Its actually not Cherenkov Radiation, but is commonly mistaken for that because of the similar color. Its actually caused by Ionized-air glow. Cherenkov Radiation can really only occur in more optically dense materials such as water.
pyro637 6 days ago
@MrOregona230 a type of radiation
Wulfie549 1 month ago
Comment removed
anonimoculto 1 month ago
@MrOregona230 The blue flash was due emited neutrons moving faster than speed of light in the air. The radiation at this level has killed almost all the cells of the exposed tissue in the body of scientist. Particularly, it kills the intestine cells. He was essentially dead seconds after exposure. Like a zombie. Without stomach cells working properly the chloridric acid and similars begin to dissolve him from inside to outside. And nutrients are no more absorved too. A very painfull death, sure.
anonimoculto 1 month ago
There were 2 criticality accidents involving this fucking evil core. In both cases people died. However, the accidents actually enhanced the core and made it more potent. When it was later detonated in a test, it had a higher yield that exceeded expectations.
monsterzeroJr 5 months ago
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JUST DO IT
frisko129 5 months ago
Saaatisfaction... came in the chain reaction ! BURN BABY BURN
hipsterical 5 months ago
orau org*/*PTP*/*museumdirectory htm has some really good reports of criticality accidents in their museum library and a lot of other good stuff too, this is where I first learned of other accidents that have not been in the news, some of them rather recent.
monkeyboy4746 5 months ago
@GetOutAliveMovie It's made even worse by the fact that I LIKE John Cusack as an actor. It's like watching a scene with George Clooney dying.
painfulgrapeshot 6 months ago 2
In the Tokaimura Criticality Accident in Japan 1999, they were able to determine how much radiation people got from measuring the amount of radioactive zinc in 5 Yen coins, in the pockets of nuclear workers. The intense radiation made the coins radioactive. Two workers died.
"Tokaimura accident: Neutron dose estimates from 5-yen coins"
Oh, it happened because one worker poured too much enriched uranium solution into a container, while another worker stirred it with a wooden stick!
Diamonddavej 6 months ago
@ryanlak1234
It's damn near impossible to stop the radiation --> less equipment means more mobility to prevent a bigger accident or by running like hell away.
AceofDlamonds 6 months ago
I would rather shoot myself than succumb to the dreadful disease.
AceofDlamonds 6 months ago
Thus is the wrong name the experiment that envolved the screwdrivers was in 46
Red6206 6 months ago
There was no falling coffee cup in reality... The half-sphere of beryllium accidentally slipped off the tip of the screwdriver, and the plutonium mass was supercritical for less than a second. RIP. I have no idea why they had to use their hands to begin with. It sounds stupid to me.
shaygahweh 6 months ago
Comment removed
shaygahweh 6 months ago
The one thing that sucks about knowing physics in this circumstance is that you have the capability to calculate how much time you have before you die. I can only imagine how terrible it must feel.
eeg10 6 months ago
@eeg10 yeah that sucks.
k5lta 6 months ago
@vandius24 @stxrynn there was another person present at the '45 experiment. And this one didn't die until 30 something years later, from cancer, probably related to the accident.
atruckertravels1975 7 months ago
Comment removed
ryanlak1234 8 months ago
@ryanlak1234 i know metallic object can be irradiated i was talking about non-metallic objects as you can see
Vandius24 8 months ago
@Vandius24 That was a typo. I'm sure that ANYTHING can turn radioactive when absorbing a neutron, alpha and/or beta particle. The pieces of chalk that the scientist tossed to his colleagues were probably so irradiated to the point where it could be considered radiioactive waste.
ryanlak1234 7 months ago
What a price to pay. my heart goes out to those two guys that died. A very painful and horrible death. brave men.
TheGodParticle 8 months ago 7
This is so scary! Imagine being perfectly fine and a few seconds later sentenced to slow painful death...
jednoucelovy 8 months ago
@jednoucelovy thats why he's revered all of ova the world till this day<3 he was a hero till the end.
phoney98 8 months ago
that guy received a lethal enough dose of the radiation that he died withing 9 days.
ilovebubblz 8 months ago
The '1945' in this clip title is misleading, it's from a 1989 movie.
According to IMDB...
John Cusack's character, Michael Merriman, is a fictional composite; based primarily on Louis P. Slotin and (to a lesser degree) Harry K. Daghlian.
&
The incident with the plutonium hemispheres is based on two real life accidents that killed physicists Harry K. Daghlian and Louis Slotin in September 1945 and May 1946 respectively. Slotin had participated in the team that assembled the Trinity device.
jsl151850b 8 months ago
Tungsten is a suitable raw material for radiation protection, more than 60% denser than lead, high radiation absorption (superior to lead). It can provide the same degree of protection as lead whilst significantly reducing the overall volume and thickness of shields and containers.
StarcraftAlphaBeta 9 months ago
Anybody know why the scientists never wear any kind of protection while doing these extremely dangerous experiments?
ryanlak1234 10 months ago
@ryanlak1234 Because no material exists that could stop the radiation. They'd have to be wearing a suit made out of 0.5m of lead to stop the gamma and a meter of water to stop the neutrons...
chewstation 10 months ago
This has been flagged as spam show
Tungsten is a suitable raw material for radiation protection, more than 60% denser than lead, high radiation absorption (superior to lead). It can provide the same degree of protection as lead whilst significantly reducing the overall volume and thickness of shields and containers.
StarcraftAlphaBeta 9 months ago
If he had moved the piece with the screwdriver instead of his hand would he have been alright?
Shinydisc117 10 months ago
@Shinydisc117 not really, the screw driver was to keep the half beryllium sphere from touching because thats what starts the fission reaction, the screw driver is not part of experiment protocol and other tools should have been used, when the screw driver slipped and the spheres met it made a critical reaction and a large burst of radiation, he saved the others lives with his quick reaction to remove the sphere, but recieved a fatal dose from standing over it, so it didnt matter what he used.
ap327145 10 months ago
From "Fat man and Little Boy" Why this didn't explode: materials and other variables have to be just right to create a sustained incident. However, it is conceivable under certain circumstances that a criticality in a nuclear plant could become explosive, with meltdown of the core, it could attain the sphericality needed. Not likely, as it requires a forceful meeting of two masses of material. But a new quake could provide the force. Regardless, radiation is real, equals more cancers.
cancers.
hubrusful 10 months ago
the latest demon core incident happened in Yemen in 2009. Two terrorists where upgrading a plutonium core, and this happened, killing them both
JohnFord6466 10 months ago
@JohnFord6466 1000 ways to die
Vandius24 8 months ago
Can anyone answer why the core didn't explode? It went critical, is it because the core was not surrounded by neutron reflectors or something?
Please explain, someone with knowledge....
knackerFacker 10 months ago
@knackerFacker according to what i read, the ammount of radioactive matterial used in experiments are limited to avoid accidental nuclear explotions, if the scientist (slotin) wouldn have removed the beryllium case the critical mass would have gone supercritical, melted and emited tons of nuclear radiation killin most of the ppl in the complex. That man saved their lives...
Abadon852456 8 months ago
@knackerFacker
It requires mass bombardment of the materials, basically explosives forcing or separating atoms. What happened in the movie is exactly what happens in a nuclear power plant.
Weps21 7 months ago
@knackerFacker The radioactive substances used in these experiments lacked the required concentrations to build up the level of energy needed in an atomic explosion. While still very dangerous and able to kill loads of people and get very hot, this surge wouldn't have lasted very long because the particles of radioactive material in the core "mixture" would have expanded from the heat generated and moved further away from each other and so the reaction rate would have died down again.
themule111 6 months ago
It's 3 deaths if you count the one who died 20 years later of radiation induced heart attack from this
DragonGamer9 11 months ago
They measured this experiment in tickling of a dragons tail
DragonGamer9 11 months ago
what movie is this? I wanna see it all
sidpryce 11 months ago
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@sidpryce "Fat Man and Little Boy" it is pretty good if u understand science.
peznat 10 months ago
Scary, an expt where gravity can cause the worst out come,
I would expect gravity to separate them.
STEVEGET 11 months ago
Google "Cecil Kelley criticality accident". That one happened in 1964 and the guy only lived 35 hours. Freaky stuff.
ChannelingusXIV 11 months ago
bet he'll never make that mistake again.....
ChannelingusXIV 11 months ago
lol, Hollywood has to dramatize something so dramatic. unreal The wiki page said the dude was a hot shot thrill seeker and was warned not to keep doing it, he had done it close to a dozen times. Dumb ass.Kind of like John Cusak in real life?
verbusen 11 months ago
@verbusen wikipedia says. You realize what that means, right?
ninananajna 11 months ago
When it becomes supercritical, what happens? It doesn't explode like a bomb would. Does it get hot and melt and release radiation or what?
powerfulpup 11 months ago
@powerfulpup It melts and moves around the place, releasing radiation.
ninananajna 11 months ago
Demon core wins: Supercriticality!!
bbob765 11 months ago
This really happened. That man who disassembled the experiment when he realised what was happening was a hero because he probably saved the lives of the other ones in the room.
plusplusplusplusp 11 months ago
what are they tryin to do?btw, at 1:20 what a douchebag
KaKaGaNu 11 months ago
in real reaction make blue light radiations ? what is ? how , manner ?
PS2djX 11 months ago
@PS2djX
its called "Cherenkov radiation", look at wikipedia for it.
The3Dmasta 11 months ago
@The3Dmasta, no, it's not "Cherenkov radiation", look it up yourself under criticality accidents/blue glow
fobusas 11 months ago
@fobusas
aaahhh, i see, thanx for that, my failure...
what can i say...You live and learn...
The3Dmasta 11 months ago
@PS2djX en.wikipedia. org/wiki/Criticality_accident#Blue_glow
fobusas 11 months ago
@fobusas thanks
PS2djX 11 months ago
there was no osha back then.
jeff29992002 11 months ago
what was he saying at 1:42? metal... drop on floor?
jeff29992002 11 months ago
@jeff29992002 he threw chalk at them and told them to draw an outline of their feet exactly where they're standing on the floor. the reason for this being so he could calculate the distance to the source of the radiation and figure out whether they had received enough radiation to die from. he then said that they all would live, except for him because he had touched it.
SavageSnipes 11 months ago
@jeff29992002 "Take out everything metal, drop it on the floor."
Azarien 11 months ago
Screwdrivers were never meant to do that. RIP, and thanks for developing nuclear weaps.
Laudan08 1 year ago
This core actually killed 2 people and injured several more. There is tons of info about these accidents on Wikipedia, look for Louis Slotin and Harry Dahglian.
clintonearlwalker 1 year ago
Watched this in Physics, it was amazing how basic they were then...
1theblackrose 1 year ago
RIP Louis Slotin
Flyboy243 1 year ago 17
Nope, that's a pretty close approximation of what happened. That core was used at Bikini, and was pretty potent. The accident enhanced the core, and killed the physicist after a couple days. Same thing happened in Russia in the 80's I believe. Same kind of experiment. He lasted about a week.
stxrynn 1 year ago 8
@stxrynn No, it's a pretty terrible approximation of what happened. There were no bricks of lead shielding and the plutonium core was surrounded by two half-spheres of beryllium reflector material. At the time of the accident Slotin had his left hand on the beryllium sphere with his thumb inside the thumb-hole on its top and held a screwdriver in his right hand, maintaining separation of the two half-spheres.
There was no tense atmosphere; it was just a mundane, routine experiment.
soylentgreenb 1 year ago
@soylentgreenb Sorry, I meant the slip of the hemisphere, the blue flash, the prickling of the skin and resulting death of the physicist.. The sphere was also more potent after the accident. That was the close approximation I mentioned. Thank you for informing me of the mundane aspect of the experiment. I wasn't aware of that.
stxrynn 1 year ago
@stxrynn ........you realize the first american killed by radiation was in 1961 right
deacon9260 11 months ago
@deacon9260 nop... The Cecil Kelley criticality accident was a nuclear accident that took place on December 30, 1958
ugoguido 11 months ago
@ugoguido not talking to you dick eater
deacon9260 11 months ago
@deacon9260 ... ups-a-daisy!… the Little Boy is in fact one Fat Lady who takes offense easily. Do not cry... just talk like a man... OK?
ugoguido 11 months ago
@ugoguido Hahaha, shut the fuck up you stupid bitch
deacon9260 11 months ago
@deacon9260 Harry Daghlian was American and died of radiation in 1945. Slotin was Canadian. He was only working in the US.
realinterrobang 11 months ago
@realinterrobang Eat a dick
deacon9260 11 months ago
@stxrynn That was Los Alamos, New Mexico, not related at all to Bikini and the nuclear tests that happened there. Louis Slotin died nine days later and all his workmates survived as he predicted.
mycelows 11 months ago
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@stxrynn did you know that the same core that ended up killing Louis Slotin killed another physicist the year before this (1945) his name was Harry Daghlian (he lived another 25 days after the incident) and Louis Slotin did his experiment in 1946 not 1945 lol
Vandius24 8 months ago
@stxrynn
These 'criticality accidents' (incidents in which a nuclear reaction is started accidentally) are rare because causing a nuclear reaction is a complicated procedure, performed by people who know what they're doing. Most of the few people ever to see a criticality accident died rather quickly.
plusplusplusplusp 7 months ago
aw bullshit that core would've canned his ass as soon as he dropped it like that.
lilangel0072 1 year ago
only do The Demon Core test with a super high tech radiation suit or something.
k5lta 1 year ago
what film is this from?
cirian75 1 year ago
@cirian75 Fat Man and Little Boy (a.k.a. Shadow Makers in the UK) is a 1989 film
FlintF 1 year ago