Housatonic nuclear fireball 9 Mt

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Canal Arequipa - Perú.
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[@manuel_k791]

It's crazy how we went from muskets to summoning a small sun in just a few decades.

[@bluecordprecisiongrading2504]

Only one century from muskets to nuclear power

[@manuel_k791]

@@bluecordprecisiongrading2504 Yes thanks. My bad I meant decades not centuries.

[@MaxC_1]

@@bluecordprecisiongrading2504 not really, early Muskets were created back in 15th century (1465 supposedly) and Nukes came into existence in 1944 so that's almost 500 years. 1 century would imply we created or the best we had was muzzleloaders in 1845, which isn't true but rifled muskets were indeed pretty common back in 1845 but "machine guns" did exist back then

[@bluecordprecisiongrading2504]

@CryoFreezr consider that muskets may have been invented in the 15th century, but nothing better came along until the late 19th century with metallic cartridges being adopted around 1880 for the earliest ones replacing muskets. Sixty five years later and the secrets of atomic power were finally unveiled

[@tomaszkolano8943]

Less than 10 years from 15 kilotons to 15 megatons, then 7 years to achieve 50 megaton explosion.

[@kutsja4671]

finally got rid of that spider

[@goodboy1269]

Lmaooooo ☹️🤣

[@notevenreal971]

I really like how you can see the characteristic double-flash, after the initial nuclear reaction finishes, the fireball dims, and then gets brighter again as the air around it burns

[@erickanter]

I have to be honest. I would have loved to see this test in person.

[@TheDirtbiker715]

Grandfather said: “It’s like standing in front of an oven opening in your face at 450 degrees, that heat was just 15 miles from the explosion.”

[@arthurmchugh5184]

Hell yeah brother 😊😊😊😊

[@Brandough001]

Bring your sunglasses and sunscreen damn it!!

[@gabrielc6252]

You need special eyes to see this stuff 😀

[@Earth_Luna]

so we went from the first tank ever made to vaporizing the atmosphere with an artificial sun within 4 decades or so

[@analienfromouterspace]

Yes, exponential growth. This is just the start, it will be much faster after another 100 year passes, then 50, and 25. The thing is, our world progress is limited by how much energy we can harness per giving day. Fossil fuel is slowing us down, when we should've used nuclear fusion and fission reactors/cores. If we are at civilization of 0.1 now, which achieved in 124 years, the next 0.2 should take half of that. Just pray to God we do not end up destroying our eco system!

[@Earth_Luna]

@@analienfromouterspace in 200 years we are a 1 type civiliization but it took us thousands of years for agriculture

[@NeroontheGoon]

Why yes, and anti-matter bombs are right around the corner if you follow the research coming out of the CERN Haydron collider!

[@stephenhoward6829]

Just because we CAN do a thing doesn't mean that we SHOULD.

[@ChrisZoomER]

I saw the thumbnail and I thought it was the sun, then I read the title and it sent chills down my spine!

[@elex1995]

Technically, It is a small sun since it is the same type of physical reaction.

[@ChrisZoomER]

@@elex1995 Yeah, but still…

[@estonianman632]

it's a little sun 😂

[@brugelxencerf]

This is a unique thermonuclear weapon, being almost fission free, yet producing a 10 MT explosion. Most thermonuclear weapons have a fission primary to compress the secondary fusion component, a fission spark plug to heat the secondary, and a natural uranium tamper which undergoes more fission. Wheres Ivy Mike had a 200 KT primary, this one had only an 8 KT primary. That's how effectively it used the x rays to both compress, and ignite, the fusion secondary. The context (1961) was both seeking less dirty fission fall out, and competing in magnitude wit the Soviet Tsar Bomba.

[@rickfox4068]

All the primary is doing is supplying fast X-Rays to the secondary. I think the early bombs had the big primary, simply because they were dependable and we knew how to make them. It is really hard to get a primary this small that is reliable and produces the output that you would need.

[@michelescaratti362]

How much was the total destruction diameter at that altitude??

[@iecinora2]

Where is possible to read a little bit more regarding this test? At the end is not clear if this model it is reliable for the design calculations

[@kxsmxnxn]

@@iecinora2look up the article “Ripple: An Investigation of the World's Most Advanced High-Yield Thermonuclear Weapon Design”

[@knife-wieldingspidergod5059]

A more eco friendly thermonuclear device.

[@noecarrier5035]

Gorgeous manifestation of the sun!

[@brother_esau2566]

Head cannon- long long ago humans in a distant civilization created a nuclear bomb so large, that when they detonated it space it formed the sun. The blast is still continuing to this day

[@christianblair8663]

@@brother_esau2566 that actually sounds like a cool idea for a sci fi story!

[@duncankimball]

No, a hideous atrocity that has put us all in mortal danger

[@analienfromouterspace]

Not even close to a star, only one process done here, more like mass ejection and that's it.

[@noecarrier5035]

@analienfromouterspace They both use fusion processes, they're both extremely bright, they have similar temperatures, the fireball is even the same shape. Don't be dense.

[@bobertblobert7812]

In the first few millionths of a second, the core of that fireball was more than 200 million degrees Fahrenheit.

[@azonicrider32]

That initial fire ball is 5x hotter than the core of the sun, and 10,000x hotter than the surface of the sun.

[@Paralyzer]

That isn’t actually true . Core of the sun is 27 million degrees F (15 million degrees C) a nuclear fusion reaction doesn’t get hotter than that . So you’re dead wrong Surface of the sun is cooler but not the core . Learn physics

[@AbsurdistRetard]

​@@Paralyzeryou're the one who's dead wrong here, don't act like you know it all or something, the temperature of the core of the sun is 27 million degree Celsius, but a hydrogen bombs core produces 100 million degree Celsius of heat, you're the one who has to learn some physics first, what a moron.

[@rocketryvideos1309]

@@Paralyzer Cocky and wrong on the internet, sadly too common. The temperature at the center of a large nuclear bomb like this one is easily 100 million degrees. If you were so wrong about this, what else are you wrong about? Dunning-Kruger effect IRL.

[@cha7664]

@@Paralyzer You are wrong lmao

[@Paralyzer]

@@rocketryvideos1309 no he was wrong , he said the nuclear fireball gets 5 times hotter than the core of the sun . Thats 100 million degrees Celsius . That’s just impossible for fussion to Happen only needs 15 million degrees . Go set of a hydrogen device , stand next to it real close , holding a thermometer, let me know what the result is. Good luck Let’s agree to disagree , I need solid Evidence before I buy your bs

[@christopherleubner6633]

The most interesting part is that the air itself gets so hot that it is opaque to the light causing the caractoristic double pulse. A fast bright pulse then a dimming and then when it cools enough the light escapes in a longer lasting brigter pulse.😮

[@HazelVsTheWrld]

I wonder what would happen if you showed medieval people this.

[@StefanoPonzi22373]

Questo é un bell'argomento...e se ricordi la storia di Ivanoe tratta dello stesso argomento; ma di una cosa possiamo essere certi, se gli antenati medievali vedessero questo potere e intuissero che può essere controllato, non si smentirebbero di usarlo

[@peter5.056]

they'd fall to their knees and fear us as gods.

[@Astrofrank]

Impressive images, well-chosen music - thank you.

[@BasePuma4007]

This video really highlights how much these things are like mini stars. Stars are different when you get into technicalities, but at a basic level nuclear weapons are like short lived stars that aren't contained by gravity, so you get a rapid outward acceleration of the atmosphere surrounding the detonation site, which is what we perceive as an "explosion." Stars are constantly fusing hydrogen into helium because of their gravity, which produces a lot of energy in the form of electromagnetic radiation of every part of the spectrum from radiowaves to gamma rays, and nuclear weapons do the exact same thing only they produce the heat and energy required for fusion by splitting unstable atomic nuclei, which is fission, and in some bombs the fusion reaction that takes place as a result of the initial fission primer then causes even more fission to occur, but I digress. That is the energy source that makes main sequence stars - like our sun - possible. It is the same force of nature that makes thermonuclear weapons possible. It's just mass converted to energy.

[@blueboats7530]

The last air dropped test, apparently it was an innovative advanced design, sure looks the part

[@railgap]

various sources claim the Ripple II secondary was the most efficient ever, but wasn't used after this test, for various reason buried in documents I don't have the money to pay for. :\

[@5000mahmud]

@@railgap IIRC it was the device was efficient but was quite wide, couldn't fit multiple on ICBMs

[@kxsmxnxn]

@@railgapiirc it wasn’t pursued further because it was expensive and complicated and difficult to figure out how to put it on an ICBM, and they were happy to stick with the tried and true technology that they already knew

[@iloveesr]

great footage. really slowed down... you can see the fission detonation and then the fusion reaction just take over

[@piezocat]

The specific feature unique to nuclear explosions in atmosphere is the double flash - essentially the explosion generates a bright flash which is briefly dimmed by the shockwave passing through it, before brightening up again... this does not happen with conventional explosives, so much so that detecting the double flash is how a Bhangmeter detects a nuclear explosion in atmosphere.

[@normkirk65]

Inconceivable that the center of this fireball is around 150 million degrees Fahrenheit for about a tenth of a second.

[@roquefortfiles]

Full Coppertone sunscreen would do shit

[@kutsja4671]

Yeah probably painless

[@xrfa7422]

It's only that hot for about one microsecond.

[@roquefortfiles]

@@xrfa7422 Nope. Depends on the yield

[@xrfa7422]

@@roquefortfiles The integration of Planck's law over all frequencies provides the total energy per unit of time per unit of surface area radiated by a black body maintained at a temperature T, and is known as the Stefan-Boltzmann law: P/A=\sigma T^{4}\ , where σ is the Stefan-Boltzmann constant, σ ≈ 5.67×10−8 W⋅m−2⋅K−4[51] To remain in thermal equilibrium at constant temperature T, the black body must absorb or internally generate this amount of power P over the given area A. [My comment: It's probably classified information how long a hydrogen bomb maintains fission/fusion during the explosion, but it is on the order of one microsecond. The fireball would be smaller if the yield was lower. I mean the hot fireball where the reaction is, not the plasma fireball we can see that results and is persistent. That is yield dependent as you say. They have a fireball calculator on the MIT website. Something one hundred million degrees Celsius would not stay that hot for long because it radiates energy proportional to the fourth power of temperature. ]

[@Karl-P]

Majestic. To think that its man made its even more incredible.

[@chbloss]

Man has made perfect destruction.

[@Videodirektor1]

White man!

[@Brandenburg-Poznan]

@@Videodirektor1 china, north korea, india, pakistan. all nations with nuclear weapons. none white.

[@The_BIG_salad]

So are my morning shits.

[@vilandlioneil5785]

@@Videodirektor1 what the difference

[@borntoclimb7116]

0:14 just epic

[@Netravick]

Very. Haunting and beautiful at the same time.

[@borntoclimb7116]

​@@Netravick true

[@kxsmxnxn]

not me shazaming the hauntingly beautiful soundtrack to this video only to find out its halloween music 🎃

[@mikehanna1981]

"Honey, why is the Sun rising in the north?"

[@legoworks-cg5hk]

Sees thumbnail: that's just the sun Watches the video: oh

[@BPJJohn]

Moonbase Alpha music: UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU.

[@sam-z8284]

Tanning salons ain't got nothing on this

[@leonwilliams9589]

I would pay money to see a live test from a safe distance! Maybe even flying from a safe distance.

[@roseanneroseannadanna9651]

The odds seem to be good you might see one for free!

[@xXturbo86Xx]

Now imagine this explosion being self contained by it's own gravity and you get an idea of what the Sun is.

[@somnuswaltz5586]

Thanks Einstein, but it's pretty common knowledge how the Sun works. Stop trying to act all intelligent

[@jamesb95]

@@somnuswaltz5586 no need to be a prick Mr Smartypants

[@v44n7]

@@somnuswaltz5586 lol whats you problem

[@tommeakin1732]

_And so it is said that, at the height of their wonder, the old ones brought the stars to earth; their burning wonder to be brought down on their foes. For all their strength and might, they could not overcome the timeless ways of man; the ways that raged in their forefathers and still burns within us. It is said that within only an evening, as the sun set, they learnt that the heavens were not meant for man or the earth. Through the unending, blinding starfire and the ghostly illness that reaped the world that followed, the golden age of man came to it's end._

[@Robsay01]

We always see the mushroom cloud but it’s really the after effect. This is the real thing. Wow.

[@maksphoto78]

Double flash in super slow motion.

[@barneylinet6602]

in case you couldn't figure out you had been nuked, the double light pulse was a dead give-away.

[@CroatianBlackops2cel]

Because of fusion mixed with fission?

[@goodboy1269]

​@CroatianBlackops2cel extremely high energy

[@maksphoto78]

@@CroatianBlackops2cel No, it's due to the chockwave hiding the plasma glow.

[@haven_lady675]

This is just mesmerizing and terrifying to watch....

[@RichardNixonsHippieRemoval]

The last above ground test by the US. 10/30/62

[@unclefunkle2834]

im sitting watching this while eating mac and cheese

[@OldGrayCzechWolf]

Survival food. Kraft mac & cheese and twinkies are the foods that will survive the apocalypse.

[@PointlessCreativity]

When you invest all mana points in fireball spell...

[@degenetron7590]

a second sun

[@manilajohn0182]

"The discovery of the splitting of the atom has changed everything except our way of thinking. Thus, we drift toward catastrophe beyond comprehension. We shall require an entirely new manner of thinking if mankind is to survive."- Albert Einstein in a 1946 letter to a friend.

[@DaBlazesUSay]

Free tans for everyone!

[@tigerpjm]

It would be good to have the full speed footage played first, and then the slow-mo appended to the end. But I appreciate that the channel can only play the fottage it finds, so it isn't a criticism of whoever runs it...

[@bigmoose7]

It’s not slowed

[@tigerpjm]

@@bigmoose7 So you're saying the U.S. Air Force was wrong on their shot report?

[@bigmoose7]

No@@tigerpjm

[@arnabnath8428]

such a power in human hand. unbelievable.

[@mauriziocosta3858]

so powerful is man that tomorrow he cannot be sure that he is alive. ( greetings from Italy )

[@Mandrak789]

wait until we get a hold of antimatter bomb

[@arnabnath8428]

@@Mandrak789 yeah i am afraid of that.

[@arnabnath8428]

@@mauriziocosta3858 okay that's true for now.greetings from Bangladesh.

[@mauriziocosta3858]

@@arnabnath8428 of course, among the weapons available to man, the h-bomb is certainly the scariest and most powerful for spreading death. But there is a weapon that kills more than the h-bomb. And this weapon is called hatred which can be found in the heart of man. This is the most dangerous weapon that kills the soul of its user. Material weapons (bombs, rifles, etc.) can cause physical death. But hatred can cause eternal death for the user. And what can be the comparison between a finite space of time with an eternal time?

[@user-mr6qv5ub3g]

Какая прелесть!

[@fredharvey2720]

Speechless

[@agravemisunderstanding9668]

Here comes the sun do do do do

[@si-vis-pacem-parabellum]

was this another yield miscalculation or not.

[@AviSpace]

0:04 Here comes the sun

[@Hoopaball]

If you see one of these just hide under a desk.

[@Paralyzer]

Hide under a desk when a 9 megaton nuclear weapon is detonated outside wouldn’t probably help a whole lot

[@dasdasdsa9117]

You are right, better go under bedx

[@borntoclimb7116]

0:08 and 0:18 are epic too.

[@GenericSpace]

Yo, I told you to light the BBQ, not reshape the !@#$ing back yard!!!

[@kurtdewittphoto]

Just curious what the long-term effects would be if it didn't dissipate.. We just had a constant mini sun 12,130 feet up..

[@analienfromouterspace]

Well, earth will be come so hot that all water starts to boil, then our atmosphere becomes compromised from the constant attack of the gamma rays, plus radioactive burns for any living things within radius, and ultimately death!

[@eeriejig1522]

Go back to sleep

[@SomeRandom6uy]

yes I have to admit it more dramatic to watch in slow motion so people have the time to write epic comments. Try watch it in realtime.

[@winstonsmith478]

Cooking with fission-fusion-fission.

[@supergeeks6141]

Is that the moon base alpha ambient music

[@narogugul3297]

looks super cool but i was waiting to see the clouds moving.. i was quite disappointed.

[@mikeoxmall69420]

Conjuration: Summon Small Star

[@Dustin_47]

Boom!

[@PatrickFitzgerald..]

It’s like sun exploding on you

[@charleichen3763]

Why did the fire ball stay bright for so long？

[@minera7595]

This is most likely a slowed footage

[@duncankimball]

Utter insanity

[@Uajd-hb1qs]

“Why don’t aliens make contact with us?” Average human disagreement:

[@user-cd1mx5dw9k]

Imagine sun being brighter and brighter

[@easygoing2479]

This is really pretty. I wish they would start doing these again, like on Fourth of July or Groundhog Day.

[@brugelxencerf]

Funniest thing I've read in quite a while!

[@barneylinet6602]

Not a good idea; nuclear bombs produce extremely dangerous radioactive isotopes such as cesium 137 which acts like calcium and if you ingest it, it goes to your bones and then kills the marrow where your blood cells are produced. This stuff started showing up in cow's milk back in the early sixties....Which led to the nuclear test ban treaties. Remember the old peace sign? That was the symbol of the anti-nuclear organization SANE.

[@bhargavipba]

💀💀💀

[@xrfa7422]

Yeah, but the audience would not cooperate.

[@krimokrimov6050]

I have an important question I noticed in many thermonuclear explosions that there are bright spots in the explosion. I do not know whether they are parts of the bomb that are thrown out in the explosion or what and why they appear specifically in thermonuclear explosions

[@sgrouge]

Probably some parts of the explosion volume that are hotter or colder than average explosion. Not sure, but there also might be some high speed currents with the center, like a mini-sun.

[@kutsja4671]

Even without slow mo, you would see double flash and particles around the fireball of H-Bomb

[@BansheeRiderNL]

The first flash is very bright but then it's becoming darker with those dots in it. Wonder what that is...After that it becomes very bright again. Very interesting. In realtime speed it's not noticeable for our eyes offcourse.

[@DanteTimberwolf]

It appears to darken because it heats up so much that most of the light released is not in the visible spectrum. It is so hot that it has to cool down in order to become visible again.

[@jorgeavalos816]

@@DanteTimberwolf I don't think soo, if I remember well the light emitted in each wavelength only increases with temperature. So an increase in temperature shouldn't reduce visible light. I think this fenomena it is called "double flash" and it is a characteristic effect of nuclear explosions.

[@philipchesleyiii]

Not sure how slowed down this really is actually. If you watch the full video from Lawrence Livermore national laboratory its 7 minutes and 18 seconds long. The clouds actually move in front of the fireball in that video. So it can't be slowed down that much. Unless the clouds were just hauling ass.

[@mryhdy6266]

The reason I read somewhere is that when the process starts it generates radiation of all wavelenght that can be seen. Then the surrounding air heats up and becomes opaque, in other words blocks the transmission of light. It takes extremely high temps for that, millions of degrees, that does not last long. As everything expands and cools down, light can pass again, hence the double flash.

[@mryhdy6266]

@@Zappina That is not correct. The double flash is visible with single stage weapons just the same, it is because there is a range where the air blocks the passage of visible light. And the color you see is because of filters, it has nothing to do with the temperatures that are being created.

[@ChimpFromSpace]

If you watch in .25X speed, you can see all kinds of spots(artifacts) appearing all over the screen...they become less and less frequent until about 16 seconds in, they stop. Could this be radiation bombardment? Or is it simply an effect of the bright light on the lens?

[@Ethan-gb3zh]

It's definitely some kind of radiation bombardment. You see a similar thing around any highly radioactive material even with most modern cameras. High energy photons saturate the camera's imaging chips. I'd guess those are highly energetic photons from the initial fission bomb that didn't get captured in the fusion reaction or were released in the fusion process. This was probably shot on film so I'm not entirely sure if it would have damaged the camera setup itself, but in modern cameras you can get quite a few dead pixels from irradiation. The disappearance probably marks the end/saturation of either the fission or fusion process, or both. But I rely on Cunningham's law to bring someone who knows more to correct me.

[@TishaHayes]

@@Ethan-gb3zh This was filmed way before the day of a digital imaging chip and was done on high speed film. Those spikes and bright spots are the physical components of the bomb casing that have been turned in to a plasma and are outrunning the fireball. Essentially the bomb took an X-ray of itself and accelerated its own remains at hypersonic velocities. If you look up "rope tricks" as it relates to nuclear weapons detonations you can see the protuberances of ground detonations where the tower guy wires turn in to a plasma and extend downward as spikes from the fireball in those first tens of milliseconds.

[@RonaldoSSilva-tn8kp]

Sera que DOI?

[@tammyharrington138]

🎉

[@JonMartinYXD]

What FPS was this filmed at?

[@SirPeekALot_]

about 2400 if i remember right

[@Sokol10]

Search Rapatronic cameras

[@AllanElMelon1043]

Red sun over paradise...

[@martinross6416]

Why is the second intensity peak blue? Is that super-hot blackbody?

[@ugowar]

This is originally black and white footage from LLNL, it was just colorized here. It's just the result of brightness to color palette mapping.

[@SheetingHydroFrame]

It kinda looks like the sun has changed to a new star, or sun will just explode

[@grahamfisher307]

I like the way at 10 seconds it looks like a bap you might get at a burger bar, LOL!

[@irshadtelecom2356]

Показывает. Солнце.

[@jonathon6756]

poland simulator 2022

[@majkizbajki8032]

usa and russia symulator 2022 🥳

[@depebehwuha3510]

@@majkizbajki8032 симулятор всего мира 2022 - ибо всему миру достанется

[@bobjones263]

How big is the fireball?

[@CreativeWarrior-]

Diameter probably 4.66 km.

[@JonMartinYXD]

Radius 3.15 km. Video title is misleading/wrong, the yield was actually 9.96 Mt

[@CroatianBlackops2cel]

Imagine detonating it on surface, entire town would be evaporated and turned into crater

[@SuperRip7]

This weapon exploded two days after the end of the Cuban Missile Crisis.

[@gringostarr69]

Yeah, what a crisis that was. Cccp just wanted a military place close to you like you had tons around it. But according to USA the world was going to end 😂😂😂

[@roquefortfiles]

That's just fucking crazy. It is like the energy is still reacting long after detonating even to the point of pulsing beyond 100%. It is like the reaction is running at 180% far beyond the point of exploding.

[@narikira4793]

the thing is thats basically whats happening in a sense, the fission reaction is tons of atoms colliding with one another and splitting into more and more and more, its an initial explosion followed by a chain reaction

[@roquefortfiles]

@@narikira4793 It takes a Hiroshima bomb to simply start the reaction in this thing

[@roquefortfiles]

@@narikira4793 It's not tons of atoms colliding with each other. It is a few pounds of Lithium which is then ignited from the pressure and heat of a regular atom bomb. This then starts a fusion reaction. Exactly the same process that runs the Sun. The entire process happens in about 1 billionth of a second.

[@xaiano794]

It's because people think of a nuke like a regular bomb, where the explosive is thrown out to form the fireball. With a nuke it's just the material in the very centre that gets incredibly hot, so hot it gives off x rays which shine out from the core. Those x rays turn the air into plasma and that makes the fireball.

[@bitrexgm]

The reaction is finished long before 1 second in, the transient dimming is due to the outer shock wave being temporarily opaque to visible light from inside it prior to hydrodynamic separation.

[@user-ux3ix7fb5g]

SolarSystem

[@irshadtelecom2356]

Мало. Осталось.

[@CatkinsonGD]

Was hoping it would show the foreground clouds getting blown away tbh

[@janetsminten8196]

The detonation takes places an extremely far distance away, dozens of miles; the foreground clouds are nowhere near it.

[@thomasvanwely]

I still wonder why it becomes darker after the bang and then brighten up after, is it because the innitial explosion is higher in X-rays than visible light?

[@anderspalm4859]

It's the shutter of the camera compensating for the intense light.

[@GenericSpace]

I was thinking it could be because they use a Fission device to trigger the Fusion device but honestly, I don't know whether this is a Fusion or Fission explosion and I'm really too lazy to search it and read about it xD

[@nooneinparticular1491]

@thomasvanwely - What you are seeing is called the "...Nuclear Double Flash..." and it is a unique phenomenon that happens when a nuclear weapon is detonated inside the atmosphere. I'm going to post links to some other youtube videos showing Operation Hardtack-I, Test Poplar, another H-Bomb test (detonated at sea level) of very similar power (though of a very different bomb design). The first video was taken from an observation aircraft, unfiltered, and at normal speed: kzbin.info/www/bejne/qXizd5tpe6yUmrs And now, for some high-speed footage of the same test: kzbin.info/www/bejne/hWqogYVjabSYgc0 kzbin.info/www/bejne/iHqUknRnbL2hd8U kzbin.info/www/bejne/Y3utl3ygobpqkJo As you can see, the Double Flash, in real-life, actually happens pretty quickly, but at least for larger nukes, our brains can process it. For the record, here is a youtube video of this same test which I think is at normal speed; unfortunately, it's black-and-white and appears to be filmed through a heavy filter, so there's not much to see, but it sort of gives a more realistic timescale of how fast the Double Flash happened for this test: kzbin.info/www/bejne/oIfcdnp5rbCtoMU Before I jump into my version of an explanation for the Double Flash, here's a link to a youtube video detailing the history of the instrumentation that was developed to detect nuclear detonations via the Double Flash phenomenon; skip to the four-minute mark to get into the specifics: kzbin.info/www/bejne/kHTEmqh9qLmloLc If you still want to read my rank-amateur version of an explanation, I'll post a reply to this post with one. Fair warning, it will be a long post, so get comfortable :)

[@nooneinparticular1491]

@thomasvanwely - Your initial question, "Is it because the initial explosion is higher in X-rays than visible light?" is a big part of the reason for the Double Flash. As you correctly stated, the bomb's core is so hot that it is emitting huge amounts of X-Rays, plus some Gamma Rays, and a significant amount of Hard UV Light. Unlike visible light, which can travel quite far through the atmosphere before being absorbed and scattered, those very high-frequency, short-wavelength bands cannot go very far at all. They will react with cold air within a few meters, get absorbed, and quickly heat up the air. Stepping back a little, the time right after the initial detonation looks to be an expanding explosion, right? As I understand it, that's actually deceptive, because there really isn't much physical movement involved. IIUC, what we are seeing is the air around the exploding bomb being heated up very quickly (starting with the air molecules closest to the bomb and working outwards) but not really having time to move anywhere. This is what everyone calls the Nuclear Fireball; it's the volume of air around the exploding bomb that's been heated up enough to give off light. At the risk of beating this point to death :) let me add that the Fireball is very hot, but not "...as hot as the core of the bomb..." hot, which means that it's the correct temperature to emit VISIBLE light. LOTS of visible light! Of course, this IS a bomb, which means that there will be a physical shock wave coming very soon. The bomb itself heats up massively, its mass expands, and !!!boom!!! we get a shockwave. At this point, a weird thing happens. As the shock wave passes through the atmosphere, it compresses the air molecules so hard that it turns them to plasma, which is to say that it knocks the electrons right off the nuclei! Plasma has some odd properties. It's electrically conductive, which doesn't really matter in this case, but is sort of interesting. More to the point, plasma is mostly opaque to light. That's really weird and took me a long time to grasp. Whatever part of the Nuclear Fireball that's inside the shockwave is effectively hidden from the rest of the world, because the shockwave - made of plasma - won't let the light pass through. As the shockwave expands, eventually the entire Fireball is behind it, and is entirely hidden, and THAT'S why it appears to dim. This can't last forever, of course. As the shockwave continues to expand it gets weaker. "Weaker," in this case is a relative term. It's still strong enough to level buildings, overturn vehicles, and hit a human so hard to instantly kill, but it's no longer strong enough to create plasma. The electrons in the plasma recombine with the atomic nuclei, become normal matter - which is to say that the shockwave is no longer opaque to light - and the Nuclear Fireball is once again visible to the world. At least, that's what I THINK happens for a Nuclear Double Flash. I've read many explanations, and they all seem to be similar, but slightly different.

[@user-pz1kg8ny7g]

Hare Krišna 💥💥💥💯

[@W1se0ldg33zer]

The fireball lasted about 9 minutes. Very frightening.

[@ozarkmedia]

No, it didn't. The videos of Housatonic on KZbin are at 2400 frames per second, but played at 30 frames per second. This makes it seem like the fireball was around for a very long time, when it was actually a fraction of what you see.

[@Meninx87]

Hopefully no saiyans saw this...

[@newcinema4931]

why did we do this bro💀

[@madeconomist458]

According to the wiki page at least, this was a 99.1% clean nuclear test

[@tobiaszpasterski481]

It was exprimental 8.3 MT warhead. If it is true cleanliness is higher than even Tsar bomb

[@madeconomist458]

@@tobiaszpasterski481 I don't think that's quite right: Tsar Bomba was over 95% clean but had a maximum yield of 50mt, so this would have 20-25mt if it used a "dirty" design.

[@tobiaszpasterski481]

@@madeconomist458 Thank's. I understand.

[@randehmarshgames4608]

Clean? Does that mean it didnt produce a lot of fallout or?

[@kxsmxnxn]

@@randehmarshgames4608yes, it makes less fallout, because it gets almost all its energy from fusion and not fission

[@Super_D36]

This is how i imagine it would look if the sun came crashing down on the earth.

[@rafaelchampion]

You mean if the Earth would come crashing down the sun

[@Super_D36]

@@rafaelchampion Intelligent answer! You're not wrong.

[@OldGrayCzechWolf]

From Close Encounters Of The Third Kind: "He says that the sun came out last night. He says it sang to him."

[@JanoschNr1]

Now I'm asking myself ... how big would we have to build one for it so self consume earth and power itself for a proper sun. Maybe there was a race out there once wich did exactly that, not by war, rather than just pure bad luck of creating a super bomb wich detonated on their own planet turning it into a sun erasing all traces of prior life.

[@MrElapid]

Earth's not massive (big) enough to sustain a fusion reaction at its core. Not enough gravitation to keep the squeeze on. If there was, Jupiter would be a small sun as it's mostly Hydrogen.

[@lajoswinkler]

You colorized it perfectly wrong. These things are not orange. They are bluish-white. They are THAT hot. Orange comes way later when the gases cool down considerably. There was no need to colorize it and if you wanted to do it, you could've done it correctly.

[@InexcyeSolms-handle-is-taken]

Then you do it. Or pipe down and watch the show like the observer you are.

[@Lone.Willow]

Is anyone able to deduce how big the fireball was in this video? What was its diameter?

[@leandrozirevicius5915]

At least 4,5 km

[@w1tcb1gnet]

Bomb H

[@drk321]

You ask us to donate $$ but offer zero description for what is happening? Maybe you owe US money?

[@irshadtelecom2356]

Вот. (. Короновирус. Мало. Осталось. 🇦🇿

[@cow_tools_]

Wow. I wonder how wide it was?

[@hawkboy451]

Effect distances for a 9 megaton airburst*: ▼ Fireball radius: 2.33 km (17 km²) Maximum size of the nuclear fireball; relevance to damage on the ground depends on the height of detonation. If it touches the ground, the amount of radioactive fallout is significantly increased. Anything inside the fireball is effectively vaporized. Minimum burst height for negligible fallout: 2.09 km. Moderate blast damage radius (5 psi): 14.6 km (672 km²) At 5 psi overpressure, most residential buildings collapse, injuries are universal, fatalities are widespread. The chances of a fire starting in commercial and residential damage are high, and buildings so damaged are at high risk of spreading fire. Often used as a benchmark for moderate damage in cities. Optimal height of burst to maximize this effect is 6.5 km. Thermal radiation radius (3rd degree burns): 31.4 km (3,110 km²) Third degree burns extend throughout the layers of skin, and are often painless because they destroy the pain nerves. They can cause severe scarring or disablement, and can require amputation. 100% probability for 3rd degree burns at this yield is 12.7 cal/cm2. Light blast damage radius (1 psi): 41.1 km (5,310 km²) At a around 1 psi overpressure, glass windows can be expected to break. This can cause many injuries in a surrounding population who comes to a window after seeing the flash of a nuclear explosion (which travels faster than the pressure wave). Often used as a benchmark for light damage in cities. Optimal height of burst to maximize this effect is 9.72 km.

[@JonMartinYXD]

Also the fireball radius was 3.15 km. The video title is wrong, the yield of Dominic Housatonic was 9.96 Mt.

[@tamtamich4]

Housatonic was 9,96 megatons, altitude of blast was 3700 meters, fireball radius 2.19 kilometers, 3 degree burns will be in 33.3 kilometers

[@JonMartinYXD]

@@tamtamich4 Oops, I had it set to surface burst. But when I set it to 3700 m airburst it gives me a fireball radius of 2.42 km, 3rd degree burn radius of 33.3 km.

[@absolutelycitron1580]

​@@hawkboy451 to

[@madcatmk213]

water marks are cool cuz you never know who will steal footage of you invention in action... you invented this right?

[@philipchesleyiii]

Why is the video so short? The actual filming of this detonation is 7 minutes and 17 seconds long. Film 120256 But still cool video

[@carlousmagus5387]

What the hell is wrong with us?!

[@OldGrayCzechWolf]

Noyhing.. What is wrong with you?

[@philippmuller-litz401]

play Rammstein over it

[@gringostarr69]

That looks super cerreal!

[@r.t.rakubio5088]

Good news is we have lots of knowledge wit this type of weapon. Now just look at who 9s in charge and realize the knowledge will be used on us.

[@mike4402]

People don't know but during the cold war both the US and USSR were shooting nukes into the stratosphere as threats to each other, russia at one point detonating one above khazakstan, causing an emp blast that caused a fire at the powerplant, wiping out their power grid for months.

[@Based_transition_Clocker]

Double film exposure and film of the sun... No H.G.Wells sci-fi necessary.

[@sebastianfischer2082]

Do you have any idea idea how film and cameras work? Either you're far too Indoctrinated or genuinely just intentionally dense, either way it's pathetic.

[@ChadwickTheChad]

Lol, you're not even embarrassed 😂

[@Based_transition_Clocker]

@@ChadwickTheChad I'm vicariously embarrassed, on your behalf.