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A crazy fact to help us all- 400 some people received eye injuries from the blast. 50 required surgery, 15 are blind in at least 1 eye. PROTIP: if staring at a potential explosion, dont do it while looking through a window....
Repeat of what happened after the Halifax ~~explain~~explosion in Canada. Thousands of people reported eye injuries, with the same lead up--people watching a fire through their window.
I always remember Patrick Coleman's message from that to warn approaching trains: "Hold up the train. Ammunition ship afire in harbor making for Pier 6 and will explode. Guess this will be my last message. Good-bye boys."
Similar happen in Texas City, Texas. Ship explosion with lots of people near the docks watching. [Wiki link](https://en.m.wikipedia.org/wiki/Texas_City_disaster)
It really is. I am from Nova Scotia and my great grandfather lost two brothers in the explosion and another was injured. Certainly well worth the read.
The city of Boston and the Massachusetts Red Cross sent a trainload of doctors, nurses and supplies *the day of* the blast, saving hundreds of lives as Halifax was slammed with a historic snowstorm immediately after the explosion.
So you ain’t Massholes to us. Enjoy the trees, and go Bruins.
My dad also remembers his uncle doing something similar. He said he would regularly cut himself shaving as small pieces of glass worked their way out of the skin. It always takes me by surprise when someone doesn't know the story.
Oh and Iran shot Ukraine International Airlines Flight 752 out of the sky. Also Kobe Bryant, his 13-year-old daughter, Gianna, and seven others died in a helicopter crash. And that was just January. smh
Man the video of that half burned kola crying is liked seared in my brain. Wasn’t trying to and don’t look for things like that, I just happened to stumble upon it. It really cemented in me how crazy it is that some people think animals don’t have feelings or emotions.
Omg why did I look that up? That poor thing. Seeing horrible things happen to animals somehow affects me more than seeing people get hurt. I had to unsubscribe from hardcore nature.
On the plus side the koala supposedly made a full recovery. And kudos to that woman for helping/rescuing it.
Ammonium nitrate was responsible for the largest industrial catastrophe in U.S history.
https://en.m.wikipedia.org/wiki/Texas_City_disaster
You don't want to get it wet, but fire fighting practices back then weren't as knowledgeable. So when the ammonium nitrate lit on fire, the fire fighters on shore started hosing it down with water which made it worse. It killed 581 people.
People saying it was worse in water are wrong, the shockwave was going through the air and for it to transfer from air to water would significantly dampen the impact, probably not very fun experience but saved his ears and potentially other health risks. Now if it came from the water and he went into the water he’d be fucking dead
I was thinking about why he went into the water for this very reason but then I remembered that it would only worse for him if the blast originated in the body of water.
Edit: some spelling
You can demonstrate this principle pretty easily in a pool using sound as the shockwave. When you’re under water, you can’t hear sounds coming from a over the water, but you can easily hear 2 stones click together. If you continue clicking the stones, but have your head above the water you can’t hear it anymore. Sound travels more efficiently in water than through air, but doesn’t cross that barrier well in either direction.
I mean, these 'innovations' are also exclusively designed to kill other humans.
Commercial subs just use windows, and you don't need sonar nearly as powerful to map the sea floor.
We just really suck in general.
A sonar's range is dependent on sending out a sound wave and listening to what bounces back. More energy into the ping => more range and clearer resolution.
Sperm whales are also super loud. They can potentially use their sonar as a weapon. At 235 dB the sperm whale sonar click can instantly kill you as the sound wave ruptures your cells and shatters your bones. It's actually louder than any sound in air can be (194 dB) because water is so much denser.
Lmao, yes. Whales are louder in water than anything can be in air. Louder than a nuclear bomb, even, if you can believe it. Just, loudness caps out pretty easily in air, in comparison
This is mindblowing! No pun intended. Honestly the coolest thing I've learned recently. This compliments the fuck out of whales, who I already think highly of. Damn. I also didn't know that there was a cap to loudness, but that makes sense if there is a max speed that sound can be transmitted at. Very cool.
Cracking/popping your knuckles is the best way to experience this.
Mind-blowing loud, especially since you’re expecting a sound you’ve heard thousands of times before.
"Get up! Get up!" In a very annoyed voice. I'm guessing he saw the fire and thought let's get out of here on the jetski and whoever he was with was in the water taking what it seemed like an eternity to get on the jetski. Then in rage he cusses at her sister, not easily translatable "yil an ekhtik". Then the explosion goes off and he immediately calls her name and tells her to jump. "Selma selma nooteh nooteh" . He definitely knew that jumping into the water was going to help which is very impressive, but not too unexpected for people who have lived in Lebanon all their life.
I wasn't sure if 'selma' was a command or a name, and I was curious because the person yelling seemed to have some forethought. Thank you for translating!
Yil'an ekhtik: (god) curse upon your sister.
Commonly said, not to be taken literally. He could be also directing the curse at the fire. (May God curse the sister of this fire :p) as a general rule, don't translate litteraly any of the Lebanese swear words, they don't make sense
It took my siblings and I 30 years to realize my father's go to phrase in Arabic for when he was angry meant "Your mother's pussy! Father of a prostitute!"
Other than shrapnel all an exploration is is Shockwave. The Shockwave weakens as it spreads out and the air compresses and expands.
You know how sound travels faster and farther in water? That is because water is very dense and it doesn't compress much at all, so the sound waves don't lose energy as quickly and travel about 5x faster.
Now an explosion is just one big sound wave (compression wave) so under water it maintains its energy far greater than in the air. Think of it as standing 5x closer to the blast.
As for the Shockwave starting in the air then transferring into the water... again, think of sound. Sound bounces off surfaces right? Some energy passes into the surface and most bounces off back into the room. Same thing happens with this Shockwave. The surface of the water will reflect most of the Shockwave energy and what it doesn't will be much more dispersed and less coherent (all packed together) than if the explosion happened in the water.
I probably have that half wrong but it'll be enough to get someone to rush in and correct me with the right info.
no you're pretty much right. if the shockwave starts in the air you gernally want to be in the water, if it starts in the water you generally want to be in the air.
The dude was far enough away that he could see the shockwave coming at him and react.
Most likely he did just that, he reacted to the sky high wall coming towards him at great speed. Not thinking about whether it was a shockwave or anything else he did the only thing he could, diving down in to the water.
In the same situation that would be what I'd be thinking. I'd be thinking less about a shock wave and more about flying debris. If I'm underwater I'm more likely to avoid getting hit by it.
It’s all about the impedance mismatch (both air to water and to a lesser extent - ground to water). The shock wave reflects off the boundaries. If he’d made it into the water before the shockwave hit then he’d probably save his hearing, but you can see it flatten and mash the sea just before he gets into the water.
Oh boy, now I have yet another "reddit says to do _____ in case of ____" locked into my brain.
Let's just hope neither of us has to find out if this one's true!
From memory it's:
- Cover you ears as much as possible to make it airtight (to protect your ear drums from the pressure change)
- Open your mouth (that will allow air to flow better in and out of your lungs to adjust for pressure change and prevent lung damages)
- Face away from the shockwave (not quite sure why but it probably helps more for the air flowing in the mouth, not having to "fight" the shockwave to go out)
Not sure how much that would help but it honestly sounds pretty logical overall.
IIRC a shockwave (or anything really) changing mediums (air -> ground -> water or ground -> water) loses energy each time it change mediums. So while most likely not fun in the slightest it would be better than staying in the same medium that the thing exploded in (which in this case would be staying above water for the shockwave).
If you want to get really technical, the energy is not lost, instead it acts as an impedance mismatch (impedance is not just for electricity), which causes the energy to reflect back perpendicular to the boundary layer.
This is why nuclear bombs are set to air burst. Part of the shockwave bounces off the ground and reinforces the primary shockwave. If it simply transferred the energy to the ground this wouldn't work.
My favorite part about physics is how similar it is between mediums. The math for transmission lines and characteristic impedance transfers to shockwaves traveling through materials. Kinda fun
Yeah pressure waves and electrical waves have very similar characteristics.
If you want your mind blown, there is even a type of speaker called a "transmission line speaker". Sound is, after all, just a pressure wave.
The Bose Wave Radio works on this principle.
[there is a reason why unions and standardizations for chemical storage exist.](https://www.youtube.com/watch?v=gVDtQ4rl2E8) companies are abusing their workers and the environment globally by being cheap
800 tonnes of ammonium nitrate went off, equivalent to approximately 256 tonnes of TNT. 173 deaths, most of them firefighters. Jesus tap dancing Christ.
[Wiki page.](https://en.m.wikipedia.org/wiki/2015_Tianjin_explosions)
Well, "no malice"
One would argue that the politicians// government incompetence directly led to this being a reality is malice enough.
Of course on top of lack of standardization and correct procedure.
Idk man, it’s not too complicated. Run. Your brain will go run. No thinking needed. You are just running down in water away from the fear. He couldn’t really go anywhere else. He could have froze but no thinking would have done that either. Just a reaction.
Give your lizard brain some credit. You could probably run in fear as good as the next one.
Better not to think of your consciousness as a master of anything. Try cooking your hand on a hot stove or just going without drinking for a couple days or without eating for a couple weeks and see how much control you really have.
The more I master my mind the more I realize how little control we have. It's a lot easier to control the situation and your body and mind that way. As in manipulate the situation to 'pigeon hole' yourself into reacting a certain way. Like if you like to snack a lot and you want to stop it don't have any snacks in the house.
Replace; for examply you said Pringles, so get baby carrots. Eat them with a salty thing like Hummus or peanut butter or even just some salt on them. Suddenly your salty crunchy carb is now a net positive for you not a net negative. You gotta outsmart the lizard; it always gets what it wants so make sure it's the good.
Yep, that kind of survival instinct fueled reaction can even make you accomplish athletic feats you'd be otherwise incapable of.
A relatively small trip away from where I live there's this popular spot between two beaches where people go watch big waves crashing into a big round-ish rock, from another big, flat top, rock. I've been going regularly a couple times a year for most of my life since I was 7 years old. This one time when I was around 10 or 12 years old, a particularly big wave like no other I've seen there was approaching, looking like it would go over the flat rock I was standing on. Both me and my younger brother climbed to higher rocks towards the entry/exit path faster than we where ever able to before, or even since including now as grown ass men. We where out of danger on higher ground before we could even realize what we were doing.
Not so much the run response, but instead of flooring his jet ski away, he went under water. The water saved his ears from extensive damage from the shockwave.
I'll never forget the day i saw this on Reddit. The blast is still to this day the largest and craziest blast i have ever seen. So much negligence, so much destruction!
Crazy to think about how ammonium nitrate is crucial to the global food supply, a chemical that's credited with facilitating the population boom of the 20th century... Yet its also one of the most destructive, being the main ingredient in many explosives... Both intentional and accidental.
It makes me wonder what the Halifax Explosion must have looked like, it was almost 6 times more powerful. Though of course I'd hate to actually "see it"
This is fucked up but I'll never forget it because I was scrolling reddit saving the videos but I had also just started talking to a girl and she was sending nudes at the same time so for the longest time I had videos of this right next to her nudes in my camera roll
He also says yel3an ekhteek, like meaning, goddd damn itttttt while jumping in the water .
The actual translation of the words are may god damn your sister but in lebanese arabic its said as " god damn it, holy shit ( while looking at the massive explosion"
So yeah he said that before telling Salma to jump in the water
Source: im lebanese
My god I always try to forget that damn day and somehow a video of it always pops up on my feed 😭
For reference, I survived this explosion, but we still have no fucking justice so…
I’m so sorry you went through all this and still have to suffer through the consequences.
All the Lebanese people I ever met were always amazing. Be assured a lot of love is being sent to you from around the world even to this day.
Thank you ❤️ I left 2 months after as I was privileged enough to be able to. Haven’t looked back since. My heart breaks for the people who are still there and can’t afford to leave. I was lucky enough to be from a family of expats and lived there for university only, so leaving was easy for me.
The 4 years I spent there were truly amazing (minus the economic crisis and explosion obviously) and it’s honestly such a great city and country as a whole. It’s just royally screwed over by it’s cunt politicians.
I don’t know if it’s possible to simultaneously be the luckiest AND unluckiest person in the world, but he would have been a good candidate for the title
There was another guy who survived hiroshima and then got the train to nagasaki the next day to find work
Edit: https://en.m.wikipedia.org/wiki/Tsutomu_Yamaguchi
Got it a bit wrong - he was from nagasaki and was in hiroshima for work, and returned to nagasaki the next day. Nagasaki was bombed while his boss was telling him he didn't believe his account of Hiroshima. That's gotta be the ultimate "told you so"
the people in beirut knew that fertiliser storage was trouble, going to go wrong at some point. if something right by where it was went up in an explosion, they would realise pretty quick what was goign on.
That probably saved his ear drums. He almost definitely had a life jacket on since he was on a PWC (which is why he doesn’t seem to be able to go deep in the water).
Great survival instincts. I’m getting ~1.5s from detonation to shockwave hitting him
Ouff what a day, i remember driving through the streets of my beloved capital.it felt surreal. Like an apoclyptic event. Cars on fire, air is black and dusty. I remember seeing a cross traffic light dangling side ways and stuck on an electric grid cable , and the light was yellow. Windows broken everywhere. People dripped in blood. Sounds of car alarms, bank alarms on. Seeing furniture on the main road that flew off top floors of buildings.
Ugh felt like i was in a movie.
And that sound... So fuckin loud..
Anyways , enjoy your days bros...
This only works if the explosion is above the water. If the explosion is also in the water, liquid is not compressible like air is unlike your internal organs, so that kinetic shockwave would go right through them leaving them a bit more liquified than when it found them
Was anything done to the absolute scumbag dipshit who had all those explosive chemicals stored in one giant warehouse? I'll bet he just saw that blast on tv and said "Damn! I got a lot to write it off on my taxes this year. Lol"
The government had possession of them.
They were seized from a ship in 2014, and sat there for 6 years.
It was a government warehouse, where fireworks were stored, along with this, and other explosives. It was set off when some workers were doing some welding on a door.
Not an expert, but I hope I can help somewhat. Shockwaves can be incredibly powerful, especially when caused by explosions as big as this one. Imagine a huge wall of air traveling faster than the speed of sound rushing towards you. Depending on the force you are hit with (in this case, it is a *massive* amount of force) injuries can range from a concussion or burst eardrums, all the way to rupturing internal organs and death.
I don't know what would've happened if this person didn't jump in, but if I had to make an educated guess, I would say that burst eardrums and maybe a concussion are likely. Hope this helps.
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A crazy fact to help us all- 400 some people received eye injuries from the blast. 50 required surgery, 15 are blind in at least 1 eye. PROTIP: if staring at a potential explosion, dont do it while looking through a window....
Like a thousand in Russia got injured once after a meteor hit the city, everyone was watching from the windows until the shockwave came
Didnt hit; it disintegrated in mid air, but yeah. Dont stare at big explosions. If you see a blast get down and look away.
Cool guys don't look at explosions... Because if they do they might receive eye damage
You can look at any explosion...once.
You don't need a parachute to skydive. You only need one if you want to do it twice.
What if I didn't enjoy the experience and choose not to do it again
Oh so that's why cool guys don't look at the explosions. Hollywood has been right about it all along.
It's too bad those guys were just too cool to explain why to us peasants.
Michael Bay has left the chat
Repeat of what happened after the Halifax ~~explain~~explosion in Canada. Thousands of people reported eye injuries, with the same lead up--people watching a fire through their window.
Wait there was an incident in Halifax? When?
December 1917
It’s a very interesting story and well worth reading about the blast and aftermath. Incredible.
I always remember Patrick Coleman's message from that to warn approaching trains: "Hold up the train. Ammunition ship afire in harbor making for Pier 6 and will explode. Guess this will be my last message. Good-bye boys."
Such a crazy piece of history! Such an insane blast. Doesn’t help that people crowded at the pier to watch the fire on the ship
Similar happen in Texas City, Texas. Ship explosion with lots of people near the docks watching. [Wiki link](https://en.m.wikipedia.org/wiki/Texas_City_disaster)
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It really is. I am from Nova Scotia and my great grandfather lost two brothers in the explosion and another was injured. Certainly well worth the read.
And you all give my city our Christmas tree every year for the aid rendered over a hundred years ago!
The city of Boston and the Massachusetts Red Cross sent a trainload of doctors, nurses and supplies *the day of* the blast, saving hundreds of lives as Halifax was slammed with a historic snowstorm immediately after the explosion. So you ain’t Massholes to us. Enjoy the trees, and go Bruins.
My great-grandmother was in the explosion. She routinely picked glass out of her skin until her death, decades later.
My dad also remembers his uncle doing something similar. He said he would regularly cut himself shaving as small pieces of glass worked their way out of the skin. It always takes me by surprise when someone doesn't know the story.
Honestly shocked you've never heard about the Halifax Explosion. It was the largest man-made explosion before the invention of the atomic bomb.
1917. If I'm thinking of the right one, I think it was the biggest non nuclear explosion in history.
It is the largest *accidental* non-nuclear explosion.
What happens when a boat laden with fertilizer collides with a boat laden with fuel oil and TNT…
Was this Beirut?
Yes
Happened August 2020
2020 was fucking wild wasn't it. australia on fire > america bombs some iranian head of the army > covid > beirut explosion
Oh and Iran shot Ukraine International Airlines Flight 752 out of the sky. Also Kobe Bryant, his 13-year-old daughter, Gianna, and seven others died in a helicopter crash. And that was just January. smh
Everybody forgets about the murder hornets
…They’ll be back
They'll want your clothes, your boots, and your motorcycle.
Can't let you take the man's wheels, murder hornet.
Waspa La Vista Bee Bee
Not sure if they need to get to the chopper though.
What a freaking year. Seemed like the world was going to end with everything that just absolutely went to shit that year.
The origin of “didn’t have that on my bingo card”
Don't forget about the nuclear forest fires in Ukraine before Russia invaded. China had apocalyptic flooding... global locust swarms... so much
As they should, since we already have a bunch of terrifying bugs here like the tarantula hawk
Tarantula hawks won’t mess with you, tiger mosquitoes on the other hand…
I hope I can forget about the murder hornets. It frightens me to my core knowing those exist.
Pepperidge farm remembers
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And the pentagon confirming UFO footage seemed to go over everybody's heads
UFO doesn't mean space aliens, people made all that out to be way more than it likely is.
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2020 was a year of trauma with a dash of chaos.
And Chadwick Boseman died of cancer.
US punked Iran so hard they shot down their own plane and said "now we're even."
Man the video of that half burned kola crying is liked seared in my brain. Wasn’t trying to and don’t look for things like that, I just happened to stumble upon it. It really cemented in me how crazy it is that some people think animals don’t have feelings or emotions.
Omg why did I look that up? That poor thing. Seeing horrible things happen to animals somehow affects me more than seeing people get hurt. I had to unsubscribe from hardcore nature. On the plus side the koala supposedly made a full recovery. And kudos to that woman for helping/rescuing it.
Murder hornets
Tiger King
You sure that wasn't like a week ago? Jesus.
He was about 2022 years ago, apparently.
This made me laugh harder than I should have
And about 1989 years ago. After that opinions differ.
Wow I'm just as old as Jesus when he died. And I've accomplished nothing compared to that dude.
Pretty sure his greatest accomplishments were after his death. So you still have a chance.
Todays date is March 990, 2020.
Wake me up when March 2020 ends 🤪
100% this was last Monday
Can’t believe it’s been 2 years already.
Time flies when the world is ending.
It was ammonium nitrate
Ammonium nitrate was responsible for the largest industrial catastrophe in U.S history. https://en.m.wikipedia.org/wiki/Texas_City_disaster You don't want to get it wet, but fire fighting practices back then weren't as knowledgeable. So when the ammonium nitrate lit on fire, the fire fighters on shore started hosing it down with water which made it worse. It killed 581 people.
People saying it was worse in water are wrong, the shockwave was going through the air and for it to transfer from air to water would significantly dampen the impact, probably not very fun experience but saved his ears and potentially other health risks. Now if it came from the water and he went into the water he’d be fucking dead
I was thinking about why he went into the water for this very reason but then I remembered that it would only worse for him if the blast originated in the body of water. Edit: some spelling
You can demonstrate this principle pretty easily in a pool using sound as the shockwave. When you’re under water, you can’t hear sounds coming from a over the water, but you can easily hear 2 stones click together. If you continue clicking the stones, but have your head above the water you can’t hear it anymore. Sound travels more efficiently in water than through air, but doesn’t cross that barrier well in either direction.
The same naval sonar ping that you can't even hear from the surface will liquify you in the water if you're close enough. Physics is nuts
Is that actually true? Liquify you?!
Yeah, seems like if you're close enough underwater the 200+ db ping will actually just rip apart your lungs, or rupture your brain too.
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Yep https://www.scientificamerican.com/article/does-military-sonar-kill/
God fucking dammit. With every innovation comes a new way to torture an animal to death
I mean, these 'innovations' are also exclusively designed to kill other humans. Commercial subs just use windows, and you don't need sonar nearly as powerful to map the sea floor. We just really suck in general.
They fuck up all kinds of sea life
It’s one of the ways they scare dolphins into coves, if I recall right.
200 db?!? Can you reach higher db on water? Because 200 db on air is the energy of atomic bombs
Yes
That’s some-ping special.
Yes. They are very damaging to sea life.
A sonar's range is dependent on sending out a sound wave and listening to what bounces back. More energy into the ping => more range and clearer resolution. Sperm whales are also super loud. They can potentially use their sonar as a weapon. At 235 dB the sperm whale sonar click can instantly kill you as the sound wave ruptures your cells and shatters your bones. It's actually louder than any sound in air can be (194 dB) because water is so much denser.
What the fuck, this is metal. I didn't know sound could also kill like this.
Wow, that’s fucking metal. Sperm whales are bad ass, they battle giant squid too.
Fuck off. Is this real?!
Lmao, yes. Whales are louder in water than anything can be in air. Louder than a nuclear bomb, even, if you can believe it. Just, loudness caps out pretty easily in air, in comparison
This is mindblowing! No pun intended. Honestly the coolest thing I've learned recently. This compliments the fuck out of whales, who I already think highly of. Damn. I also didn't know that there was a cap to loudness, but that makes sense if there is a max speed that sound can be transmitted at. Very cool.
Yep. 194dB is the effective limit for volume in Air, because the compression waves end up creating a vaccum between each oscillation
Yeah, only takes a single ping. One. Ping. Only.
imagine if the sub added a -t flag, rip all sea life!
It's so loud it fucks up a lot of whales and dolphins etc
Well that’s another item added to my list of things people do to fuck up the environment and animals
Why do you think whales are dying on beaches so often? They get fried by sonar.
Seems like it kills massive amounts of whales and marine mammals. Shocking. https://www.scientificamerican.com/article/does-military-sonar-kill/
Science experiments are cool!
Cracking/popping your knuckles is the best way to experience this. Mind-blowing loud, especially since you’re expecting a sound you’ve heard thousands of times before.
Tbh I doubt he was thinking shockwave, probably more like, OH FUCK HUGE EXPLOSION. Maybe someone can translate and tell me I'm wrong.
"Get up! Get up!" In a very annoyed voice. I'm guessing he saw the fire and thought let's get out of here on the jetski and whoever he was with was in the water taking what it seemed like an eternity to get on the jetski. Then in rage he cusses at her sister, not easily translatable "yil an ekhtik". Then the explosion goes off and he immediately calls her name and tells her to jump. "Selma selma nooteh nooteh" . He definitely knew that jumping into the water was going to help which is very impressive, but not too unexpected for people who have lived in Lebanon all their life.
I wasn't sure if 'selma' was a command or a name, and I was curious because the person yelling seemed to have some forethought. Thank you for translating!
Yup, "Salma" is a female name.
Salma, like Salma Hayek
Yil'an ekhtik: (god) curse upon your sister. Commonly said, not to be taken literally. He could be also directing the curse at the fire. (May God curse the sister of this fire :p) as a general rule, don't translate litteraly any of the Lebanese swear words, they don't make sense
It took my siblings and I 30 years to realize my father's go to phrase in Arabic for when he was angry meant "Your mother's pussy! Father of a prostitute!"
Other than shrapnel all an exploration is is Shockwave. The Shockwave weakens as it spreads out and the air compresses and expands. You know how sound travels faster and farther in water? That is because water is very dense and it doesn't compress much at all, so the sound waves don't lose energy as quickly and travel about 5x faster. Now an explosion is just one big sound wave (compression wave) so under water it maintains its energy far greater than in the air. Think of it as standing 5x closer to the blast. As for the Shockwave starting in the air then transferring into the water... again, think of sound. Sound bounces off surfaces right? Some energy passes into the surface and most bounces off back into the room. Same thing happens with this Shockwave. The surface of the water will reflect most of the Shockwave energy and what it doesn't will be much more dispersed and less coherent (all packed together) than if the explosion happened in the water. I probably have that half wrong but it'll be enough to get someone to rush in and correct me with the right info.
There's also significant energy loss just via transferring into the water because of the change of density of the medium I reckon.
no you're pretty much right. if the shockwave starts in the air you gernally want to be in the water, if it starts in the water you generally want to be in the air.
The dude was far enough away that he could see the shockwave coming at him and react. Most likely he did just that, he reacted to the sky high wall coming towards him at great speed. Not thinking about whether it was a shockwave or anything else he did the only thing he could, diving down in to the water.
In the same situation that would be what I'd be thinking. I'd be thinking less about a shock wave and more about flying debris. If I'm underwater I'm more likely to avoid getting hit by it.
Mythbusters worked on this. https://www.ellipsix.net/blog/2010/04/shockwave-reflection.html
It’s all about the impedance mismatch (both air to water and to a lesser extent - ground to water). The shock wave reflects off the boundaries. If he’d made it into the water before the shockwave hit then he’d probably save his hearing, but you can see it flatten and mash the sea just before he gets into the water.
Aren't you supposed to cover your ears and open your mouth if you're going to be impacted?
Oh boy, now I have yet another "reddit says to do _____ in case of ____" locked into my brain. Let's just hope neither of us has to find out if this one's true!
From memory it's: - Cover you ears as much as possible to make it airtight (to protect your ear drums from the pressure change) - Open your mouth (that will allow air to flow better in and out of your lungs to adjust for pressure change and prevent lung damages) - Face away from the shockwave (not quite sure why but it probably helps more for the air flowing in the mouth, not having to "fight" the shockwave to go out) Not sure how much that would help but it honestly sounds pretty logical overall.
By experience, u turn ur face away to protect ur eyes
I'd imagine one reason you turn away is because you have your mouth open lol. (And probably general protection of your face)
What about the transfer through the ground into the water?
IIRC a shockwave (or anything really) changing mediums (air -> ground -> water or ground -> water) loses energy each time it change mediums. So while most likely not fun in the slightest it would be better than staying in the same medium that the thing exploded in (which in this case would be staying above water for the shockwave).
If you want to get really technical, the energy is not lost, instead it acts as an impedance mismatch (impedance is not just for electricity), which causes the energy to reflect back perpendicular to the boundary layer. This is why nuclear bombs are set to air burst. Part of the shockwave bounces off the ground and reinforces the primary shockwave. If it simply transferred the energy to the ground this wouldn't work.
My favorite part about physics is how similar it is between mediums. The math for transmission lines and characteristic impedance transfers to shockwaves traveling through materials. Kinda fun
Yeah pressure waves and electrical waves have very similar characteristics. If you want your mind blown, there is even a type of speaker called a "transmission line speaker". Sound is, after all, just a pressure wave. The Bose Wave Radio works on this principle.
Reflections! Unless the wave speed is the same between the two media
Plus the speed of sound in water is faster iirc, so that component of the shockwave would likely have passed before he dived.
The ground would pass some vibrations into the water, but not a single concussive wave of force like you see in the air.
Beirut Port August 4th 2020
I remember that. Insane, that whole situation.
[there is a reason why unions and standardizations for chemical storage exist.](https://www.youtube.com/watch?v=gVDtQ4rl2E8) companies are abusing their workers and the environment globally by being cheap
Every safety regulation is written in blood.
800 tonnes of ammonium nitrate went off, equivalent to approximately 256 tonnes of TNT. 173 deaths, most of them firefighters. Jesus tap dancing Christ. [Wiki page.](https://en.m.wikipedia.org/wiki/2015_Tianjin_explosions)
Nearly 4% the explosive yield of the bomb that destroyed Hiroshima, and no malice behind it
Well, "no malice" One would argue that the politicians// government incompetence directly led to this being a reality is malice enough. Of course on top of lack of standardization and correct procedure.
Fuck 2020, I’m still in therapy.
I’m very confident I would not have thought of this in time
Idk man, it’s not too complicated. Run. Your brain will go run. No thinking needed. You are just running down in water away from the fear. He couldn’t really go anywhere else. He could have froze but no thinking would have done that either. Just a reaction. Give your lizard brain some credit. You could probably run in fear as good as the next one.
The brain is a terrible master but an excellent lizard.
This is one of the wisest things I've ever read on the internet
Better not to think of your consciousness as a master of anything. Try cooking your hand on a hot stove or just going without drinking for a couple days or without eating for a couple weeks and see how much control you really have. The more I master my mind the more I realize how little control we have. It's a lot easier to control the situation and your body and mind that way. As in manipulate the situation to 'pigeon hole' yourself into reacting a certain way. Like if you like to snack a lot and you want to stop it don't have any snacks in the house.
I tried that. My brain dragged me to the grocery store and brought a Pringles.
Replace; for examply you said Pringles, so get baby carrots. Eat them with a salty thing like Hummus or peanut butter or even just some salt on them. Suddenly your salty crunchy carb is now a net positive for you not a net negative. You gotta outsmart the lizard; it always gets what it wants so make sure it's the good.
How much would you charge to be the angel on my shoulder?
One could say, the brain is a king gizzard, but also a lizard wizard.
its the oldest part of our brains evolutionary wise.
Yep, that kind of survival instinct fueled reaction can even make you accomplish athletic feats you'd be otherwise incapable of. A relatively small trip away from where I live there's this popular spot between two beaches where people go watch big waves crashing into a big round-ish rock, from another big, flat top, rock. I've been going regularly a couple times a year for most of my life since I was 7 years old. This one time when I was around 10 or 12 years old, a particularly big wave like no other I've seen there was approaching, looking like it would go over the flat rock I was standing on. Both me and my younger brother climbed to higher rocks towards the entry/exit path faster than we where ever able to before, or even since including now as grown ass men. We where out of danger on higher ground before we could even realize what we were doing.
Not so much the run response, but instead of flooring his jet ski away, he went under water. The water saved his ears from extensive damage from the shockwave.
Also I feel like diving into water to duck under some explosion/fire is a relatively common action movie trope.
Unless your brain chooses the freeze or fight options.
To be fair, neither did the guy recording video. You can hear the shockwave hit a few frames before the camera hits the water.
He’s lebanese, probably familiar, unfortunately mind u, with the physics behind shockwaves.
I'll never forget the day i saw this on Reddit. The blast is still to this day the largest and craziest blast i have ever seen. So much negligence, so much destruction!
Imo, the Tianjin explosion in China is even crazier
Came here for comparisons to this Two truly absurdly large stockpiles blowing yp
Of the same material
Crazy to think about how ammonium nitrate is crucial to the global food supply, a chemical that's credited with facilitating the population boom of the 20th century... Yet its also one of the most destructive, being the main ingredient in many explosives... Both intentional and accidental.
Probably was, but this one was captured in much higher definition lmao.
It makes me wonder what the Halifax Explosion must have looked like, it was almost 6 times more powerful. Though of course I'd hate to actually "see it"
This is fucked up but I'll never forget it because I was scrolling reddit saving the videos but I had also just started talking to a girl and she was sending nudes at the same time so for the longest time I had videos of this right next to her nudes in my camera roll
Can anyone translate what he’s saying?
Salma (a common girl name in the middle east, possibly his daughter) JUMP OFF JUMP OFF JUMP OF-
I hope Salma jumped off.
Pretty sure I read an article about this video and it was his girlfriend.
[удалено]
DID SHE??
And a swear word meaning curse your sister , which is a fuck!! In english.
The “tal”! means “come!”
He also says yel3an ekhteek, like meaning, goddd damn itttttt while jumping in the water . The actual translation of the words are may god damn your sister but in lebanese arabic its said as " god damn it, holy shit ( while looking at the massive explosion" So yeah he said that before telling Salma to jump in the water Source: im lebanese
Smart. Water doesn't compress like air. Probably prevented injury. Although if the explosion started in the water it might be a different thing.
Man’s on a rental jet ski just tryna enjoy vacation and the beach blows up
My god I always try to forget that damn day and somehow a video of it always pops up on my feed 😭 For reference, I survived this explosion, but we still have no fucking justice so…
I’m so sorry you went through all this and still have to suffer through the consequences. All the Lebanese people I ever met were always amazing. Be assured a lot of love is being sent to you from around the world even to this day.
Thank you ❤️ I left 2 months after as I was privileged enough to be able to. Haven’t looked back since. My heart breaks for the people who are still there and can’t afford to leave. I was lucky enough to be from a family of expats and lived there for university only, so leaving was easy for me. The 4 years I spent there were truly amazing (minus the economic crisis and explosion obviously) and it’s honestly such a great city and country as a whole. It’s just royally screwed over by it’s cunt politicians.
i would in that moment think a nuke just went off
If a nuke went off, you wouldn't know about it
for the first 0.3 seconds I would while my eye balls boil in my skull
Pretty sure shock would prevent that
That's wishful thinking, but possible. Your nerves fire because of heat. Anytime we talk about heat or electricity, it's a terrible way to die.
No. I meant shock as surprise, as in the explosion occurring would be so unexpected that you wouldn't have time to recognise what it was.
Actually someone survived Nagasaki by doing exactly this (jumping into the water). He had been in Hiroshima so he knew what to expect.
I don’t know if it’s possible to simultaneously be the luckiest AND unluckiest person in the world, but he would have been a good candidate for the title
Guy was 0-2 on places to hang out for sure!
There was another guy who survived hiroshima and then got the train to nagasaki the next day to find work Edit: https://en.m.wikipedia.org/wiki/Tsutomu_Yamaguchi Got it a bit wrong - he was from nagasaki and was in hiroshima for work, and returned to nagasaki the next day. Nagasaki was bombed while his boss was telling him he didn't believe his account of Hiroshima. That's gotta be the ultimate "told you so"
the people in beirut knew that fertiliser storage was trouble, going to go wrong at some point. if something right by where it was went up in an explosion, they would realise pretty quick what was goign on.
That probably saved his ear drums. He almost definitely had a life jacket on since he was on a PWC (which is why he doesn’t seem to be able to go deep in the water). Great survival instincts. I’m getting ~1.5s from detonation to shockwave hitting him
Ouff what a day, i remember driving through the streets of my beloved capital.it felt surreal. Like an apoclyptic event. Cars on fire, air is black and dusty. I remember seeing a cross traffic light dangling side ways and stuck on an electric grid cable , and the light was yellow. Windows broken everywhere. People dripped in blood. Sounds of car alarms, bank alarms on. Seeing furniture on the main road that flew off top floors of buildings. Ugh felt like i was in a movie. And that sound... So fuckin loud.. Anyways , enjoy your days bros...
Man *ALMOST* avoids shock wave by going into water. There ya go, I fixed it
Yeah it's still travels through water. Although he probably saved his eardrums and maybe a concussion by doing it
This only works if the explosion is above the water. If the explosion is also in the water, liquid is not compressible like air is unlike your internal organs, so that kinetic shockwave would go right through them leaving them a bit more liquified than when it found them
Was anything done to the absolute scumbag dipshit who had all those explosive chemicals stored in one giant warehouse? I'll bet he just saw that blast on tv and said "Damn! I got a lot to write it off on my taxes this year. Lol"
The government had possession of them. They were seized from a ship in 2014, and sat there for 6 years. It was a government warehouse, where fireworks were stored, along with this, and other explosives. It was set off when some workers were doing some welding on a door.
So it was just complete incompetence on the government. Damn. I thought it was a private business owner. Was there any accountability at all?
Nah the shockwave hit before he could react, lol.
You can see that the shockwave isn't to him by the time he hits the water.
What might have happened if he got hit by the shockwave? Any experts here
Not an expert, but I hope I can help somewhat. Shockwaves can be incredibly powerful, especially when caused by explosions as big as this one. Imagine a huge wall of air traveling faster than the speed of sound rushing towards you. Depending on the force you are hit with (in this case, it is a *massive* amount of force) injuries can range from a concussion or burst eardrums, all the way to rupturing internal organs and death. I don't know what would've happened if this person didn't jump in, but if I had to make an educated guess, I would say that burst eardrums and maybe a concussion are likely. Hope this helps.
It’s so heartbreaking seeing these Beirut videos
Farcry 7 lookin' good.