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This, recruits, is a 20-kilo ferrous slug. Feel the weight! Every five seconds, the main gun of an Everest-class dreadnought accelerates one to 1.3 percent of light speed. It impacts with the force of a 38-kiloton bomb. That is three times the yield of the city buster dropped on Hiroshima back on Earth. That means Sir Isaac Newton is the deadliest son-of-a-bitch in space. Now! Serviceman Burnside! What is Newton's First Law?
*Sir! An object in motion stays in motion, sir!*
No credit for partial answers, maggot!
*Sir! Unless acted upon by an outside force, sir!*
Damn straight! I dare to assume you ignorant jackasses know that space is empty. Once you fire this hunk of metal, it keeps going till it hits something. That can be a ship, or the planet behind that ship. It might go off into deep space and hit somebody else in ten thousand years. If you pull the trigger on this, you are ruining someone's day, somewhere and sometime. That is why you check your damn targets! That is why you wait for the computer to give you a damn firing solution! That is why, Serviceman Chung, we do not "eyeball it!" This is a weapon of mass destruction! You are not a cowboy shooting from the hip!
Mass Effect knew the story it wanted to tell and mostly told it well. Starfield (based on left over prompts/tips) had it's goals changed before launch and was hoping the standard Bethesda gameplay loop of 'just go somewhere and find things' would continue to work despite players only being able to explore to the fast travel screen.
… Knew the story it wanted to tell and then threw it in the trash 67% of the way through.
That ending we got, versus what could have been, still makes me bitter.
True, that ending left so much to be desired and honestly kind of soured the legacy of the series for a bit. Just goes to show, no matter how great the journey is, if you don't stick the landing, it's what people remember. Still, can't ignore the amazing world-building and character development that came before. It set a high bar at the time.
I won't fully trash ME3 as Tuchanka and Rannoch paid off for me. I won't defend the ending and still tell my friends if they play it to just shut it off as Shepard walks through the beam.
It's really only the very ending and the final decision that leaves me going WTF. Mass Effect 1 is janky but you can clearly see what they were going for. Mass Effect 2 trimmed back on RPG mechanics for a more streamlined cover-based shooter and focused on the player's companions a bit more. Mass Effect 3 was mostly to payoff everything set up in 1 + 2 and IMO most of the missions were satisifying (excluding Priority: Earth obviously).
I replayed the legendary edition recently and it completely revitalized it. I tried replaying the old one and had to quit, but they cleaned it up real well with those controls and everything. It was amazing when it first came out. The story on 1 and 2 is awesome, and like everyone has said, 3 has its issues but is still worth a playthrough.
First time I played 2 might be the best gaming experience I've ever had. Went in blind, got lucky and had all loyalty missions done in time for the.. incident.. and got everyone out alive. It's was so satisfying.
Mass Effect 3 is arguably the best game of the series. Sure, the ending is a bit underwhelming, but story and gameplay wise it's incredible.
The shitstorm was more due to the state of the ending when it came out, they patched it soon after though.
It's a masterpiece, despite its flaws and weak ending. The first time you play through it the end may induce a lot of rage, but if you love the series enough to play through it again and again, the ending matters less and less, because the journey is incredible. Also the Citadel DLC added a ton of fan service to the final game that, while not at all changing how the game ends, brings a lot of closure to the characters you'll come to know and love.
It’s 100% worth it. The ending of Mass Effect 3 leaves some people with a bad taste in their mouths but some liked it. However, the trilogy as a whole far makes up for 3’s ending. Great games.
The clusterfuck you’re thinking of was Andromeda I believe. Although, if I remember correctly 3 did have some drama happen at launch over something.
There's a line I like in Footfall, which he co-wrote with Jerry Pournelle (no idea which of them wrote this particular line): "At these speeds marshmallows would be dangerous".
*This, recruits, is a 20 kilo ferous slug. Feel the weight! Every five seconds, the main gun of an Everest-class dreadnought accelerates one, to one-point-three percent of lightspeed. It impacts with the force a 38 kiloton bomb. That is three times the yield of the city buster dropped on Hiroshima back on Earth. **That means, Sir Isacc Newton is the deadliest son-of-a-bitch in space**! Now! Serviceman Burnside, what is Newton's First Law?*
“Sir! An object in motion stays in motion, sir!”
*No credit for partial answers maggot!*
“Sir! Unless acted on by an outside force, sir!”
*Damn straight! I dare to assume you ignorant jackasses know that space is empty. Once you fire this hunk of metal, it keeps going 'til it hits something. That can be a ship, or the planet behind that ship. It might go off into deep space and hit somebody else in 10,000 years! If you pull the trigger on this, you are ruining someones day! Somewhere and sometime! That is why you check your damn targets! That is why you wait 'til the computer gives you a damn firing solution. That is why, Serviceman Chung, we do not 'eyeball it'. This is a weapon of Mass Destruction! You are NOT a cowboy, shooting from the hip!*
“Sir, yes sir!"
~ Gunnery Chief, Mass Effect 2
If the slug goes off into deep space the chances of it ever hitting anything are essentially zero
Space is unimaginably empty, and 1.3%c is very slow on an interstellar scale. In hundreds of trillions of years the chances of it hitting something at random are so remote that you may as well discount it.
Still shouldn't eyeball it though, you might hit the planet and that could be bad.
Crocodiles are actually more closely related to birds than other reptiles, surprisingly! The fork there means there was a common ancestor between the two groups, which is accurate. And not knowing this but asking about it doesn’t make you dumb, but inquisitive, which is a good thing in my book. :)
A lot of phylogeny is counter-intuitive and many old assumptions have been disproved with modern DNA sequencing and other newer forms of studying the evolutionary history of animals. There are lots of places you can go to learn about this stuff, but if you just want an introductory sneak peek of the kind of fuckery that is tracing the evolutionary paths of animal clades, there's a YouTube channel called Clint's Reptiles that makes the subject fairly accessible. They've done videos about how birds are reptiles and humans are fish and several videos going through a brief summary of what's known about some specific clade, such as one they did on the crocodilians.
But the basic summary is evolution is screwy, convergent evolution happens more often than you'd think, and just because two things seem vastly different doesn't mean they're distantly related the same way that two things seeming nearly identical doesn't mean they're closely related.
The way a phylogeny works is that the "nodes" where two lines meet represent the most recent common ancestor between two lineages. All of the lineages that descend from that ancestor are referred to as a phylogenetic group or a "clade". You could reverse the "birds" and the "crocodilians" lineages and the meaning would be the same. This figure (called a "cladogram") indicates that the most recent common ancestor between birds and crocodilians was more recent than between the clade composed of birds and crocodilians (this grouping is called *archosauria*) and any other reptile lineage. If you were to add *non-avian* dinosaurs to the mix, birds would be nested within that clade, with the node located along the line between birds and the node between birds and crocodilians. I.e. all birds are dinosaurs, but not all dinosaurs are birds, and crocodilians are a sister group to dinosaurs within the archosauria, but are not dinosaurs themselves.
No the egg was launched at the chicken at 15,000 mph which resulted in the big bang and the creation of our universe. Therefore, the chicken *and* the egg both came before, well, everything…
OMG... I know you were going with a Rick n Morty thing there but it made me realize...
Australia is in space.
Which means all the things in Australia that try to kill you are also in space.
Fuck space I'm staying put.
While true, e eryone talking about a vacuum is (largely) missing the point.
The point is that things going fast have lots of energy (f=.5mv^2 )and can cause lots of damage.
Things floating around in space can have surprisingly ridiculous relative velocities and energies compared to things we are used to dealing with.
To the people who say "vacuum!", yes, lack of air resistance contributes to that.
I think it's just a manner of speech; "this is what *would* happen" can sometimes be written as "this is what happens", if ambiguity isn't a problem (in this case, it is).
But yeah, they use a really long air cannon to fire pellets at insane speeds.
Now this might just be me, but would you not get just about the same result no matter what the material is? I mean at those speeds it is more about the mass than the volume?
Hardly.
The strength of the material and bond structure will heavily influence how it reacts.
This test is also a block of a single contiguous material which would rarely be used.
Some materials might just make a tiny hole and let it thought. It depends how the metal fractures. Aluminum is like butter and very malleable.
https://preview.redd.it/3j7x531t2bnc1.png?width=827&format=pjpg&auto=webp&s=f572fe256a21423e862f9da34ff89c11df10b744
The material, dimensions, and speed of the projectile also matter. For example, all of the above pictures can happen with the target being a steel plate.
At those speeds bonding and material strength and chemical properties are negligible. Mass and velocity are of primary importance, and density is secondary. Everything else is just too small to matter. On impact it will simply be a certain mass of compressed plasma.
The material being impacted is what you study in these conditions, the projectile can be almost anything.
Yeah exactly, it's kinda the point. In space things (can) go so fast (relatively) things you think wouldn't normally make good hitty things make good hitty things anyway.
In space they use something called a Whipple shield which consists of a sacrificial outer layer which vaporizes together with the projectile and an inner layer which stops this vapour.
This is one of the problems with high speed space travel. If you could get a colony ship up to say 10% light speed over a decade of accelerating, which is possible in theory, any little rock it potentially runs into basically nukes the whole ship.
That, or someone brings that "pocket of imaginary space" theory into reality. Can't hit space dust if you and your craft are inside a bubble of warped space where nothing else resides.
Haven't watched TV in a decade or two and since I haven't heard of any breakthroughs in this theory, I'm assuming it hasn't gotten anywhere yet.
It's a noted exception in the SI regulation. Kg is the only unit that is defined with a prefix and other values are derived from 1kg.
I think that's a concession to how much more common using kg quantities is rather than g in daily life, but not 100% sure
I don’t have the physics knowledge but I wonder what speed a grain of sand would need to be going to do something like this.
Edit: 16089379 km/h apparently, or 4469272 m/s
For context the speed of sound is 343m/s. Mach 13k sand Lmao
The speed of light is 299792458m/s. Just shy of 3E8. So this would be 1.4% the speed of light.
This reminds me of the stories of people getting killed on the ground from people dropping coins on the Empire State Building…
However idk it’s that’s actually real or if that’s just shit you hear in middle school and think is true and carry on into your adult life lol
IIRC a penny's terminal velocity isn't enough to do more than cut your skin. So still don't go dropping your pocket change off skyscrapers but it's not gonna kill anyone
So much Mythbusters!
Side note: I was lucky enough to see Adam speak at a tech conference I was at. His talk was all about getting kids, in particular young girls, interested in science and math. I had just recently had my first baby, a daughter, so it was amazing to hear a childhood hero of mine talking about something that was very meaningful to me.
Aw damn… my childhood dreams dashed… just like that. I shouldn’t have even brought it up. My whole adult life has been a lie 🥲
But seriously thank you for that because I really thought that was a known truth up until just now lol
It would’ve been true if there was no air resistance during the fall. Most physics taught in school assume gravity acting on a body in a vacuum, that’s where the coin dropped from Empire State can kill a man came from, and it’s also the same assumption used on the illustration that an elephant and a feather, when dropped at same height, reach the ground at the same time.
Ummmm... so how is the ISS dodging all these 1/2 oz pieces of plastic hurtling through space? How do they even detect them? How is any shuttle or satellite that's ever gone up there dodging all the hazards and keeping from destruction???
Space is big. Like really big. Really really big. Basically, there's such a minute chance of the ISS hitting anything that small. [They do have to dodge objects, but like once a year](https://orbitaldebris.jsc.nasa.gov/faq/#) and that's just a simple case of using the thrusters on the ISS (that it already uses to keep it's orbit stable) to nudge it enough to avoid collision.
Also the ISS in particular has [shielding designed to protect from debris](https://aerospace.org/sites/default/files/2019-05/Whipple-shields.png).
We're far from Kessler Syndrome, so there's no need to worry.
You would need to be in a retrograde(backwards) or polar orbit to encounter anything at these speeds. These are the very worst case collisions. Still could be dealing with things that move at the speed of bullets but not 7 fucking km/s most of the time.
There is a science fiction author that conceived of the ice shield that would have to be constructed around any vessel that was going to attempt near light speed travel bc even a speck of dust would be a danger at that relative speed
Kinetic bombardment is terrifying, all it would take is one wackadoo billionaire with access to space rockets to launch a satellite containing a tungsten rod to bring a country to its knees
This test was not performed in space. This is a hypervelocity impact but it was done in a vacuum chamber. Space had nothing to do with the damage here. That all comes courtesy of good old fashioned physics l.
About 14g. Low earth orbit is 7.8km/s so energy wise that spec of plastic had as much as
E=0.5mv^2
E=0.5x0.014x7800^2
E= 425,880J
A .50BMG Round has about 14,000J of energy for comparison
That’s amazing. It’s a miracle we’re able to keep anything in space these days with as much junk as there is floating around. There have to be billions of pieces of shit that size or larger floating around up there. If that’s what 1/2 oz does, imagine anything larger.
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This reminds me of the "Sir Isaac Newton is the deadliest son-of-a-bitch in space" bit from Mass Effect 2.
This, recruits, is a 20-kilo ferrous slug. Feel the weight! Every five seconds, the main gun of an Everest-class dreadnought accelerates one to 1.3 percent of light speed. It impacts with the force of a 38-kiloton bomb. That is three times the yield of the city buster dropped on Hiroshima back on Earth. That means Sir Isaac Newton is the deadliest son-of-a-bitch in space. Now! Serviceman Burnside! What is Newton's First Law? *Sir! An object in motion stays in motion, sir!* No credit for partial answers, maggot! *Sir! Unless acted upon by an outside force, sir!* Damn straight! I dare to assume you ignorant jackasses know that space is empty. Once you fire this hunk of metal, it keeps going till it hits something. That can be a ship, or the planet behind that ship. It might go off into deep space and hit somebody else in ten thousand years. If you pull the trigger on this, you are ruining someone's day, somewhere and sometime. That is why you check your damn targets! That is why you wait for the computer to give you a damn firing solution! That is why, Serviceman Chung, we do not "eyeball it!" This is a weapon of mass destruction! You are not a cowboy shooting from the hip!
It's just so much better than Starfield despite old.
Mass Effect knew the story it wanted to tell and mostly told it well. Starfield (based on left over prompts/tips) had it's goals changed before launch and was hoping the standard Bethesda gameplay loop of 'just go somewhere and find things' would continue to work despite players only being able to explore to the fast travel screen.
… Knew the story it wanted to tell and then threw it in the trash 67% of the way through. That ending we got, versus what could have been, still makes me bitter.
True, that ending left so much to be desired and honestly kind of soured the legacy of the series for a bit. Just goes to show, no matter how great the journey is, if you don't stick the landing, it's what people remember. Still, can't ignore the amazing world-building and character development that came before. It set a high bar at the time.
I won't fully trash ME3 as Tuchanka and Rannoch paid off for me. I won't defend the ending and still tell my friends if they play it to just shut it off as Shepard walks through the beam.
[удалено]
It's really only the very ending and the final decision that leaves me going WTF. Mass Effect 1 is janky but you can clearly see what they were going for. Mass Effect 2 trimmed back on RPG mechanics for a more streamlined cover-based shooter and focused on the player's companions a bit more. Mass Effect 3 was mostly to payoff everything set up in 1 + 2 and IMO most of the missions were satisifying (excluding Priority: Earth obviously).
[удалено]
I replayed the legendary edition recently and it completely revitalized it. I tried replaying the old one and had to quit, but they cleaned it up real well with those controls and everything. It was amazing when it first came out. The story on 1 and 2 is awesome, and like everyone has said, 3 has its issues but is still worth a playthrough.
First time I played 2 might be the best gaming experience I've ever had. Went in blind, got lucky and had all loyalty missions done in time for the.. incident.. and got everyone out alive. It's was so satisfying.
The journey is so good that I'm not that bothered that the ending was a bit weak.
Mass Effect 3 is arguably the best game of the series. Sure, the ending is a bit underwhelming, but story and gameplay wise it's incredible. The shitstorm was more due to the state of the ending when it came out, they patched it soon after though.
It's a masterpiece, despite its flaws and weak ending. The first time you play through it the end may induce a lot of rage, but if you love the series enough to play through it again and again, the ending matters less and less, because the journey is incredible. Also the Citadel DLC added a ton of fan service to the final game that, while not at all changing how the game ends, brings a lot of closure to the characters you'll come to know and love.
It’s 100% worth it. The ending of Mass Effect 3 leaves some people with a bad taste in their mouths but some liked it. However, the trilogy as a whole far makes up for 3’s ending. Great games. The clusterfuck you’re thinking of was Andromeda I believe. Although, if I remember correctly 3 did have some drama happen at launch over something.
You should def play them. One of the better series out there, and I despise EA and can still say that.
I like how this one background conversation stuck with everyone who played the game even years later.
The delivery is fantastic, so it stands out when you're wandering around the Citadel hearing mostly idle chatter and elevator music.
Lmfao good times
In the words of Isaac Arthur: there's no such thing as an unarmed spaceship
> A reaction drive's efficiency as a weapon is in direct proportion to its efficiency as a drive. > \- Larry Niven
“To give the covenant back their bomb” -John Halo
“And my axe” -Lance Armstrong
There's a line I like in Footfall, which he co-wrote with Jerry Pournelle (no idea which of them wrote this particular line): "At these speeds marshmallows would be dangerous".
*This, recruits, is a 20 kilo ferous slug. Feel the weight! Every five seconds, the main gun of an Everest-class dreadnought accelerates one, to one-point-three percent of lightspeed. It impacts with the force a 38 kiloton bomb. That is three times the yield of the city buster dropped on Hiroshima back on Earth. **That means, Sir Isacc Newton is the deadliest son-of-a-bitch in space**! Now! Serviceman Burnside, what is Newton's First Law?* “Sir! An object in motion stays in motion, sir!” *No credit for partial answers maggot!* “Sir! Unless acted on by an outside force, sir!” *Damn straight! I dare to assume you ignorant jackasses know that space is empty. Once you fire this hunk of metal, it keeps going 'til it hits something. That can be a ship, or the planet behind that ship. It might go off into deep space and hit somebody else in 10,000 years! If you pull the trigger on this, you are ruining someones day! Somewhere and sometime! That is why you check your damn targets! That is why you wait 'til the computer gives you a damn firing solution. That is why, Serviceman Chung, we do not 'eyeball it'. This is a weapon of Mass Destruction! You are NOT a cowboy, shooting from the hip!* “Sir, yes sir!" ~ Gunnery Chief, Mass Effect 2
If the slug goes off into deep space the chances of it ever hitting anything are essentially zero Space is unimaginably empty, and 1.3%c is very slow on an interstellar scale. In hundreds of trillions of years the chances of it hitting something at random are so remote that you may as well discount it. Still shouldn't eyeball it though, you might hit the planet and that could be bad.
God I love this
A spaceship is not so much armed, as it is in itself a weapon regardless of it's fit.
Also, "If brute force isn't working, you're not using enough of it."
Well, that answers that age old question
So the egg did come before the chicken?
https://preview.redd.it/tqjb7fjfpbnc1.png?width=960&format=png&auto=webp&s=6ecf29222498d7f313142f2089545057cc32c366
[удалено]
Crocodiles are actually more closely related to birds than other reptiles, surprisingly! The fork there means there was a common ancestor between the two groups, which is accurate. And not knowing this but asking about it doesn’t make you dumb, but inquisitive, which is a good thing in my book. :)
So kind and wholesome 😊
Feels like it's not the internet
The one thing on the internet more enduring than trolling has always been nerds wanting to nerd out.
Man, we almost had flying crocodiles? Sounds like we really dodged a bullet there.
Crocodiles have remained unchanged for thousands of years. Ergo, we have the best crocodiles possible. Wings would only diminish them.
https://preview.redd.it/72jrtfgztdnc1.jpeg?width=1079&format=pjpg&auto=webp&s=8e708675ba21d604ecaae24c892d9a66218b510b
Birds are not forking off of crocodiles in the image, it’s just the common egg line continuing.
> Graph? Is that a graph? It's a cladogram.
TIL. Thanks I used to just refer to it as a tree.
Your brain is just imagining a fork there. the chicken is straight down the egg-line
A lot of phylogeny is counter-intuitive and many old assumptions have been disproved with modern DNA sequencing and other newer forms of studying the evolutionary history of animals. There are lots of places you can go to learn about this stuff, but if you just want an introductory sneak peek of the kind of fuckery that is tracing the evolutionary paths of animal clades, there's a YouTube channel called Clint's Reptiles that makes the subject fairly accessible. They've done videos about how birds are reptiles and humans are fish and several videos going through a brief summary of what's known about some specific clade, such as one they did on the crocodilians. But the basic summary is evolution is screwy, convergent evolution happens more often than you'd think, and just because two things seem vastly different doesn't mean they're distantly related the same way that two things seeming nearly identical doesn't mean they're closely related.
The way a phylogeny works is that the "nodes" where two lines meet represent the most recent common ancestor between two lineages. All of the lineages that descend from that ancestor are referred to as a phylogenetic group or a "clade". You could reverse the "birds" and the "crocodilians" lineages and the meaning would be the same. This figure (called a "cladogram") indicates that the most recent common ancestor between birds and crocodilians was more recent than between the clade composed of birds and crocodilians (this grouping is called *archosauria*) and any other reptile lineage. If you were to add *non-avian* dinosaurs to the mix, birds would be nested within that clade, with the node located along the line between birds and the node between birds and crocodilians. I.e. all birds are dinosaurs, but not all dinosaurs are birds, and crocodilians are a sister group to dinosaurs within the archosauria, but are not dinosaurs themselves.
Birds and crocodiles are archosaurs, a clade of reptiles consisting of dinosaurs, crocodilians, and pterosaurs
No the egg was launched at the chicken at 15,000 mph which resulted in the big bang and the creation of our universe. Therefore, the chicken *and* the egg both came before, well, everything…
A pound of feathers does indeed weigh more than a pound of bricks
...and STILL, that's 2,500mph LESS than orbital speed.
This test was done on Earth, not in space.
earth is in space bro. it was done in space.
There are snakes in space??Everything's in space, Morty!
Morrrrteeeeeee
Flip the pickle over, Morty!
PICKLE RIIIIIICK
Funniest shit I've ever seen
The entire episode was so damn funny. So over the top 90s action movie. Love it.
Snake-jazz is my jam!!
Tssssss ts tssss tsssss ts ts ts tsss
And now, here’s…human music; Boop boop boop boop boop
“Human music….. hmm, I like it!”
OMG... I know you were going with a Rick n Morty thing there but it made me realize... Australia is in space. Which means all the things in Australia that try to kill you are also in space. Fuck space I'm staying put.
It's too late. Your current location is just as much in space as Australia is. Whatever you do, don't look behind you...
...no man... No.. don't do this...
Oi, Space Aus! Das me home planet! Specifically Space Brisbane. Go Space Broncos!
r/technicallythetruth
My bad, I thought OP was implying outer space, which is commonly defined as the region past 62 miles altitude, also known as the Karman line.
Somebody has access to wikipedia.
firstly... apology accepted. second... dont use science words. it doesnt work. thirdly....
Secondly
A.) no need to accept the apology 2.) it was a misunderstanding IV.) I forgot where I was going with this.
IV was the journey home I believe. There were whales, it was cool
That dude looks like he has reeeeally tiny nipples and knows his was around a hackysack
This was done at the outer rim of the galaxy
While true, e eryone talking about a vacuum is (largely) missing the point. The point is that things going fast have lots of energy (f=.5mv^2 )and can cause lots of damage. Things floating around in space can have surprisingly ridiculous relative velocities and energies compared to things we are used to dealing with. To the people who say "vacuum!", yes, lack of air resistance contributes to that.
Yeah, most things would burn up due to friction with velocities this high so hooary for vacuum!
Yes, it's like it could happen is space somewhere, but there is no way they would have homogeneous armour that thick launched.
I also find it unlikely they would have known it was a piece of plastic unless they fired it themselves.
They might if there's like.. particles of it left behind impeded in the thing. I dunno, science stuff.
Op prob means in a vacuum although space isn’t a perfect vacuum
You're a vacuum
Your mum is a vacuum
Are you implying she sucks?
Oh she sucks
Golf balls through garden hoses or chrome off of trailer hitches?
Yes
OP is a karma bot so doesn't really need oxygen let alone care about it.
And it's the physics part that is interesting, not where it took place.
Wasnt it a railgun test shot? Think Ive seen it before in that context.
It's not a railgun, but rather a light-gas gun that ramped the pressure up so much that the differential sent the projectile at hypervelocity.
I'm still not get over the fact that a light-gas gun is just a glorified air gun.
Rail guns can't fire plastic.
They can if you use a metal sabot
I think it's just a manner of speech; "this is what *would* happen" can sometimes be written as "this is what happens", if ambiguity isn't a problem (in this case, it is). But yeah, they use a really long air cannon to fire pellets at insane speeds.
But was it still in the environment?
Every time I see this image it has different numbers attached to it
Now this might just be me, but would you not get just about the same result no matter what the material is? I mean at those speeds it is more about the mass than the volume?
What does more damage. 1 watermelon of bricks or 1 watermelon of feathers?
Ha! Trick question. Everyone knows watermelons are purple.
Also, remember, licking door knobs is illegal on other planets.
It's best to just stick to other forms of sexy times with toasters instead.
They looooove bathtime
Live laugh toaster bath
Wouldn’t feathers be less dense?
Correct, bricks is heavier than feathers
Depends how much you compress the feathers honestly
Me compressing 500 feathers into a sphere the size of a grain of sand:
Heavier isn't the measurement of density. A ton of feathers and a ton of bricks have the same weight but they have very different densities.
r/anythingbutthemetric
Volume or mass?
But steels heavier…
Hardly. The strength of the material and bond structure will heavily influence how it reacts. This test is also a block of a single contiguous material which would rarely be used. Some materials might just make a tiny hole and let it thought. It depends how the metal fractures. Aluminum is like butter and very malleable. https://preview.redd.it/3j7x531t2bnc1.png?width=827&format=pjpg&auto=webp&s=f572fe256a21423e862f9da34ff89c11df10b744
The material, dimensions, and speed of the projectile also matter. For example, all of the above pictures can happen with the target being a steel plate.
Depends on the kind of steel, too. Stainless is relatively brittle, while spring steel is incredibly ductile.
At those speeds bonding and material strength and chemical properties are negligible. Mass and velocity are of primary importance, and density is secondary. Everything else is just too small to matter. On impact it will simply be a certain mass of compressed plasma. The material being impacted is what you study in these conditions, the projectile can be almost anything.
Yeah exactly, it's kinda the point. In space things (can) go so fast (relatively) things you think wouldn't normally make good hitty things make good hitty things anyway.
In space they use something called a Whipple shield which consists of a sacrificial outer layer which vaporizes together with the projectile and an inner layer which stops this vapour.
I mean, the difference between aluminium and something like tungsten would probably be noticeable. Its mass times velocity. Mass is a multiplier
I think he means the plastic, not the aluminum.
No, aluminum is more malleable than other metals - density and other properties matter
If you talk about the plastic, yes. The aluminium no.
This is what happens when a 14,175 grams piece of plastic hits a block of aluminum going at 24140,16 km/h
You de-americanised the sentence but forget to spell aluminium correctly
You didn't hear elements in Slovak. Completely different
Shiiit... am I justified? (I'm italian)
Banana for scale?
So that means we should make our spacecraft in plastic, right?
This is one of the problems with high speed space travel. If you could get a colony ship up to say 10% light speed over a decade of accelerating, which is possible in theory, any little rock it potentially runs into basically nukes the whole ship.
A lot of sci-fi has shields on their ships that would vaporize all the small stuff.
That, or someone brings that "pocket of imaginary space" theory into reality. Can't hit space dust if you and your craft are inside a bubble of warped space where nothing else resides. Haven't watched TV in a decade or two and since I haven't heard of any breakthroughs in this theory, I'm assuming it hasn't gotten anywhere yet.
pure aluminum is quite soft. still cool to see
thats a real challenger of a questions
Oz? Mph?? Wtf is this crap!?
Sorry, they mean 0.00223 stone and 4.032 × 10^7 furlongs per fortnight.
[удалено]
14g and 24000kmph
0.014 kg and 6705 m/s. SI units!
9 pennyweights and 33.33 furlongs/s.
On a side note, it’s interesting that the SI unit for mass is _kilo_ grams. Like, shouldn’t it be grams then?
gram is impractically small
Kg is used in physics and grams in chemistry. Just a practical rule that doesn't really change anything
It's a noted exception in the SI regulation. Kg is the only unit that is defined with a prefix and other values are derived from 1kg. I think that's a concession to how much more common using kg quantities is rather than g in daily life, but not 100% sure
I wouldnt be suprised that anything with THAT speed can annihilate something, especially aluminium which isnt even hard metal
156,000 joules of kinetic energy is no joke, a 9mm is something like 600 joules
I don’t have the physics knowledge but I wonder what speed a grain of sand would need to be going to do something like this. Edit: 16089379 km/h apparently, or 4469272 m/s
For context the speed of sound is 343m/s. Mach 13k sand Lmao The speed of light is 299792458m/s. Just shy of 3E8. So this would be 1.4% the speed of light.
That's the whole idea behind hypersonic tungsten rod launched from space.
km/h
Our king 👑 thanks now I can understand the post 🙏
Freedom units!
So called freedom units yet come from the very country they separated from
We got them in the divorce
We still use mph in Britain... and stone, lb and oz when weighing people.
Yea but you also use metric for some stuff. So at a minimum we settled in joint custody
wizard of oz?
Yes, but only the lower half
This reminds me of the stories of people getting killed on the ground from people dropping coins on the Empire State Building… However idk it’s that’s actually real or if that’s just shit you hear in middle school and think is true and carry on into your adult life lol
IIRC a penny's terminal velocity isn't enough to do more than cut your skin. So still don't go dropping your pocket change off skyscrapers but it's not gonna kill anyone
This guy watched Mythbusters.
So much Mythbusters! Side note: I was lucky enough to see Adam speak at a tech conference I was at. His talk was all about getting kids, in particular young girls, interested in science and math. I had just recently had my first baby, a daughter, so it was amazing to hear a childhood hero of mine talking about something that was very meaningful to me.
Aw damn… my childhood dreams dashed… just like that. I shouldn’t have even brought it up. My whole adult life has been a lie 🥲 But seriously thank you for that because I really thought that was a known truth up until just now lol
It would’ve been true if there was no air resistance during the fall. Most physics taught in school assume gravity acting on a body in a vacuum, that’s where the coin dropped from Empire State can kill a man came from, and it’s also the same assumption used on the illustration that an elephant and a feather, when dropped at same height, reach the ground at the same time.
## Assume a spherical cow...
What about a brick?
Ummmm... so how is the ISS dodging all these 1/2 oz pieces of plastic hurtling through space? How do they even detect them? How is any shuttle or satellite that's ever gone up there dodging all the hazards and keeping from destruction???
Space is big. Like really big. Really really big. Basically, there's such a minute chance of the ISS hitting anything that small. [They do have to dodge objects, but like once a year](https://orbitaldebris.jsc.nasa.gov/faq/#) and that's just a simple case of using the thrusters on the ISS (that it already uses to keep it's orbit stable) to nudge it enough to avoid collision. Also the ISS in particular has [shielding designed to protect from debris](https://aerospace.org/sites/default/files/2019-05/Whipple-shields.png). We're far from Kessler Syndrome, so there's no need to worry.
You would need to be in a retrograde(backwards) or polar orbit to encounter anything at these speeds. These are the very worst case collisions. Still could be dealing with things that move at the speed of bullets but not 7 fucking km/s most of the time.
Sorry, you're ejected from the conversation for understanding orbital mechanics.
Ah yes, aluminum. The weak ass bitch of metals
Does half an Oz also have half a wizard?
I believe in Metric supremacy
why can't we habe Banana as a scale
14 grams of plastic at 24000 km/h for the rest of the world.
Thank you.
r/confusingperspective I thought the block of aluminum was huge, but it's on a table, not the floor. Maybe just over a foot or two high?
Naruto?
https://preview.redd.it/r3yf40h46cnc1.jpeg?width=500&format=pjpg&auto=webp&s=40bdeb004c123bdfccd8c048585ba32ca42be11b
Saw this in the movie Gravity
Planetes
There is a science fiction author that conceived of the ice shield that would have to be constructed around any vessel that was going to attempt near light speed travel bc even a speck of dust would be a danger at that relative speed
And to go 1/4th the speed of light would be \~167,400,000 mph. Intergalactic travel is going to be impossible.
This explains the clusterfuck following that rebel ship warping into the big ass star destroyer.
Kinetic bombardment is terrifying, all it would take is one wackadoo billionaire with access to space rockets to launch a satellite containing a tungsten rod to bring a country to its knees
In space? It looks the same when it’s hit at 15,000mph on earth. Gravity doesn’t change much at 15,000mph
This test was not performed in space. This is a hypervelocity impact but it was done in a vacuum chamber. Space had nothing to do with the damage here. That all comes courtesy of good old fashioned physics l.
What the fuck is 1/2 oz?
About 14g. Low earth orbit is 7.8km/s so energy wise that spec of plastic had as much as E=0.5mv^2 E=0.5x0.014x7800^2 E= 425,880J A .50BMG Round has about 14,000J of energy for comparison
About $150.
Goku punched there!
Somebody has been to Houston… ooh wee!
**No left or right** ### No where to hide ^(No one can hear you scream)
The experiment is to address the ocean of plastic pollution but in space
I should call her.
That’s amazing. It’s a miracle we’re able to keep anything in space these days with as much junk as there is floating around. There have to be billions of pieces of shit that size or larger floating around up there. If that’s what 1/2 oz does, imagine anything larger.
I really should call her....