WrongDonkey
106881
2106
34
Apr 19, 2021 3:57 PM
WrongDonkey
106881
2106
34
PballQhead
Energy is proportional to the square of the velocity!
nevergoingtogiveyouupnevergoingtoletyoudown
Aluminium is a really soft metal, and that's a big piece of plastic. Thats about a solid cubic inch.
coll4242
15,00 mph???
JupKozlowski
jennym123
Velina
15000 not 1500 mph
Jbelkin
So, 8 legos to take out the Death Star?
4vie
If you make 'em go fast enough, yeah!
mastodoff0
This is why spacewalks always terrified me.
knifepartty
15,00mph
simplefishy
F = MA
vietsatillite
Its also kinetic energy, KE=1/2mv^2 the transfer of energy to that slab is what caused the hole
GraemeDynard
Stop posting this fake bullshit.
iusedtodream
xuumo
I mean i dont believe it
AlwaysInTheshadows
This is why I'm convinced space travel is impossible. Unless we figure out wormholes. Or some kind of shield
omh2
The solution to this problem is sitting at the right edge of the picture, called Whipple shielding it's stacks of thin metal sheets with
omh2
gaps between. It breaks up the projectile with each layer spreading the force over a larger and larger area, until each piece no longer has
omh2
enough mass to penetrate further, despite still maintaining most of it's speed. It's used on the ISS and other manned stations
Dadbodbot
so why do they have blocks of aluminium floating around in space, that sounds pretty dangerous in of itself.
secretoaster
What the fuck is a 15,00 mph?
Jacob5fingers
Fifteen-hundred. 1,500
creamyt
15 miles and 0 cents
Snoron
A typo.
lronMaiden
In here that just reads as 15 mph.
Nightsnipers
It was a Walmart bag
MagicOrpheus310
That's what Taco Bell does to my asshole
BernieMittens
Shields up god damnit !!
khazaria
We'll need them soon. the amount of space trash elon is putting out there will trap us all here.
CrazyCatLad
mrtannen
This is what happens when you lose your Bridge Deflector Shield
Wowcablesucks
15 MPH or 15,000 MPH, I am confused ?♂️?
Megamastermetamememaker
15000
Wowcablesucks
Thanks
BiologicallyHazardousMaterial
Looked it up, just under 15000 mph
MomofukuJones
Looks like Lego is just as dangerous in space as it is here on Earth
danyelmo
One of the reasons why you can't leave your aluminium in space.
seyne
One of the biggest holes in most sci-fi is that any ship usable for fast long-distance travel is also a WMD if you just point it at a planet
AninOnin
That's why I flipped out when they did it in Star Wars. I'd always thought "what if", but then they actually did it and it was amazing.
x68K
Not really a hole. The Moon Is a Harsh Mistress, Gundam, Mass Effect, Halo etc. all have kinetic orbital strikes. It was a trope in the 60s.
questionableanswers
The Expanse also has a book that deals with orbital strikes
AlwaysInTheshadows
I liked this concept in G.I. Joe Retaliation. Just take a large chuck of tungsten and drop it from a satellite.
Filanwizard
the difference is that would not be that destructive IRL, it looked based on Project Thor. not WMD more like bunker buster.
GooseNipples8
AKA Rods from God
SuperSaiyanYamcha
“That means, Sir Isacc Newton is the deadliest son-of-a-bitch in space!” Love that quote in Mass Effect.
subduedreader
And the guys being lectured run a couple of hard sci-fi websites.
ZebAsiz
SAFireStorm
Let's be honest, those slugs are the least of Earth's concerns.
ZebAsiz
3rdoption
What if it was covered with bedliner? Seriously, has anyone tested it as protection for space vehicles? It can withstand explosives.
GondwanaCraton
Water would get trapped under the bed liner and over time will rust the aluminum.
ihavethelowground
How would it react in a vacuum and at extreme temperatures? Not to mention it would add significant weight
rrlyrae
https://en.wikipedia.org/wiki/Whipple_shield
Dustingineer
KE=1/2mv^2, where KE=kinetic energy, m=mass, and v=velocity. KE dissipated via plastic deformation of Al block.
lurkmoarjono
hazarding a guess, bedliner is good for its elasticity, not its ablation. Concussive forces and kinetic forces are different. merits there.
pobbitSbreaker
The Pentagon, sprayed the whole outside of the building with bed liner to make it more resistant to grenades and explosives like 15 years go
DobermanTech
If you are serious, Google supersonic impacts and do some reading. I'm not smart enough to explain why not. I can only say "hahahahaha no."
3rdoption
Will do. Thanks.
NCPBullet
Isn't every impact in space super sonic?
SAFireStorm
No, because in space there is no air so sound can't travel in it!
DobermanTech
The vacuum isn't particularly relevant, other then making those speeds sustainable. The speed of sound through the target and the projectile
DobermanTech
are still relevant. Speed of sound through aluminum is 8-18x STP air (different speeds depending on metal grain direction).
DobermanTech
It was supersonic as far as the metal was concerned.
Gaidenninjacat
No, but everyone you are going to want to absolutely avoid, yes.
NCPBullet
I'm pretty sure since soubd doesn't travel in vacuum all velocities are faster than sound.
DobermanTech
Yes, you win. I was merely trying to point out where to learn that stuff gets to a new level of destructive when going especially fast.
Gaidenninjacat
If you want to be that technical, an object has to be a sound source to be super sonic. It can't be one in space so nothing is super sonic.
LicensedAdHominem
Funnily enough, a cardboard box covered with bedliner would provide much, much better protection per unit of mass. Projectiles break on ⤵
LicensedAdHominem
⤷ the first impact, so the next wall suffers multiple smaller and slower impacts. At a certain number of boxes all debris will be stopped ⤵
LicensedAdHominem
⤷ and despite the space used you won't even approach the mass of aluminum, which is the most important metric in, you know, space.
theAught
Ah yes but what about the catches on fire quotient?
LicensedAdHominem
No air ¯\_(ツ)_/¯
Armaunia
Once you reach ~1100 miles per second we have another problem. The object is now moving faster than the the force keeping atoms apart 1/2
Armaunia
can overcome, meaning the atoms on the leading face of the object can now collide and fuse with atoms in front of it. Kaboom! 2/2
rustybronco
Good idea but orbital velocities are mind boggling. The fastest muzzle velocity publicly available is 1,422 m/s, average orbital's 17,000mph
OOAKIapparel
1422 m/s = 3180(,9) mph
Krell356
Ewww, measuring in two different systems at once. Measure it in bananas per minute like the rest of us.
rustybronco
Yeah I agree but 140 characters ?
GondwanaCraton
I hate to shoot down your figures, but 1,422 miles per second is ~305 times faster than 17,000 miles per hour.
slack3rdav3
m/s = meters per second
GondwanaCraton
Don't white knight the guy who mixed their units of measurement when they get mocked for doing so.
rustybronco
Yeah sorry I meant meters per second vs miles per hour, problem with being limited to 140 characters.
slack3rdav3
I was simply clarifying :)
Spacepizza125
How big is that piece of aluminum? Need banana scale.
pinegag
About 4
Babycl0wn
treefiddy
redpandabanana
Carl99
Big, there's a photo out there of a block hit by somthing a lot slower and lighter and it left a 30cm wide 10cm deep crater.
DonutThief
Unfortunately this is fake.
sordatos
jakisall
Ba na na.
Snadethebeast
Not a banana but still good comparison.
Spacepizza125
Thanks!
maincarrot
I always see goatsee
ButtholeFlower
WrongDonkey
It's hard to unsee that.
CaptainLachnload
Now I can't unsee it. My childhood memories of the early internet are returning D=
JaimeLannistersRightHand
See I thought that crater was the size of a Dwayne Johnson
nutikka
I estimate it would reguire roughly 100 grams to make a crater the size of one to 1.5 Dwayne Johnsons.
sordatos
I'm not sure is the same crater now that I think about it
dyxj
I believe it is, but am not 100% certain.
DrSparken
This one is full penetration, OP is not (though likely significant spalling)
Catpeeker
Without a banana could that not be the hand of a giant?
Hungrypiemonger
The real question is why use shitty aluminum as a basis of protection against speeding bullets?
ThisIsNotCoo1
Space is hard. Heavy is far more expensive to get there.
Burke616
Aluminum plates are light enough to haul a pile of them into orbit. Heavy armor is, well, heavy.
billbobagsh0t350
And also need to see what would happen if a banana hit it at that speed...
AJ2071
Probably worse because the banana would be frozen solid..
Spacepizza125
Now you're asking the REAL questions.
UKMonkey
You put.... You put your dick in it?
UneventfulLover
I need to see how t f you get a banana up to 24000 km/h... Probably the same way they get a piece of plastic that fast, but I want to see.
technicalfool
I guess you could get 2U worth of banana going at about that speed for maybe $30K, not including camera to send the meme back to Earth.
UneventfulLover
I thought it could be done on earth, tbh. I can't afford that unfortunately.
nik282000
The cannon needed to get it up to speed would be way too long on earth. A banana can't handle much acceleration.
TheNax
I never knew I wanted to know that, Until now
Elgirav87
For science and such...
jiynxed
About the size of a D20
XuncuTheTiger
Addendum: one that a usual DM would allow?
Spacepizza125
So about 15mm the.
jiynxed
Ish
XuncuTheTiger
You seem like the one to ask: is there a DnD spell that either directly or can be bootlegged into "Railgun"?
Puppetmeatpudding
Just get a long line of peasants..
jiynxed
Most DMs wouldn't allow it. Too shenanigans for play. Also wildly impractical because to achieve any respectable velocity you need roughly
jiynxed
6000 peasants. Assuming you need this to do significant damage you need to be hitting 5,000fps minimum.
jiynxed
I mean, kinda? Xanathar's spell called catapult - launches an object at speed. My wizard would use it to fire bundles of dynamite at things.
jiynxed
Impact damage plus explosive. Otherwise you're on the peasant railgun experiment which few DMs would allow because shenanigans.
bigmuffin1
For those in the US 14g is about 1/2 an Ounce.
Cthulhunow
Haha stupid americans
FukcTedCruz
Thats like calling someone stupide for not speaking "X" language when their country/area only speaks "Y" language
Atomsk
Or 14 wet eagle feathers.
SirBobby98121
About the weight of three US quarters.
rbudrick
We know and use grams, liters, meters, but less so kilometers. It's celsius that fucks us up. People forget US is dual system.
izzatme
Everyone in America can do weed math Bub....
thetruthisinmybutthole
we know we smoke weed
DanCutter
1. We measure our illicit drugs in grams. 2. The GBBS taught me how to bake, and my recipes are metric. 3. Suck my eagle.
amc21101
Bald eagle feather
UnstableProductions
Let them learn normal units.
GandalfsBeard01
But . . Americans use grams too . . Just look at the back of any food packaging. Or the scale your drug dealer uses. We all know half an O.
Aimlockbelch
So glad I’m a science nut. I’m American, but think in metric. SOOO MUCH EASIER!!
minibois
Or about 1/32nd of the weight of a football
UncleSlam123
I buy enough weed to know the conversion
originfoomanchu1
No for the US 14 grams is about the size of a canary. ;)
UpsideDownBranana
Or the size of a hot wheels car. Or 1/4 of a hot dog
FMswottingTottington
Or 1/10 of a dual pronged pool que
TaintToucher
How many washing machines per hour as that?
dank69
0.125 of a 0.25lb hamburger (precooked weight, may contain beef)
ThePunishersVengefulBrother
Those of us old-school pot smokers were well aware of this particular conversion.
ianpatterson710365
All the Americans who smoke pot just not saying anything
tacotuesday5000
We know what grams are thanks to pot
Ladderguy
And what kind of bullets goes to standard pistols?
CmfMttnPpl
Or between 2 and $500 depending what ur looking for.
arthurvanhoudt
And 24.000 km/h is about 15,000 mph!!
poorwhitetrash
How many washing machines is that?
FurtiveGlancer
But how many washing machines is that??
busterfixxitt
It's exactly half an ounce. 1 oz = 28g
LicensedAdHominem
It's most likely *defined* as half an ounce by the experiment, then someone converted that to normal units.
bigmuffin1
its like .49
MichaelJordan45
It’s 28.35 grams
FoamingToad
Technically correct, best kind of correct. +1
Kagenical
All this time my fucking drug dealers been ripping me off for .3 grams
ThePunnyGuy
Oh, I know what half an ounce is.
LargePoutine
I zee what you did there.
kenewe10zgunaskor
See you tomorrow.
ihopedforbetter
I laughed and thought well drugs did teach me conversions so there is that
Totallyscrewedinaustin
Can confirm
beardedwolfedude
bonerpatroller007
A chef I worked with would quiz people on conversions in interviews (ie. How many cups in a gallon, teaspoons in a quarter cup, etc) 1/?
bonerpatroller007
If they didn't know, they'd get flustered, and then he'd ask them how many grams in an ounce. They'd get super excited to finally know 2/?
bonerpatroller007
One, and blurt out "28.2!". He'd just smirk, say "druggy", and continue the interview. Always funny
WhoToldYouLifeWasFair
About $100
YourMemeSucksHarderThanaDyson
Jesus Christ... $100 I wouldn't pay that for half an ounce and I buy mostly from over priced rec shops..
thevortexmaster
Dang. If I paid for it that would be around an ounce or more here
urbanfire
Only insulin is this expensive.
Wubbalubbadubdubb101
My fellow American
SomeScienceGuy
You must not live somewhere that it’s legal (or quasi-legal)
WhoToldYouLifeWasFair
Nope. And it's been a very long time since I was a purchaser. (Around 1975)
ThePunnyGuy
Little more expensive for me.
bigthoughtshappen
As someone who lives in a legal state. Growers without licenses undercut the market. $100 an OZ for me.
SomeScienceGuy
I said that the wrong way, meant the opposite lol
AnticlockwiseMetamorphosis
I can get an oz for $45. Your country scares me.
BuBBaJoes
Yah for mids hwads will be 300 an oz. Source. I smoke a lot and no its not legal in Ohio yet
BuBBaJoes
Heads* sorry
YourMemeSucksHarderThanaDyson
Your dealer's are going to hate legalization.. I remember $300 ounces. Now top shelf probably cost that much at a rec shop. Street is like /
YourMemeSucksHarderThanaDyson
40-50% cheaper.
flyashy
One of the reasons why I loved the Expanse series, their usage of ballistic weapons in space!
UncleAIex
You should look into battlestar next
AlkeneThiol
1) Railguns are standard faire in contemporary military scifi literature. The idea that a single ship with railguns can effectively destroy
AlkeneThiol
2) or conquer an entire planet without defenses has permeated the mil scifi zeitgeist. And it is terrifyingly true. Orbital bombardment is
AlkeneThiol
3) one of the scariest future threats.
SaFalken
Literally watching it now
freezingpilot
Yeah, All I think about watching the expanse battles is "Someone, somewhere, sometime, is gonna catch a stray PDC shell..."
GondwanaCraton
Niven was good about that also. Dropping a cloud of ball bearings or iron filings behind you to fuck up pursuers, etc.
Fuckimgurcunts
In the Revelation Space series, during a chase one ship released parachutes 1 atom thick that the pursuers had to dodge
PimpinKen
Photon torpedoes from star trek were actual ballistics
thebinarybandit
Weirdly enough, there is a Star Trek ENT episode called ‘The Expanse’ where they used ‘photonic’ torpedoes, an upgrade of ‘spatial’ torpedos
freezingpilot
https://www.youtube.com/watch?v=4tIk-vUtLBs
mysticwerebadger
Putting a ship into a spin to maximize PDC coverage was a mind blowing moment to me.
4vie
And as the gif provided below, it also looks real cool
The701
Anakin was right. It IS a good trick.
The701
mysticwerebadger
That's the exact scene that came to mind.
Nintura1182
PDC?
Akaszkronos
Point Defense Cannon. Brrrrt but in space.
CrazyCatLad
But, (naval) ships have always turned/maneuvered to maximize firepower via broadsides so its not exactly revolutionary. Just more axis.
FunkyWombat
Wouldn’t anything spinning technically be “revolutionary?”
mysticwerebadger
A+
maskedrabbit
MlSSlNGN0
kONthePLACE
Dad get out!
maskedrabbit
The tactic itself isnt revolutionary, but depicting space combat realistically is uncommon. Often its treated like a 2d naval battle.
CrazyCatLad
Ah gotcha. I feel like space combat in Expanse was good but definitely very close quarters with how massive space is. That said, we have no>
CrazyCatLad
>> actual documented space battles to choose from and I prefer to see shit blow apart.
flyashy
Jack Campbell's Lost fleet seies depicts space battles with absolute brilliant realism not just in direction & distance but also in time.
russiandollsarejustsofullofthemselves
In the books they regularly talk about thousands of kilometers distance during battles, but they consider that "close" quarters, relatively.
Filanwizard
because it looks better on screen, also why TV and Film scifi always does combat at visual range.
Filanwizard
space ships firing at sensor returns at light second ranges is just a submarine movie in space.
FelixG
With the weapons in the expanse you have to fight at close range, non-missile sublight weapons can be dodged more easily at greater ranges.