Can You Create Artificial Gravity? | Earth Science
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- Опубликовано: 26 апр 2017
- Floating around in the zero gravity space might sound fun, but it makes doing much of anything hard. Artificial gravity would help us settle space, but can it be done? Earth Science explains.
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No cats were harmed in the making of this video.
Probably
I assure you Ben Dover, he wasn't harmed...I even gave him a Felix Twist and a back rub afterwards. (Other cat treats are available) :)
Paavan Merbay i was expecting a comment like this one. Classic!
Humor in this video was written by an AI.
They don't have James May anymore :(
I liked it
@@theboios0892 yeah, cause you're an NPC..
@@billdavis9286 nice.
Disgusting
1:49
What is it with "science" channels and not using SI units? xd
america.
pinquinsam *Channel name:BBC Earth Lab*
*you:"America"*
Xenro66 ikr it messy km/s^2 ( s ( squared ) = Newton N , done much easier -_-
Xenro66 It is due to the fact that SI units is more relatable. If i said you punch with a 1000 newtons of force most people couldn't tell how strong that is. measurements with km and such are relatable to everyday measurements thats why they use it.
accually its the metric system is only less relatable to the british and americans.1 newton is in 1 kg/force everybody should know that. stuff like miles, pounds, feet, should not be used for its inconsistency.
What a waste of watermelon...
where a ping pong or tennis ball could do the job right.
Meanwhile people are dying of hunger in Africa.
When I was a teenager back in the 80s, I though we would have anti gravity and artificial gravity by now...
Sad. 😩
There is centrifugal force which happens in a Stanford torus which we could create
10 years ago when I did my engineering degree one of the first things they told us what they do not know what gravity is.they can tell us all about it they can work with it they can use it but they can't actually tell you what it is. There can be no gravity machines until they finally work that particular problem out.and as a side issue exactly the same thing applies to electricity.I can tell you how it works, I can tell you how to make, it I can tell you how to control it, but I can't tell you actually what is this
Well, two years late.. (technically the experiment started 3 years ago). The ESA concluded a 3 year experiment with superconductors to create artificial gravity fields.
www.technovelgy.com/ct/Science-Fiction-News.asp?NewsNum=579
Dont worry ! Will get one!
@@like90210
I heard that Einstein actually believed that we can shield gravity.
Imagine gravity shield paint!
So, "no". Got it.
Ahh the pursuit of artificial gravity is a daunting task. Don't let it get you down.
1. Invent time travel
2. Ask future humans if they have any ideas
i'v got a dumb question ....!!!
What if we build a big gravitational machine big enough
That can bend light
Can we teleport from it??
Or it effects the earth gravitational
What if we put that machine
A lot more deep down from the highest mountains
In artic or somwhere like everest....
Things really get starts
(Gravity works as mass calculated as "g")
Higher the mass it faster hits the ground
With higher speed means higher "g"s
So what if we tried to push something from top of the Mountain
Straight
To down wards where gravity machine is being place which pulls object's like earth does
So basically the falling objects is getting pulled by earth's gravity and our machine at the same time
With double the speed
To achieve the speed of light
( teleport)
basically i`m not a sciene student
so excuse me
i"m wrong
First thing first, the force of gravity is calculated by the equation Fg = (Gm1m2) / r^2, where G is a constant 6.67x10e-11. The one you have is just the weight in Newtons, W = mg. With that in mind, you cannot just simply *multiply* gravitational force. Bending light is out of the context as that is basically impossible outside of a lab (your basically talking about black holes), there have been experiments regarding this but none came to fruition yet.
So like a jet heading towards the ground?
No, it will not create a portal,
No light bending,
The pilot would feel lot of g force, and it's dangerous.
And it's impossible to get to light speed, you can bend the space to travel at light speed in THEORY, like the warp drive, but it's not that easy as it sounds.
3:32 I wasn't looking at the screen and I thought my cat was meowing lol
Good information. Ty for producing
While magnets can definitely help with walking around the inside or outside of a space ship, it's not even close to a replacement for gravity. See, when a normal force (like gravity, or centrifugal force) acts on something, it will distribute the acceleration pretty evenly across the object. Although magnets can create a very strong force on something, it's more like sticking something to a wall in zero g. If you put magnets in your boots, for example, your feet will easily stick to the floor. But the rest of your body will still remain in zero g, especially if you're standing still.
Very nice explanation. Thank you
The "jokes" make this very difficult to watch.
I'm doing a similar project on mass lol, but mainly an air resistance project!
Great presentation.
Thank you for useful content and I like humor here.
Could use those centrifugal rings for sleeping quarters instead, what with your head and feet on the same level relative to one another. Wouldn't need to be as big, and you could even make it spin at 2 Gs.
First of all a few misconceptions here. Gravity is not a "force" and it does not "pull". A massive object (earth) bends the natural geodesic lines of space-time more near itself, than further. This creates what is known as a tidal effect. The bottom of the melon, feels a greater tidal effect because it is nearer to earth than the top side of the melon. This differential in tidal forces, causes the melon to follow the natural flow of space-time, hence accelerating towards the earth. In the case of the earth - melon system, the geodesic tides are not nearly strong enough, nor is the melon big enough for it to feel different g's on the bottom and on the top side (these differential in g's does exist but it is so small that the electromagnetic forces holding the melon together as an object keep it intact) but in the case of 2 big planetary bodies, the story is different. The moon does "feel" different g's on each of its sides because of its large diameter. If the moon was orbiting even closer to earth, the differential would be even greater, to the extent that the electromagnetic forces that hold the moon's molecules together, would not be strong enough to keep it intact (but the moon would need to be orbiting very close for this phenomena to happen). If you were to stand on top of a very small black hole (say 1 meter in diameter), the geodesic of space-time would be much more bent on your feet than on your head, causing you to feel the tidal effect with extreme consequences. Please use SI units in the video
Roxas99Yami thanks for the explanation mate
yeah i think it get it .. so my idea of putting a black hole under the deck likely wouldn't work.. darn. I keep thinking gravity must have some sort of particles causing the effect and if we could isolate the particles, figure out how they work possibly we could produce gravity at will and for lack of words explain it as pulling in a different way.. or as someone was trying to say fall in a different direction.. Sometimes I really regret not going into physics, don't knkow why but gravity is facinating and somehow I think we are missing something realy simple and basic in how it works
Yes. There is much that traditional science is missing. The true explanations are much simpler.
Imagine doing weight lifting in a room that’s 5 or 7 times earth’s gravity!
Humans could get so much stronger. Stronger bones. Denser bones. Public access. You use it for 2 hours a day or 3 hours a day.
Just like Dragon Ball ☺️
I want that type of gym.
Just buy some led and shape it into many rings, then put those rings onto your wrists and ankles, fill some big cola plastic bottles with sand and put them into a backpack, then train ON actual sand so it takes more energy for you to move fast. Yeah its not a gravity chamber but weighed clothing is the best we can currently do... if piccolo doesn't need one, neither do you.
Thanks 👍, can you show Gravity experiment in 0 G , like putting one heavy and one light object and see their behaviour
Sir what if we use metallic shoes and magnetic field is Ower as equal to 1 g force that can feel nice in space craft and we can design thing like that other problem may work up like that please reply I am thinking about this plan too much
How do you define rotation? Like speed, doesn't it only happen _relative_ to other objects?
1:40 - seriously guys you need to get this right if you are a science channel.
The gravity of the earth does not pull objects towards its surface!
The objects and the earth both exert a gravitational pull on each other - however due to the different in mass the small object has a lower inertia and therefore moves more towards the earth more than the earth moves towards the object.
Most of the humour was pretty mediocre, and the joke density was annoyingly high. Not every single point you make has to have a gag in it.
Well everything the BBC produces is a joke
Nice video
"Astronauts still float around like complete chumps!" 😅🤭😆🤣
Really enjoyed your video, cheers 👍😊
0:49 since when did watermelons taste so bad?
Zachary Wilson it seems that became sugary...
Is there a possible way to have a room (on earth) where you weigh more than you normally do.
I'm thinking of having a room for physical training.
Sure. Erect a track on earth at a 45° angle with respect to a point 1km away. Run the track around that point in a circle. Put a room on train wheels. Increase the speed of the train/room so the centrifugal force is equivalent to 1g. Now inside the car you experience 2g. As he said, it would have to be a bullet train at 225mph to get a 1g force that would add to the already existing 1g from earth gravity.
How about vibration waves, or warp drive, bending light or electromagnetism
I want to ask that centrifugal force is the opposite force of centripetal force but here the work is done by centrifugal so what is about centripetal force??? what centripetal force do here??
personally I think artificial gravity will come by the way of super magnets. the only problem is the amount of energy required to do that is crazy so we have a long way to go
Looks good!
No watermelons hurted while making this video
What I've been trying to figure out is what would happen if you were accelerating AND spinning at the same time.
Taylor Gibson you'll experience something like a varying gravity (it's actually acceleration of course, not gravity, but feels like it).
The acceleration you experience will be: a = k + r*sin(t) ; where a is acceleration you experience, K is your linear acceleration, r is your radial acceleration's magnitude. t is the (instantaneous) angle of rotation
That sounds like you're spinning in line with the direction you're going. I'm thinking about spinning around the center of the ship going in one direction, so you're being pushed toward the back of the ship by acceleration but also being pushed outward to all sides of the ship by cetrifugal force.
Depends on how many drinks you've had....
What about magnets in the ships floor pulling on a magnetically attracted full body suit? I dunno what is any material or composite would be light and comfortable enough to wear but still be capable of being attracted to magnets
Centrifugal will only work when there is some inward force aka tension in rope or string...but in space,there is will be no tension in rope so how much u rotate there still be no inward force....
I love it . Your technical ..then you dumb it down with a pail of water...
You don't even realize you solved hollow earth...
I've no idea how wrong I am, I expect a lot... but if gravitons are the carrier particles of gravity (I said... IF) are the completely innate to mass as a property to mass or could we harness them and produce graviton arrays that force the effect of gravity to objects over them, thus having gravity? (be gentle in your reply)
seePyou all force carrier particles are virtual particles. They've never been isolated (AFAIK).
For example, photons are carriers of electromagnetic force, but shooting a photon beam (a torch) doesn't attract/repel the other object with electromagnetic force
if you could develop a gravity amplifier or neutraliser then infinite speeds in space become possible..All you would have to do is amplify mars gravity and possibly at the same time neutralize the Earths Gravity .If you wish to change direction you just lock on to another passing planet's gravity to pull you in a curve. Is there's any theoretical maximum speed you could achieve? Who knows
Exactly, knowing how to create gravity isn't the issue, we know that matter warps spacetime and causes gravity, but once we can understand WHY matter warps spacetime we could use this knowledge to potentially amplify these warping effects. An implication of this is taking a tennis ball, use our full understanding of how matter and spacetime are related, and amplify the tennis ball's gravitational effects exponentially. Something like this would make interstellar travel a cake walk
Have a look at the alcubierre metric for a gravitationnal drive. He design it in harmony with Einstein. It would require negative energy, wich might not exist, but next years confirmation or not of antigravity property of antimatter might render such a metric really possible! Might want to add that to your video
Check out the NASA flashback project. It opens up larger in space. Try putting the same mechanism on so it can open up bigger to increase gravity so speed decreases and allows life on it with out any weird affects
So funny and informative.
3:37 source?
So I wonder how much lighter you would feel standing on the equator (as opposed to the pole) due to rotational momentum or "centrifugal force"...
About 03.%. High-school level of maths and physics ;-). People mostly think the effect would me much larger, not realising how slowly the Earth is spinning - the small hand on your watch is actually moving twice as fast! What produces any measurable result in the case of the Earth is the huge radius.
please can you do a video on jetlag?
Interesting, will def look into it! Thanks for watching!
oo yeah that is interesting, sleep cycles, brain chemistry
What about air and water to be used for gravity ? One ring would push air that pushes water . I think water being pushed correctly would be a better use .
We dont actually need to wait till we are able to build a ginormous 2KM diameter ring. See for example the Fire Baton NEP concept (based on modern SSR research), almost same span with the ISS main truss, gravity gradient: 1.78% per meter.
What about altering the body's electromagnetic field in order to produce artificial gravity in space? Rather than the spacecraft.
So strapping on a magnetic suit and walking om a magnet is'nt going to work, have they tryed it out in space?
to make gravity we need to make a ball that moves very fast on the outside and very slow on the inside, the speed something falls is because of the speed outside of the ball moving and the speed the inside has been geared to move
What if we use high density matter such as neutron star material?
5:48 can this be done with a cube with no walls? Only the base and a way of being able to spin it. Just curious
You need a wall for the centrifugal force to act against. If you were talking about holding water over your head with a flat surface, i dont want to answer that. Either way, you need at least one wall for solids and probably three walls for liquids (3 provided you start with just the amount that can stand on the flat surface) any amount of liquid that you want to try and swing that you start with just a one sided object that doesnt have an encloser for the liquid.... Well you didnt have much liquid to start with, and you ended with even less.
How big would an object have to be to have its own gravity’s you can stand on it without falling off when upside down nice video though cheers
Whats the atom counter for?
Hmm no explanation as to why the magnetism idea was even considered? Very strong magnetic fields tend to levitate organic matter. Why's that? That's because organic matter generally consists of a lot of water and water is diamagnetic, which means it is weakly repelled by a magnetic field. Key word here being weakly. Which is why you need a very strong magnetic field to notice the effect. Also notice that while the magnet would repel the water inside you, there's some iron in your bloodstream which would be attracted toward the magnet. So your blood flow might get seriously hampered by it. Hmm that's without taking into account all the positively charged sodium, potassium and calcium ions in your muscles and nerves. They too would respond to an external magnetic field.
a strong magnetic field would not have any affect on your bloodstream. The iron in your blood is not the same as iron that is ferromagnetic
What about super compressed radon? Its atomic mass is 222 and if you could compress a lot of it in one space it could have its own gravity. It is one of the heaviest gases out there allowing for liquid radon, if you compress it then it could actually attract objects to it. Although... it is very radioactive.
You would need about 150 trillion kilograms of mass, even if it was one meter away from you.
Neat.
Radon's most stable isotope also only has a half-life of 3.8 days, is an alpha emitter, and while that is not a danger so long as it's outside of the body, it will quickly irradiate its container. Some of its decay products are also beta emitters, which pose a much higher risk.
And yeah, kinda a big problem needing the mass of the earth in radon, even if you could somehow "stablise" an isotope, I think you'd need to mine more than a few solar systems to amass enough...
Super neat! Thanks for the info.
The trick is not to explain gravity. That will come. Once we understand how motion works.
I mean what is the effect of gravity that we see. A suspended object at rest has potential energy. Once released to drop to the ground the potential energy is converted into kinetic energy. Which is converted to heat energy when the motion stops, a.k.a. it hits the ground, which is radiated out. So no energy is created - That's impossible. It's simply a series of conversions from one type of energy to the next - Probably driven by the rules around entropy.
The trick is to understand the step that converts potential energy to kinetic energy completely.
The humours were so bad that it made me laugh
Do you have any metric in this science video?
Metric, any one ?
yes, _please_
I feel ya, him saying 22 mph for Earth's gravity totally confuses me since from my grade school years we always use 9.8 m/s^2...
You don't produce gravity! Gravity just is!
Why not use propelled air like in a wind tunnel. you probably couldn't work in that environment but you could exercise!
Actually one must also add the possibility of rotating upon an axis as a Planetary Body ("Dyson Sphere.") Given sufficient mass in orbit around say the Moon or the Earth or even the Sun (between Mars and Jupiter) and a human made Planetary Body cannot be ruled out as "un-possible" and at the moment at least (Year 2021) one could argue as suddenly a probability. This would matter first and foremost as some type of shielding from the enormous radiation emanating from the Sun but secondarily would be the creation of well, at a minimum artificial gravity.
224 mph may seem fast. but the international space is travelling around earth at 17 400 mph, and the earth is spinning at roughly 1000 mph. so is 224 mph really all that fast in space?
The _Dawn_ probe, first human-made visitor to Vesta and Ceres, could go from zero to 224 miles per hour in a little less than four days.
That's quick enough for spinning a cabin on a tether up to full gravity. All it used was electricity and a few ounces of xenon.
that kinda magnet could probably pull the iron out of your blood...
Why not have a magnet strapped to the front of the space ship atleast 10 feet out. And when you want to accelerate turn on the Magnetic force.
The real force that people mistake for centrifugal force is called centripetal force. It's kinda confusing since it's actually the force towards the middle of a rotation but it makes sense if you look at a diagram.
XxBanziixX1 centrepetal force is different from centrefugal force. They are opposite in direction. The centrefugal force is required when you view from the reference frame of the person spinning since it is not an inertial reference frame an extra force is required to make it so.
that's is exactly what i jist wrote except in a very simplified manner. Also centrifugal force still not a real force just a way to explain what is happening using newton's laws.
different direction, people are not getting mixed up when saying centrifugal force since centrifugal force and centripetal are opposite in diection and from the reference frame of the observer it is a real force otherwise there would be an imbalance of force and not accelerating.
"It's kinda confusing since it's actually the force towards the middle of a rotation" is what I already said. Do read the comment properly before trying to correct someone. Also, centrifugal force represents the same physics as centripetal force. In addition, no it is not a real force. Please do at least a simple google search before exclaiming things incorrectly. "It is important to note that the centrifugal force does not actually exist." Written by the first education site i googled and found in less than 2 minutes. phun.physics.virginia.edu/topics/centrifugal.html
The CORRECT explanation for centrifugal force is (again I already wrote this) just a way to explain what is happening using newton's laws in a rotational motion.
Sorry I haven't conveyed what I am trying to say very well. What I meant to say is that people don't often confuse centripetal force and centrifugal force because most of the time people are actually talking about centrifugal force, since people are experiencing this 'force' from an non inertial reference frame. In the video they meant centrifugal force since they were talking about the perspective of the astronaut who is in a non inertial reference frame. The point I was making about centrifugal force being a force or not is that it depends on the reference frame. This is to do with the equivalence principle. There is no way when viewed from the reference frame of the person moving in a circle to tell whether they are accelerating or there is a force acting on them, I shouldn't have used real in my previous comment. Obviously I concede that centrifugal force is not being caused by any of the fundamental forces but from the perspective of the person accelerating it is impossible to tell whether it is a pseudo-force or a fundamental force. Hopefully that clears it up! We are on the same side I just think I mis-communicated my point. Sorry!
Actually the magnet idea wouldn't work properly to sustain leg strength and orientation anyway. Sure your feet are glued to the floor but you'd be dangling there like seaweed and have to apply force to lift your legs only while being sucked back down every time you take a step. Your legs won't be supporting your weight, only pulling your legs away from the floor.
The real question is whether the term gravity is real and does not serve to manipulate people on Earth, when you threw the watermelon up, it fell down in free fall and not under the influence of the so-called gravity
correction please because gravity is not an attractive force but a dent in space in 3 dimension due to heavier mass, the only way to make it posible is to squeeze an enormous object to small on atomic size causing a small object to have an big density
cringe - Ok constructive stuff tho, would be great if you had gone into more detail about size of rotating ship and the force on your feet vs force on head
or shown a clip of the flying mouse
Can v make the Mars gravity land system for motor wheel drive and respond wrong bcz Earth 🌎 gravity moods is another power mechanism and possible if v make the rover's multiple gravity moods and
1G is a force of 9.8 m/s2 (second square) acceleration, how can you represent it with VELOCITY of 22 mph!
Actually, he is right. A falling object accelerates at 9.8m/s^2 i.e its velocity increases at a rate of 9.8m/s every second. When 9.8m/s is converted to mph, we get approximately 22mph. That is why he said 22mph every second, which is equivalent to 9.8m/s^2
MPH is unit of velocity, not acceleration!
Sam Ba Yup.. But MPH per second, I.e. velocity per second, is acceleration.
Sri Teja Chilakapati but mph/s is not any unit. it should be either ft per sec^2 or miles per hour square.
Sam Ba It is not an actual unit. It is just another way of explaining it better. Like the velocity of a falling object is increased by 22 MPH every second.
...You just made this video as an excuse to break a bunch of perfectly good watermelons, didn't you?
If you create artificial gravity in a zero g environment the ship will be pulled in the direction of the gravity's pull.
What about like metalic threads and magnets. Just magnetic boots with earth like gravity would be good enough
Yes we can ...
We use airplanes in a dive .
What if you created a double layer so the outside layer would constantly spin creating the gravitational force and the inside layer would be stationary and suspended within creating a miniature gravitational field 🤔 maybe if that makes sense
What's a mile?
Faster than a cheetah? ... impossible!
why do we need artificial gravity? we have gravity.
Humans are very stupid...
They can't understand they live inside earth...
I've solved this conundrum...use centrifugal force but instead of walking, have the astronauts cartwheel around or walk on there hands when light headed....
Every object has Gravity. So why make gravity on your own?
Gravity doesn't exist,if you think that gravity is like in anime
Please tell me what would happen if we sticked some magnets on airplane's wings, what would happen?
and what if we combined a less powerful magnetism with a less powerful spin?
When light goes up objects go down. Just like floating dumpster.
c trop bien
ask the aliens that fly about our planet, they dont have spinning circles
forget the ring, scale it down to a spinning platform with arms that reach out several kms. not sure about the maths but I'm sure someone here can figure it out.
oh and we don't necessarily need 1g. just having some gravity would help.
I'm convinced that gravity can be created by making some type of extremely heavy element
Sorry but that doesn't make any sense.
Using mass to create gravity...!?
Only when we understand gravity in all scales we can figure it out if is possible to manipulate it.
@@TrinityLinkq
Let's imagine that super heavy element, that a cubic centimeter weighs 100 tons, what is the utility of the gravity it generates?
What is the practical and technological utility of gravity generated by mass?
Very different from if we find an elementary particle that mediates that interaction, and that we can manipulate in the future.
How is information carried through a metal cable?
Walker Wichmann you can do it multiple ways - electricity, heat current, sound, etc
So artifical gravity training room does not exist yet.
Disappointed how entry-level this video was when you are talking about one of the most misunderstood concepts in science. Why not go a bit deeper and mention what gravity is with reference to quantum fields, or at least mention it as a process of spacetime annihilation. There's all sorts of topics you could have mentioned such as Alcubierre drives (that seek to use the properties of gravity and dark energy to achieve faster than light velocities), exotic matter, and some of the more pertinent discoveries with reference to the Casimir effect.
Because that's not what this video was trying to do. There are many videos, articles, essays, etc. out there that have exactly what you're looking for. This is a video that's going over the general ideas and troubles with artificial gravity, not in-depth explanations of each topic.
If you could warp space-time to get a warp drive, then you should be able to warp space-time within the outer space warp bubble to get artificial gravity inside a space ship. So, perhaps long-distance space travel for living beings will have to wait for warp drive technology, to get the technology for both propulsion and pseudogravity.
So do we live in the center of the Earth
I found a way but, need to prove my theory, any help would make it a reality, works when put into a computer simulation every time, now I need to build it problem is lack of funds, and some people are sceptical, but I really want to find out and see it through to prove right, or wrong.
How many times did he change his clothes to make this video?
If I'm driving and slide into my door that's gonna be really bad in a left hand drive car