The Artificial Gravity Lab


– Last video, I was at the Ashton Graybiel
Spatial Orientation Lab at Brandeis University, and while I was there one
of the team just casually mentioned that they have an
artificial gravity laboratory. Artificial Gravity Facility sounds like
something out of science fiction, but it’s not,
and there’s very much a reason why I’m keeping my head straight
and forward at the moment. This is the Artificial Gravity Facility,
otherwise known as the rotating room. So, let’s do some experiments. This is unscripted.
I don’t know what’s going to happen now, other than things are going very
weird when I move my arms. Okay, so it’s a room that rotates. No one has invented science fiction
gravity generators yet, but if you have a theoretical
spaceship going to Mars and you wanted to
generate apparent gravity to keep astronauts healthy,
that’s what you’d do. You would spin up the ship
and use centrifugal force. And that lab is the research prototype. How do humans deal with a
very strange gravitational environment? – The first thing that you should do is
try to push yourself off the wall and align your body with the
direction of the resultant. – Oh. Oh, okay! [laughter] – Now you’re standing upright. – Wow. Can I walk, or is that gonna– – No, don’t walk, it’s a little dangerous. – It is almost impossible to envision long duration space flight
without artificial gravity. The best way to study
artificial gravity on Earth is to build a rotating environment. We started designing it in the mid-80s. Ideally we want to study its
effects on the human body and we want to learn also
how to pre-adapt astronauts to the force of artificial gravity. 99.9% of those will be highly
dysfunctional individuals until adapted. – They have NASA-standard sick bags
for everyone, by the way. I was required to keep one in my
back pocket throughout just in case, because if you tilt your head too fast your inner ear has no idea what’s going on
and things go… wrong, very quickly. – And now move your arm
and try to go as straight as you can. – [laughter] Oh, I moved my head. – You shouldn’t move your head.
– Do you get used to this? – Yeah, yeah, you get used to it, yeah.
You can adapt. Move your arms and try to
feel this force that is… – Oh. That is… Okay, just to be clear,
I’m not putting this on, as far as I’m concerned, the signals I’m giving to my muscles are,
‘move my arms forward’. And now I’m forcing them. But I’m pushing against
a force here, you know. – If you keep going, at some point
you won’t feel the force anymore. – Oh that’s weird. – That’s weird, right?
– That’s so weird. – So now we are adapted. – So if I try to do anything else,
I haven’t adjusted to it. But that specific movement,
my body’s got used to. – That’s right.
– Wow. – One way to visualise this force is for me to try and throw a
little tennis ball at you. I will throw it straight at you, – Okay.
– and see what happens, okay? – Whoa! What? [laughter] I’m struggling to work this out. Wh… Because, in my head, this
is a normal reference frame. But it’s clearly not.
– We are rotating. And now I’m gonna throw it over there. – Yeah.
– And hopefully it’s gonna get at you.
– Okay. – Are you ready? – Yeah, throw it. – Yes! – Ah nice.
– Great. [laughter] – Wow. All those artefacts are
from the Coriolis force. It’s not a real force acting
on the ball, but it looks like one when you’re in that
weird rotating environment. Have a look at this 360° image of the lab. Now, it’s a little distorted because it’s from
a single camera in the middle, but it’s close enough.
Here’s the tricky part: the circumference of a circle is longer
the further out you go from the middle. But because everything in that circle
is rotating at the same speed, once around every six seconds, things on the outside have
farther to travel, so they’re moving at a faster speed
than things on the inside. On the outside, we’re moving pretty fast,
but that camera in the middle is just spinning on the spot. So let’s mark the sideways
speed that everything is moving at, relative
to the rest of the world. Green is fast, red is slow. When you throw a ball across
that room it keeps that sideways speed that it
had when it left your hand as it travels into slower
moving areas of the room. Now, out at the edge, that was fine. It was going the same speed
as everything around it, so it looked like it aimed for the centre. But by the time it starts to
get there, it’s a missile, flying outwards compared
to everything around it. Now from the outside that make sense. After it leaves your hand, the ball just moves in a straight line. From the inside it looks like there’s a force
suddenly sending it sideways, and that is the Coriolis force. And it’s not something your brain
has evolved to deal with. – Now, if you move your arms,
you’re pretty much fine. – Oh! I… [laughter] – Just by moving around,
you have been adapting. – That’s ridiculous.
Thank you so so much. I’m gonna throw this at
you one more time, okay? – Okay. [laughter] – The question that lab
needs to answer is: Can humans adapt to that over time? And if so, how long does it take them
to come back down to Earth? Let’s bring this to a stop! Avi, can you bring us to zero? Bring your hands down and don’t move. – I swear, the room is tilting– – Don’t move! Oh, that’s weird. – And we’re stopped,
so try to swing your arms in front of you. [laughter] Oh, I don’t like that. – You’ve been adapted. There are no unusual
forces on your arms but you feel it, right?
– But they’re still, yeah, They’re still doing that. – And now you have to re-adapt. – Thank you so, so much. Thank you so much to
everyone at the Ashton Graybiel Spatial Orientation Lab
at Brandeis University. Pull down on the description
for more about them and their work.

Paul Whisler

100 Comments

  1. I held this video back by a day, because putting out a serious video on April 1st is a fool's errand.

  2. This is like that cool spaceship ride at the fair. Except without the music, and lights.

  3. Хоть кто-то претворяет идеи Циолковского в жизнь, на благо науки.

  4. I don’t know how I just found your channel today, but I’ve not got ANY work done today. 😂 I love it! Thank you for the content!

  5. Rendezvous with Rama explored the coriolis effects in a gigantic fast-rotating spacecraft and it was really interesting stuff, with zero g in the middle of the cylinder, curved waterfalls and other weird things.

  6. I think we will not let Ourselves evolve and messed up because all our inventions are short and keeps changing…

  7. "Artificial Gravity" shows scientists in a Gravitron.

    You're technically correct, I suppose. I can't help but feel a bit cheated.

  8. I've been on something like that at the fair in the UK.
    You could slide up the wall and turn upside down. So fun xxx

  9. I like how they're doing this at a highly advanced laboratory when they could've just done it at a fun fair

  10. how large is would the room need to be to realistically simulate 1G on and walk on wall to do actual work

  11. How can they get any real data out of this at all? It would have to built in space to test. Sure they are making centrifugal force to hold them against the wall but gravity is still pulling him to the floor.

  12. I'd like to ask. When you spin yourself on an office chair a bunch of times and then you try to walk in a straight line you are pulled to one side as well. Is that just a magnified example of what we are seeing here? The process of adaptation?

  13. By spinning it you are creating an outward ether vortex flow, that's why you get pushed outwards, because the space between is not empty, its filled with fifth element called ether. Centrifugal force is a primitive way of creating artificial gravity. Real artificial gravity is centripetal and can be only created by creating and controlling the ether flow with high voltage high frequency resonating electricity, and you don't need to rotate the whole spaceship, only the electric fields. You can read book Uncovering the Missing Secrets of Magnetism to start learning about the ether.

  14. This room is just a couple feet narrower than the SpaceX Starship. 22ft, vs ~30ft (9m). if anyone's curious what kind of artificial g dynamics are plausible in that vehicle. Skylab was 21 feet (6.6m)

  15. I saw the tennis balls around you increase between shots, how many times did it REALLY take Tom?

  16. But this rotating room still have the 1G from earth pushing downward.
    To build it similar to how in space it would feel, it should be in free fall somehow.
    I'm not convinced with the scientific accuracy of this experiment.

  17. Imagine spinning it fast enough that when you throw the ball, you can catch it yourself. From an outside observer, you threw it in a straight line and got to the other side to catch it but to you, you threw it and it curved back to you.

  18. 2:34 Does this mean that jacking off in space feels different bc you can’t feel the repudiative motion anymore 🤨🤯

  19. I would not be able to handle this i would turn my head immediately

  20. You throw a ball in a straight line and then you rotate into it… seams not confusing at all to me

  21. a rotating room that is a research prototype? This was a carnival ride over 20 years ago, what is happening to this world?

  22. why dont they slope the walls/ floors to match the coriolis force. it would be an upside down dome shape with a quadratic curve. that way you should be able to walk fairly safely on all floor surfaces. and if it were large enough or spinning fast enough you could almost walk at a 90 degree angle. (not actually since the force would need to be much greater than gravity.

  23. Nice explanation of coriolis effect… also, im still dont understand but this video helps xD

  24. Ha, I'm way ahead of science, I've been on those things at theme parks since I was a kid. Maybe I should be an astronaut.

  25. Come on Tom haven’t you ever been to an American fair? I’ve thrown up in these many times in my childhood 😉

  26. U must be clear with terms :-
    You:- You experienced a Centrifugal Force ( Pseudo / Non- Inertial force of Centripetal force ) due to the rotation.
    BALL :- Ball on the other hand experienced a Centripetal force ( Directed towards the center of rotation ) when it left contact from the throwers hand.When the ball was on the ground and when it was held by you it experienced Centrifugal Force.

  27. so they taking a timless fair ride and using to to research (i mean that what this sounds like to me)

  28. That's like when you're jumping on a trampoline and you suddenly jump into a stiff surface, and when you try to jump it feels suuuuuper weird that you no longer can jump extra high.

  29. So just thinking about this. Wouldn't young people be better at adapting to this like the reverse bike? Bet a kid could raise his arms and dance around no problem.

  30. I’d say yes, humans can adapt to this kind of room similar to how humans adapt to the movement of a ship and therefore adapting to being back on earth after being in another environment would take longer the more time you spent away – just like when being on a boat for a long time there is still the feeling of waves even while being on solid ground for some time

  31. If you filmed this with a phone it would be all weird because it would try to stabilize

  32. Smarter every day made a video about a similar effect on a sprinkler. It makes it much easier to understand what is going on in the room.

  33. they started building it in the 80's, and yet all they said is "ideally we will test how humans adapt to ling term artificial gravity"… you haven't tested that yet? what have you been doing??

  34. My question is, would this be the same in space? I think earths gravity is throwing off this experiment. either way it was interesting.

  35. You'd have to make the radius far larger than that tiny room. Something in the shape of a long barbell would be a good start.

  36. There is a carnival ride called the gravatron that uses this concept. You can stand almost perpendicular to the floor at the highest speeds

  37. So, theoretically, if you spun the room up fast enough, you could throw the tennis ball to yourself

  38. My question is this tho, on long term space flights wouldnt people be inhabiting the "walls" of the space ship? If its large enough there wont have to be anything to adapt to since your body can still function as if the surface is flat if the circumference is large enough.

  39. I used to go on the ride at the carnival that did this all the time. Got in trouble everytime I was on it because I wasn't staying on the wall

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