– 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.

Tagged : # # # # # # # # # #

Dennis Veasley

100 thoughts on “The Artificial Gravity Lab”

  1. It's gravity chamber from DBZ or if you take into account the relativistic effect then it's the hyperbolic time chamber.

  2. No here’s my question, is there a speed at which force would be so great that you could throw a ball into the center and it would return to you?

  3. It be easier in space as astronauts wouldn't have to deal with a single spin force rather then other sources

  4. In 100 years this company will rename and be called capsule corp. Goku will take one of their ships to namek and train under 50x gravity.

  5. I really want to go in there. They should try a version where the floor tilts inwards, so you can stand "straight" without a tilted floor, to make walking easier

  6. I remember when I was ten at an amusement park. They had a ride that took you into a similar room. You had to walk down a tunnel into a cave to get to this room. The ride was exactly the same. They even had a guide who led you into the room with you. They would do the same experiments as Scott demonstrated. They would tell us to lift our arms. They even tossed a ball in the room.
    Who knew that the people working the ride were actually just scientists teaching us science while entertaining us.

  7. Tom Scott: rides what is a normal American carnival attraction.

  8. The problem is it has to be a mile and a half long to rotate slow enough that you wouldnt notice it so much. ^_^ good test set up

  9. How would you create artificial gravity by spinning the spaceship? The people inside wouldnt get pushed onto the walls, since there's no gravity keeping them on the floor. I need explanation

  10. You can do this with a trampoline if you jump for say 5 minutes get off the trampoline then jump again you get used to the jump and it feels weird

  11. This reminds me of when you’re a kid on the playground and you go on the merry-go-round and have ur friends push it as fast as possible and then u try to like stand up or something while it’s spinning 😂 very dangerous would not recommend

  12. Reminds me of those carnival rides where you're in a UFO and you're up against the wall, the UFO starts rotating and you're gradually being lifted

  13. Throwing the ball would be a bit more normal in 0g because you would by standing on the walls and throwing in front of yourself. Still weird though because you would only be aiming in the other person's direction and not directly at them.

  14. So the question is would a spaceship in space without gravity behave like this or like it did in the Martian

  15. All this time and they have not created a tilted floor angle to stand in a proper upright posture.

  16. It's there a place where I can do this and perform a list of tasks??? I've done it before and want to do it again now. Possibly work out too… It doesn't take too long if you have pondered it as much as I have as a kid but it's fun. thank you for adding a name to it.

  17. I feel like this whole video ignores the fact that if you WERE in a space ship, "gravity" would be oriented downwards (towards the walls of the room in this case), which you'd be standing on. Everything but throwing something up in the air would be normal.

  18. I wonder how much time and money they have wasted doing tests with uncoordinated nerds who probably trip on their own two feet 90 times a day anyway instead of normal people.

  19. So the computer measures position, velocity, acceleration and jerk, but not snap crackle and pop. =P Anyone who gets that deserves a gold cookie.

  20. So the answer to the question "What would happen if you dug a hole all the way through the center of the Earth (ignoring the fact that lava exists) and jumped in?" can now be found:

    You would start to be scrapped along the wall with more and more force, never even surviving until you reached the center.

  21. i think doing experiments with artificial gravity on earth is not the best idea if you want to test it's effects on human body because on earth there we have earth's gravity and if you are inside an artificial gravity device than there are 2 accelerations effecting you at the same time and that is what causes nausea, another thing i want to point out is the size of the machine shown in the video, it's quite small and because of that if you were to align your body to the vector of acceleration you would feel different forces pulling your head and feet, but if the machine was larger you wouldn't be able to feel the difference plus it wouldn't have to spin as fast.(sorry for not using any commas)

  22. It's the same thing as a graviton or sompthing at a amusement park or a fair or sompthing whatever they are everywhere

  23. I have seen a few comments joking about carnival rides that already do this. So I looked up the link provided in the description to learn more about this facility.
    If you are curious here are the specifications that are probably not matched by fairground attractions :
    – rotation up to 35rpm with an error of 0.001% at low speed and 0.1% at high speed
    – 4g at the periphery
    – 6000 pound payload
    – can run continuously for weeks
    – vibrations in the z axis <0.001g
    – onboard computer in the room connected via slip ring

  24. scale is your issue here, being s small the difference in "gravity" between the wall and even just a little way in is huge.
    If built on a 200m+ size ( larger requires lower RPM ) in space exactly like every wheel space station we've ever seen in films the difference between head and feet is minimal, you simply use the wall as the floor and you're good.
    tennis played on the wall of a wheel ( from bulkhead to bulkhead ) should work more or less ok as you're not trying to cross from one side of the wheel to the other and the ball's angular momentum matches the players.

  25. When you throw a ball across the room, you are attempting to throw it straight as you're moving and toward a wall on the other side of the room that's also moving. So you throw the ball away from you but the ball is also being thrown by your circular momentum. I can mentally see it but it would be intuitively confusing.

  26. Is there a theory behind this that if we made a space ship with a slightly higher number for gravity than earth, people in general will be more physically fit? Varying the rotation could alter peoples fitness due to the energy required to stand and move around?

  27. But surely if this was employed to produce artificial gravity in space, you would stand on the wall essentially to feel that 1G force pushing straight down. With no actual gravity in space it would surely feel perfectly normal and require no adaptation?

  28. Where I come from, we call spinning artificial gravity rooms Gravitrons. Also known as my favorite fair ride.

  29. There’s really fast version of those at the theme park that comes to my city every summer and I love it

  30. If you ever wore the DK2 Oculus prototype (I'm one of the original buyers) then you're used to motion sickness. You can learn to ignore it, though if you stop for a month you get sick again.

  31. Flatearther:- cool acting
    Btw cool video i would love to go in it but i m very very sensitive to motion sickness

  32. Not sure how this would work in space. We have the earth's gravity to thank for the experiments being conducted.

  33. I had this sort of auto body adaption thing happen after swimming in a strong current. After swimming in Utah for a while, my legs got adapted to fight it so I kept walking sideways and tilting while walking

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