Artificial Gravity

แชร์
ฝัง
  • เผยแพร่เมื่อ 8 ม.ค. 2019
  • Artificial gravity is a concept that is ubiquitous in our science fiction yet elusive in our space program. Why is this? And how could we develop artificial gravity soon? In a Cool Worlds special, this video essay goes in depth on the topic discussing why centrifuges are the most plausible solution and early ideas on the topic. Join us a journey from Einstein's equivalence principle, to O'Neill Cylinders and Stanford Tori; from Coriolis forces to near-term experiments. Grab a cup of a tea and enjoy.
    You can now support our research program and the Cool Worlds Lab at Columbia University: www.coolworldslab.com/support
    Chapters:
    0:08 Introduction
    5:43 The O’Neill Cylinder
    8:10 The Stanford Torus
    10:16 Down-Sizing
    13:31 Coriolis
    16:52 Vertical Coriolis
    19:32 Tipping Coriolis
    21:34 Canal Sickness
    27:01 Stability
    29:28 Near-Tear Experiments
    Academic articles used:
    ► Nesti et al. (2014), "Human sensitivity to vertical motion", Exp Brain Res., 232, 303: www.ncbi.nlm.nih.gov/pmc/arti...
    ► Harris et al. (2014), "How Much Gravity Is Needed to Establish the Perceptual Upright?", PLoS One, 9, e106207: www.ncbi.nlm.nih.gov/pmc/arti... (0.15g)
    ► Cohen et al. (2000), "Effects of Prolonged Centrifugation on Orthostasis", Aerospace Medical Association 72nd Annual Scientific Meeting 2001: ntrs.nasa.gov/search.jsp?R=20...
    ► Graybiel et al. (1960), "Observations on Human Subjects Living in a 'Slow Rotation Room' for Periods of Two Days", Arch Neurol., 3, 55: jamanetwork.com/journals/jama...
    ► Theodore Hall (1993), "The Architecture of Artificial Gravity: Archetypes and Transformations of Terrestrial Design", PhD Thesis, University of Michigan: www.artificial-gravity.com/SSI...
    ► Theodore Hall (2002), "Architectural Considerations for a Minimum Mass, Minimum Energy, Artificial Gravity Environment", SAE Technical paper Series, www.artificial-gravity.com/SAE...
    ► Online lecture by Theodore Hall in 2015 at SEEDS: • SEDS@UM - Artificial G...
    ► Holderman & Henderson (2011): www.scribd.com/document/51592...
    ► Kirk Sorensen (2005), "A Tether-Based Variable-Gravity Research Facility Concept": www.artificial-gravity.com/JAN...
    Video materials used:
    ► Numerous NASA videos, in particular of ISS, the Dawn Mission, as well Stanford Torus video: • Space Colonization St...
    ► Nautilus X videos from f r a g o m a t i k: • Nautilus-X - A Real Sp... and • More Nautilus-X
    ► High G blackout videos from VIDSTORM: • Video
    ► Inner ear video from Fauquier ENT: • How the Inner Ear Bala...
    ► World Record 83 G Deceleration Peak on Rocket Sled 1958-05-16 (1967) USAF: • Video
    ► SpaceX Falcon Heavy test flight: • Falcon Heavy Test Flight
    ► "ORBIT - A Journey Around Earth in Real Time" by Seán Doran: • Video
    ► MIT Coriolis demonstration: • Coriolis Effect
    ► MPI CyberMotion Simulator: • The MPI CyberMotion Si...
    ► Not a video but thanks to Don Davis for his amazing images used
    ► Rotating simulators by Tom Lechner and William Hoza: www.tomlechner.com/outerspace/ and william.hoza.us/centrifuge/#4&1
    Filmclips, in order of appearance;
    ► Star Trek: The Original Series (1966-1967, Paramount)
    ► Star Trek: Enterprise (2001-2005, Paramount)
    ► Interstellar (2014, Warner Bros)
    ► 2001: A Space Odyssey (1968, Warner Bros)
    ► The Martian (2015, 20th Century Fox)
    ► Avatar (2009, 20th Century Fox)
    ► Elysium (2013, Sony Pictures)
    Music is by Chris Zabriskie (chriszabriskie.com/) and is licensed under a Creative Commons Attribution license (creativecommons.org/licenses/..., in order of appearance;
    ► Cylinder Five (chriszabriskie.com/cylinders/)
    ► Cylinder Nine (chriszabriskie.com/cylinders/)
    ► Cylinder Three (chriszabriskie.com/cylinders/)
    ► We Were Never Meant to Live Here (chriszabriskie.com/neptuneflux/)
    ► That Hopeful Future Is All I've Ever Known (chriszabriskie.com/neptuneflux/)
    ► The Sun is Scheduled to Come Out Tomorrow ( / the-sun-is-scheduled-t... )
    ► Cylinder Seven (chriszabriskie.com/cylinders/)
    ► Cylinder Four (chriszabriskie.com/cylinders/)
    ► Cylinder Eight (chriszabriskie.com/cylinders/)
    And also...
    ► Columbia University Department of Astronomy: www.astro.columbia.edu
    ► Cool Worlds Lab website: coolworlds.astro.columbia.edu
    ::Playlists For Channel::
    Latest Cool Worlds Videos ► bit.ly/NewCoolWorlds
    Cool Worlds Research ► bit.ly/CoolWorldsResearch
    Tabby's Star ► bit.ly/TabbysStar
    ::Follow us::
    SUBSCRIBE to the channel bit.ly/CoolWorldsSubscribe
    Cool Worlds Lab coolworlds.astro.columbia.edu
    Twitter / david_kipping
    THANKS FOR WATCHING!!
  • วิทยาศาสตร์และเทคโนโลยี

ความคิดเห็น • 4.6K

  • @JohnMichaelGodier
    @JohnMichaelGodier 5 ปีที่แล้ว +3383

    Hands down the best presentation I've ever seen on the subject. Amazing!

    • @milky_wayan
      @milky_wayan 5 ปีที่แล้ว +107

      JMG omg

    • @kd1s
      @kd1s 5 ปีที่แล้ว +23

      Agreed - but I think it discounts what the technology will be capable of say 50 years from now, or 100 years. Just think how different the world is right now just between the years of 1919 and 2019. You see my central thesis here.

    • @DLCaster
      @DLCaster 5 ปีที่แล้ว +76

      @@kd1s There will indeed be advances, but the basic physics will remain unchanged.

    • @wraithwolfnight813
      @wraithwolfnight813 5 ปีที่แล้ว +10

      a lot of people do not know how gravity works or what gravity is, and i did not even understand 75% of what you said. very good video, why don't we test this in space? we as humans will NEVER go to a planet en-tell we find a way to deal with artificial gravity or gavity.

    • @kd1s
      @kd1s 5 ปีที่แล้ว +2

      @@wraithwolfnight813 Yes indeed I'm fully aware that many people have no idea about physics, gravity.

  • @lucchesi87
    @lucchesi87 4 ปีที่แล้ว +556

    "Occupants would be thrown about the habitat, in a clearly unacceptable manner"
    That sense of humor... LOL

    • @davidbrandenburg8029
      @davidbrandenburg8029 4 ปีที่แล้ว +4

      make them all wear those padded sumo wrestler suits!.

    • @rpbajb
      @rpbajb 4 ปีที่แล้ว +7

      Stage dived and missed the crowd.

    • @CaseyFinSF
      @CaseyFinSF 4 ปีที่แล้ว +5

      Velcro suits.... need I say more?

    • @plinyelder8156
      @plinyelder8156 4 ปีที่แล้ว +4

      I think it was plainly direct. No humor.

    • @awesomedata8973
      @awesomedata8973 4 ปีที่แล้ว +1

      Not at all understated.

  • @acosma7730
    @acosma7730 10 หลายเดือนก่อน +20

    I’m a novelist and I’m new to writing science fiction. Read a lot when I was young. Writing it seemed so daunting. These videos are fantastic and incredibly useful for the world building I’m aiming to do. Thanks for posting them.

  • @theos4931
    @theos4931 2 ปีที่แล้ว +89

    I'm a psychology scholar, and you make astrophysics sound so simple that even I can understand. That's truly remarkable. I've learned so much from your channel. Thank you.

    • @allineedis1mike81
      @allineedis1mike81 2 ปีที่แล้ว +9

      Psychology or anything in biology makes space engineering look tame and simple by comparison. You work on the most complicated object known to exist. I absolutely love space tech but what you guys do is also pretty damn boss by comparison😉.

    • @Liveforgamingman
      @Liveforgamingman 2 ปีที่แล้ว +4

      I studied political science and even I can understand. Truly remarkable.

    • @xonerate371
      @xonerate371 ปีที่แล้ว +1

      It’s truly remarkable they conned the world into thinking the universe spins in all directions at millioms of miles an hour, yet the Earth is so stable, temples stand for 1000’s of years and the zodiacal symbols displayed on them hasn’t moved an inch!

    • @shichilaofa
      @shichilaofa ปีที่แล้ว

      @AllINeedis1Mike not really. Here in our country psychology is for stupid people. Very easy course.

    • @atlantic_love
      @atlantic_love 4 หลายเดือนก่อน +1

      @@allineedis1mike81 No, it doesn't.

  • @paulcwyuen
    @paulcwyuen 3 ปีที่แล้ว +80

    The preparation work for this video is equivalent to a thesis. Very impressive.

  • @andyroid7339
    @andyroid7339 5 ปีที่แล้ว +165

    I don't think that this presentation could be more comprehensive! The amount of work you've put in is incredible. Well Done and Thankyou!

    • @hintzofcolorconcepts
      @hintzofcolorconcepts 4 ปีที่แล้ว

      What about centrifugal propulsion systems from the 1970's that outperform their pathetic single accelerator ion drive? No mention of launching rockets from weather balloons (or reusable high altitude dirigibles) to save our atmosphere from wasting rocket fuel fighting wind resistance?
      The stupidity of human's 20th century public space technology is laughable.

    • @KB-fo1sr
      @KB-fo1sr 3 ปีที่แล้ว +5

      @@hintzofcolorconcepts You probably sound clever to "You"🙄

    • @rusmiller816
      @rusmiller816 3 ปีที่แล้ว

      @@KB-fo1sr 👏👏👏

    • @danielmcquay2872
      @danielmcquay2872 3 ปีที่แล้ว +2

      knowing that people think about these things and then explain them this well makes me feel like we have some kind of future.

    • @tonyhawk123
      @tonyhawk123 2 ปีที่แล้ว +1

      Law of TH-cam. No matter how well explained and produced a video is, it won't keep the idiots away.

  • @veorEL
    @veorEL 3 ปีที่แล้ว +89

    I definitely enjoy this style of videos 👍
    The main reason is, that you took equations and actually broke them down showing how the terms would affect the outcome.
    I think this is a much better way to convey information, instead of constantly using metaphors (like other channels do), in my opinion you managed to hit the sweet spot with this video.
    I was able to follow and was engaged the whole time.
    Congrats to the writer, director, animation and editor of this one.

  • @simonkeeton985
    @simonkeeton985 2 ปีที่แล้ว +17

    This would take my entire life to even collate such detail. Genius

  • @johnq6619
    @johnq6619 4 ปีที่แล้ว +144

    Thank you for not shying away from technical language. Complicated topics require complicated explanations.

    • @JamesHawkeYouTube
      @JamesHawkeYouTube 4 ปีที่แล้ว +2

      truth is simple

    • @brianarbenz1329
      @brianarbenz1329 4 ปีที่แล้ว +1

      They also avoided jargon. No, "Roger on your plan to fix Alpha Echo three Five. This is Mission Control, trannnnnnnnnnsmission concluded."

    • @calamar1e320
      @calamar1e320 3 ปีที่แล้ว +2

      Truth is simple, but specification on the basis of what MAKES it truth will always be complicated

  • @milky_wayan
    @milky_wayan 5 ปีที่แล้ว +348

    Wow. This is like Isaac Arthur. A documentary on every aspect of artificial gravity we know. Great job, Cool Worlds!

    • @annoyed707
      @annoyed707 5 ปีที่แล้ว +10

      It's both like and liked by Isaac Arthur.

    • @carlosandleon
      @carlosandleon 5 ปีที่แล้ว +12

      except no speech impediment lol

    • @ipnotfound7046
      @ipnotfound7046 5 ปีที่แล้ว +12

      Carlos Leon you don't have to be mean

    • @danmannz
      @danmannz 5 ปีที่แล้ว +3

      I was so thinking that, and without the speech impediment.

    • @vincewilson1
      @vincewilson1 5 ปีที่แล้ว +9

      @@carlosandleon He says he has a speech impediment, but I can barely tell. He sounds perfectly understandable to me.

  • @wade8130
    @wade8130 3 ปีที่แล้ว +40

    I sometimes imagine a huge cylindrical service module, containing life support, some sort of propulsion with attitude retros, and a much shorter, but same diameter, O'Neill cylinder at one end for the crew.
    Great video!

    • @allineedis1mike81
      @allineedis1mike81 2 ปีที่แล้ว +3

      It always seemed like it would be simpler to me to start out with your counter weight. Maybe capture a NEO or something like that. Have your habitation and manufacturing pods ready in pairs to connect to the counter weight (hub really) with cables or something similar. Maybe even traversable tubes. Then just keep adding pairs getting closer and closer to a circle. Maybe the pods could even manufacture the spaces between them to finish the big wheel. Honestly I think making powerful nuclear reactors for space is gonna be a must to do any of the big stuff we all dream about. It takes a lot of energy to process rock and metal into something useful. And for moving it all around its absolutely required. All the reaction mass we could ever need is just sitting out there in frozen chunks. We just need to be able to get it hot and blow it out the back. Its such a shame that everything nuclear has such a huge public perception problem. Thats gonna be a major problem I think. People just love the drama so much they ignore the facts on this particular tech. Maybe we should come up with a new name for nuclear tech? That may be all it takes. The fuel comes from the Earth so lets call it organic rock power or something. People will loose interest and find something else to complain about.🤣

  • @raymondmejias8071
    @raymondmejias8071 2 ปีที่แล้ว +35

    This man is the best, he is a genius totally one of the best narrators out there...🙏😇 blessings to all!!

  • @GComas-jn2yc
    @GComas-jn2yc 3 ปีที่แล้ว +47

    Thank you for making your video in caption. Without your captions in this video, how can deaf people like me learn of artificial gravity. Again , thank you!
    About this video, just one word... “Wooooow!”

    • @callemdavies7942
      @callemdavies7942 3 ปีที่แล้ว +1

      Ah cool, thanks, I would not have noticed that. That makes the detail and effort put into this even more awesome!

  • @CJ-gn8qm
    @CJ-gn8qm 3 ปีที่แล้ว +210

    As an engineer who applies theses principles this is an exceptional presentation!

    • @josephw4830
      @josephw4830 3 ปีที่แล้ว

      Engineer for whom and doing what?
      Supply a link to your thesis paper, while you're at it, too. :D

    • @CJ-gn8qm
      @CJ-gn8qm 3 ปีที่แล้ว +26

      So I’m not sure you are interested or just taking the piss! Actually I am a Fire Engineer and one of the areas I apply theses principles is in the application of fire dynamics to the design of buildings. This involves complex computational fluid dynamic analysis which resolves fire-driven fluid flow (you may know this as smoke). The software solves numerically a form of Navier-Stokes equations appropriate for low-speed, thermally-driven flow, with an emphasis on heat transport properties from fires and is based on conservation laws for physical quantities of mass, momentum, energy and species concentration (you may know this as different gas concentration such as CO). Clearly all this calculation considers the contribution of gravity. My thesis (many years ago now) was based on a comparative study of empirically derived equations and computational fluid dynamic analysis which showed very close correlation to experiments undertaken. Thus allowing such techniques to be used to predict the fire performance of buildings with a high degree of confidence.
      Hope this helps

    • @josephw4830
      @josephw4830 3 ปีที่แล้ว

      @@CJ-gn8qm
      Well how very good of you to lend your expertise in mythematics.
      While math never lies, men do. Often employing math to push their bullshit. This is exactly what I read, so graciously supplied by yourself.
      A glass is 1/2 full/empty. If you agree 1/2 full is the same as 1/2 empty, then :
      .5F = .5E
      Solving
      (2).5F = (2).5E
      Reducing
      F = E
      Interesting how math is so easily manipulated.. unless you believe Full is the same as Empty.
      Here's another:
      1+1=1
      1+1=2
      1+1=3
      1+1=>3
      All 4 statements are TRUE when the statements are applied to marriage as the subject.
      So seeing how your firefighting expertise is so all knowing;
      What IS gravity and
      What MAKES it?
      I will accept any EMPIRICAL proof.
      Have fun.

    • @earthalienzapa3237
      @earthalienzapa3237 3 ปีที่แล้ว +2

      Be nice we could adjust gravity under us so we walk weight only 10 pounds. Cars 30 pounds motors get 200 miles to gallon 20 horse motor. Aliens learned how to change gravity. And why did you go back pay month to talk to someone when its free use a CB Radio

    • @CJ-gn8qm
      @CJ-gn8qm 3 ปีที่แล้ว +19

      @@josephw4830 you’re no mathematician! You’re initial proposition has insufficient information for it to be equal!

  • @timothyskattum950
    @timothyskattum950 3 ปีที่แล้ว +19

    Truth based on reality is often our greatest hurdle. This was beautiful, thank you Cool Worlds.

    • @slevinchannel7589
      @slevinchannel7589 2 ปีที่แล้ว

      Anti-Science is on the Rise.
      Please do something against this by asking me and others
      for some good Channel-Recommendations of Education
      and/or Science and also give me some.

  • @jamesbuckley8106
    @jamesbuckley8106 3 ปีที่แล้ว +20

    Brilliant documentary deserves a subscription for sure , more please, thanks. 😎

  • @isaacarthurSFIA
    @isaacarthurSFIA 5 ปีที่แล้ว +633

    Great Episode!

    • @CoolWorldsLab
      @CoolWorldsLab  5 ปีที่แล้ว +44

      Isaac Arthur thanks Isaac!

    • @sanjivinsmoke3322
      @sanjivinsmoke3322 5 ปีที่แล้ว +11

      Ohhhh.. SFIA is here...

    • @milky_wayan
      @milky_wayan 5 ปีที่แล้ว +11

      holy moly!!!

    • @jameswhitman3934
      @jameswhitman3934 5 ปีที่แล้ว +16

      I'm impressed. I don't know if you will read this, but I've been thinking about the ability for technology to give people meaning and novelty when they are traveling to other worlds. The psychological effects of space travel are just as significant as the physical ones, and in many ways intertwined. Great to see a wonderful video like this and possibly communicate with one of my favorite TH-camrs. It's a good day!

    • @isaacarthurSFIA
      @isaacarthurSFIA 5 ปีที่แล้ว +12

      @@jameswhitman3934 Thanks!

  • @marvinkitfox3386
    @marvinkitfox3386 4 ปีที่แล้ว +86

    Your presentation voice takes a bit of getting used to, but it is VERY clear.
    At no time ever in this video did I have to sit and wonder just what had been said.
    .
    As someone who very often needs to enable captions to have any clue what is being said on TH-cam, I appreciate this very much!
    P.S.
    11/10 on content!

    • @marvinkitfox3386
      @marvinkitfox3386 3 ปีที่แล้ว

      @@deusexaethera Because it is not merely a foreign accent?
      It is a clear and deliberate enunciation of the sounds in the speech, done for emphasis on clarity not beauty. Exactly what one wants for a presentation.
      It is a big deal because the presenter does it deliberately, and for our benefit.

    • @marvinkitfox3386
      @marvinkitfox3386 3 ปีที่แล้ว

      @@deusexaethera Go ask your therapist. He will know. You have now BOTH stated that his voice is "just a foreign accent, what's the big deal?" AND agreed with my statement that it is being done deliberately as part of the presentation.
      These two statements are conflicting. It is *very* unhealthy to disagree with yourself!

  • @dmsoundcollective6746
    @dmsoundcollective6746 7 หลายเดือนก่อน +4

    i know this is 4 years old but wow this is awesome David! thanks again for all the hard work you put into these.

  • @myidjoeystudios9582
    @myidjoeystudios9582 4 ปีที่แล้ว +80

    What a brilliant presentation for such a hard concept. Awesome and stunning!!

  • @nocapoca5313
    @nocapoca5313 3 ปีที่แล้ว +48

    The counterweight design looks to me the best solution for long trips.
    On a trip to Mars it can be set to the gravity of the Mars, so the crew would be accomodated at the arival.
    But here is an other solution: instead of a counterrotating balast, can be used 2 ships attached with a cable, wich has some advantages: more space for the crew and backup in case of technical failures.

    • @allineedis1mike81
      @allineedis1mike81 2 ปีที่แล้ว +3

      This may not be feasble but it would be super cool if once arrived at the destination they spin up even faster and fling the ships off in the desired direction. Maybe just to show off😁

    • @aone7528
      @aone7528 ปีที่แล้ว

      PPP

    • @MilesEdgeworth129
      @MilesEdgeworth129 ปีที่แล้ว +3

      SpaceX has such an idea as this. It consists of two Starships attached via a high-tensile tether system, while a third one, dedicated solely to flight control, provides thrust at the middle of the tether.

  • @brianwolent9593
    @brianwolent9593 หลายเดือนก่อน

    I'm 64 and followed Nasa from the start of man going to space. It was a great time in my life. Your presentations renew that excitement. Thank you.

  • @LordCommissarLex
    @LordCommissarLex 29 วันที่ผ่านมา

    The way that he's so elegantly explains things and simple to understand complex topics. has honestly made me fall in love with physics and astronomy. I always respected The Field. But seeing his videos as honestly created a passion for me.

  • @glutenfreegam3r177
    @glutenfreegam3r177 5 ปีที่แล้ว +28

    The BEST 30 minute documentary EVER!

    • @CoolWorldsLab
      @CoolWorldsLab  5 ปีที่แล้ว +2

      That’s a very kind comment, thanks!

    • @giantfisher
      @giantfisher 4 ปีที่แล้ว

      I agree with @Gluten Free. It seems every video on TH-cam is at least 10 minutes even if it's just to demonstrate how to tie shoelaces... they always include irrelevant details like the history of the shoelace. But you have TONS of detailed relevant information in just 30 minutes.

  • @sanjivinsmoke3322
    @sanjivinsmoke3322 5 ปีที่แล้ว +75

    More video like this would be great. Connecting science concepts (or even sci-fi) with public through real science and realistic engineering limits. Educational, entertaining and inspirational too.

  • @deweyoxberg
    @deweyoxberg 2 ปีที่แล้ว +3

    What a gem of a presentation. Fascinating history lesson, complex concepts presented in easy to understand analogies, with a little bit of humour. The T-handle experiment blew my mind: definitely wouldn't want to be on that ride!
    10/10 would replay again.

  • @katalytically
    @katalytically ปีที่แล้ว +3

    Loved the video. I have seen others that essentially say that "centrifugal gravity" will not work because of the Coriolis effect. This demonstrates that it can work within specific parameters. What I really liked is the statement that no tests or experiments have been performed in space to determine how mild or severe the Coriolis effect is on the human vestibular system. The earth based testing is, as mentioned, influenced by the earth's gravitational field thus making it impossible to adequately determine what effect "centrifugal gravity" will actually have. If we are going to attempt to occupy space or colonize other planets we need to find a way to make space travel feasible. It is a total waste of people and resources if we send people to Mars, only to have them arrive so incapacitated from muscle loss that they can't even support their own weight at 1/4 g let alone be able to construct habitats and other facilities they will need to survive. The human race is within reach of being able to colonize the Moon and Mars, but we are still lacking well developed technologies. It seems everyone has their eye on the prize but aren't looking at the details that will actually make it work.

  • @edmund3504
    @edmund3504 5 ปีที่แล้ว +26

    I'm only 3 minutes into the video and I'm wondering why I feel such a sense of wonder and curiosity despite gravity being a well-established concept. Then I realized... it's the music. I love it.

    • @SteelWolf13
      @SteelWolf13 5 ปีที่แล้ว

      Kinda pulls you in. :)

    • @lsborland
      @lsborland 4 ปีที่แล้ว +1

      For me the awe is not so much the concept as the acknowledgement of the real-world physical constraints that humans already experience here on Earth. We are in a gravitational "Goldilocks" zone here on Earth, so much so that we take it for granted.

    • @cappythumper514
      @cappythumper514 4 ปีที่แล้ว +1

      @@SteelWolf13 I glad we haven't fallen off the earth yet. :)

  • @jammystraub488
    @jammystraub488 5 ปีที่แล้ว +11

    Thank you for making this. What differentiates this video from similar ones on TH-cam was the inclusion of historical photographs and technical drawings. Well done.

  • @joz6683
    @joz6683 ปีที่แล้ว +9

    Thanks for this subject. I have been watching your channel for about a year and going through your back catalogue. The idea of the tidal forces and gravity gradient and other matters is timely, as I have been writing a space based detective novel based on board both a Stanford Torus and a O'Neill Cylinder. I had not considered these issues until now. About half way through the process, the novel is complete, just doing a read through and some editing and revisions. Wish me luck.

  • @MikeZablo
    @MikeZablo 3 ปีที่แล้ว +2

    Many channel on TH-cam with good content, presentation etc but they lack of quality narrative voice! I can listen to you with interest for hours!

  • @WestOfEarth
    @WestOfEarth 5 ปีที่แล้ว +201

    For long duration missions, would it be acceptable to have a special smaller rotating section of the spaceship used solely for sleep? Wouldn't this allow the astronauts' bodies to regenerate muscle and bone loss? During the day, they would live primarily in zero g carrying out whatever activities needed. Possibly have these tiny apartments equipped with bathrooms for...you know gravity assist so-to-speak.

    • @CoolWorldsLab
      @CoolWorldsLab  5 ปีที่แล้ว +94

      WestOfEarth yes there are certainly benefits to a zero g environment so a sleep system could work great. Research on the hours needed in the centrifuge to adequately recover would be needed (and very interesting)

    • @Bobsry16
      @Bobsry16 5 ปีที่แล้ว +12

      If the work out space, sleep and bathrooms were in a centrifuge that would be good, along with a continuous hallway for walking and jogging..

    • @dougsinthailand7176
      @dougsinthailand7176 5 ปีที่แล้ว +53

      Another issue is how to create a seal between the moving section and the "stationary" section such that there would be no friction and no atmosphere loss? Any friction at all might cause the whole craft to start rotating. Interesting problems to solve here!

    • @Bobsry16
      @Bobsry16 5 ปีที่แล้ว +10

      @@dougsinthailand7176 Yea that's why i feel the best approach is to rotate a whole cylinder large enough to have a zero g module in the center.

    • @dougsinthailand7176
      @dougsinthailand7176 5 ปีที่แล้ว +6

      Check out the Gateway Foundation's new video, @@Bobsry16

  • @LucasDimoveo
    @LucasDimoveo 5 ปีที่แล้ว +38

    PLEASE make more videos like this! Emphasizing the science in sci-fi will show us the way forward ...

    • @CoolWorldsLab
      @CoolWorldsLab  5 ปีที่แล้ว +1

      Lucas Dimoveo sure! What topics would you want me to cover?

    • @LucasDimoveo
      @LucasDimoveo 5 ปีที่แล้ว +2

      @Cool Worlds - one topic that I'd like to see covered is human augmentation for space flight. I know that is outside of your wheelhouse, but it is certainly a topic I'd like to see covered

    • @ooooneeee
      @ooooneeee 5 ปีที่แล้ว

      @@CoolWorldsLab please do a video on whether we should colonise Mars the 1g clouds of Venus first.

    • @ChessMasterNate
      @ChessMasterNate 5 ปีที่แล้ว +2

      @@CoolWorldsLab Power generation in space for use in mining, refining, colonization and such (other than travel; travel has been done to death). Everything from geothermal, solar, nuclear, wind and more exotic stuff, the complexities of doing it in space, on the Moon, on Mars, asteroids, etc. Molten salt nuclear is probably the most flexible, and solar is reliable and cheap anywhere near the Sun, but there are lots of environments, and possibilities.
      Another is space derived materials. How do you make adhesives, lubricants, building materials, clothing, and toilet paper. Mining and refining techniques... Forging, 3-D printing...
      Another is food. Food is a biggie. What do we know about growing stuff in space? What would we eat, if were were trying to be efficient, and would never be resupplied. We just have Moon regolith and rocks, or Martian red dust and rocks. We are not a two plant species if those on Mars cannot survive without Earth. Resupply should be a luxury not a necessity. Tissue cultures, iguana, spirulina, mushrooms, shrimp, hydroponics, aeroponics, etc.
      What kind of modifications are possible for people in space? I think this can be greatly simplified if we engineer ourselves to be cold blooded or at least operate at twenty or thirty degrees Fahrenheit cooler, have our bodies make everything we now consider a vitamin, have bodies synthesize essential amino acids, from nitrogen in the air...
      We could even remove lots of junk DNA so it is a smaller target for radiation and more quickly repaired, and so cells can divide and heal faster. Probably best to end the relationship with gut bacteria. This solves a lot of sanitation issues and smell issues. It should also make recycling nutrients into fertilizer much easier. Delete the body odor genes. It becomes less urgent to do laundry, if no one stinks. You wash the clothing if it is actually dirty. Body oils can similarly be reduced to keep laundry cleaner. Similar things could be done to any animals that continue to be our food...even if they are only tissue cultures.

    • @ZebraFacts
      @ZebraFacts 4 ปีที่แล้ว

      @@CoolWorldsLab I'd love to see a deep look into how we can get private companies, governments, and investors together in a common path to moving into space and other planetary objects. I would also love to see and hear a discussion on why it seems no one is actively experimenting or testing some sort of artificial gravity system as NASA always claims that one of the main reasons they are having a problem seeing people on long voyages like to Mars is because the results of prolonged zero gravity on the body is so damaging.

  • @bigjermboktown6976
    @bigjermboktown6976 ปีที่แล้ว +1

    You are the very best at narrating on the context of these subjects. And simply make the best videos period

  • @oguzhan9424
    @oguzhan9424 2 ปีที่แล้ว

    Ive watched this when it was released and watched now every second again. You are a treat dr. Kipping. I am absolutly addicted to your videos.

  • @fleetwood3754
    @fleetwood3754 4 ปีที่แล้ว +145

    A superb presentation of rotational artificial gravity.

    • @unitedspacepirates9075
      @unitedspacepirates9075 4 ปีที่แล้ว +4

      Except no mention of splitting the current space station into three sections... a central zero g chamber, and two equally weighted crew chambers 1/2 km away on tethers to allow 1rpm to provide 1g for our astronauts to remain in space longer without health problems. Two rocks tied to a string (called a bola) demonstrates this principle.

    • @plinyelder8156
      @plinyelder8156 4 ปีที่แล้ว

      Fleetwood Mac

    • @cuscof2
      @cuscof2 4 ปีที่แล้ว +2

      @@unitedspacepirates9075 The structure of the ISS isn't nearly strong enough to support even 1/10 G. It's over $2800/kilo to launch to LEO, and most of it was launched when it was three times that price.
      If you want a rotating structure that doesn't tear itself to shreds in seconds you need to bring the building material from the Moon or grab a passing asteroid. We cannot boost that sort of mass from Earth's surface at this time.

    • @KermitFrazierdotcom
      @KermitFrazierdotcom 3 ปีที่แล้ว

      Do Hampster Wheels even WORK in S.P.A.C.E. ??? Anybody want to Science Fair one up to the ISS?

    • @garyrafiq9561
      @garyrafiq9561 3 ปีที่แล้ว

      @@unitedspacepirates9075 But if one or more astronauts from one crew chamber decide to visit the ones at the other chamber, the whole system will be thrown off balance unless compensation is made.

  • @abhishekmahajan3782
    @abhishekmahajan3782 3 ปีที่แล้ว +227

    If my teachers taught me about gravity and inertia with this clarity i would be in harvard this time lol

    • @markschroter2640
      @markschroter2640 3 ปีที่แล้ว +14

      I found the public education system failed me. The private one worked fairly well though. Tertiary education was actually better for me, but I digress; I agree that a good teacher in the math and science area is essential, In my middle high school years I had a rotten physics teacher and the whole class suffered, students that had a 95% average were in the 60% range. We tried to get rid of him but they would not do anything. We later found out he was dying, but that doesn't change anything, he should have been removed. The moral of my story is that in STEM education you can't baffle them with bullshit, you best stick to fact. Numbers matter.

    • @Ducatied
      @Ducatied 3 ปีที่แล้ว +11

      Doubt it. You spelled Harvard wrong.

    • @littlehhh4338
      @littlehhh4338 3 ปีที่แล้ว +5

      Blank Plate LMAOOOO

    • @abhishekmahajan3782
      @abhishekmahajan3782 3 ปีที่แล้ว +13

      I'm still in a top University in my country. English is not my first language . I'm still good enough :)

    • @marquisdemoo1792
      @marquisdemoo1792 3 ปีที่แล้ว +4

      @@abhishekmahajan3782 You are doing just fine; I'm appalling at languages. I might add my partner, who is not British, speaks and spells English way better than me.

  • @didrone4417
    @didrone4417 3 ปีที่แล้ว +3

    Dr.Kipping these are one of the best and most interesting videos and presentations I have ever seen,congratulations and please continue to upload more. Thank you very much 👍

  • @johnhetherington2667
    @johnhetherington2667 4 หลายเดือนก่อน +1

    Brilliant, very interesting and clearly explained in a way that everyone can begin to understand. If only all Teachers and Tutors could present to their audience like this. Thank you so much.

  • @Wordsmiths
    @Wordsmiths 5 ปีที่แล้ว +13

    Thank you for taking the time and trouble to make this excellent video. It's the best treatment of centripetal gravity I've ever seen, and this sort of thing really does need to be "seen" to be understood: not just in diagram form, but animated, in video form. Not only does it illustrate all the physics involved in centripetal gravity, but gives a great history of it, and an honest look at where things stand today (as of March 2019 anyway). The only thing missing was mention of the Gemini mission in which they tethered the Gemini capsule to their spent Agena booster and tried a tethered spin... but the spin rate was so low, the "gravity" thus generated was merely slightly-increased microgravity, and without any computer modeling of the experiment ahead of time, it's no surprise that the tether's unexpected elasticity and tendency to lend an "uncoiling" spin to the capsule (not to mention being so difficult to attach that the astronaut on EVA probably endangered his life to complete the job!), together with the super-cautious super-slow spin rate around the shared center of mass, meant the experiment was nearly useless except as a cautionary tale about materials engineering and affordance. ;-) So, yeah, maybe go ahead and leave that anecdote out. Never mind.
    This has become my standard reference video for introducing the theory and praxis of centripetal gravity. May we see a Gerald Driggers-esque research station soon! (see his book "Mars Close to Home" for interesting details)

    • @Bitterrootbackroads
      @Bitterrootbackroads 5 ปีที่แล้ว +2

      Nicolas Nelson -- Wasn't there an experiment conducted on a Shuttle mission with a tether to a satellite that BROKE during deployment? I thought it was represented as something like an antenna but maybe there was more to it?

    • @Wordsmiths
      @Wordsmiths 5 ปีที่แล้ว +2

      Bitterrootbackroads I would have to look it up, but iirc, that was an experiment in electrical conductivity, to see how feasible it might be to “harvest” electrical energy from the EM radiation in higher low-Earth orbit. The electrically-conductive tether sure worked: a little too well. It snapped because it overloaded and arced or sparked somehow, melting or vaporizing one point along the tether. But I do remember that it was NOT a centripetal-gravity experiment. (I wished it was!)

    • @carlbull8008
      @carlbull8008 3 ปีที่แล้ว

      I

  • @XelaJN
    @XelaJN 4 ปีที่แล้ว +111

    I wish I could be around in the future when solutions to these problems are created and people in the future look back at our syfy movies and either laugh at how far off we were or are amazed at how close we were to the real thing

    • @MrConformation
      @MrConformation 3 ปีที่แล้ว +4

      According to Steven hawking Humans are loosing their rein on this planet. We are destroying our ability to be the dominant species. Not sure anyone will be around long enough to experience adaptive living on teraformed planets or systems.

    • @kurtisengle6256
      @kurtisengle6256 3 ปีที่แล้ว

      War of the Worlds. 1897. Tripods walking around instead of wheels. VERY futuristic. Kind of like a gigantic steam powered metal tarantula. Wright Flyer 1903. Again, no wheels! Amazing how close Mr. Wells came to what actually happened 7 years later.

    • @tylermorris9196
      @tylermorris9196 3 ปีที่แล้ว

      It's almost more fun theorizing this stuff. Once they're actually built they'll be awesome, but sometimes the wonder is whats more exciting!

    • @Machiavelli2pc
      @Machiavelli2pc 3 ปีที่แล้ว +1

      @@tylermorris9196 but once you build them, more concepts and wondrous things may arise as a result! A feedback loop! Once we build these, we might wonder about Dyson spheres, then to maybe shkadov thrusters, then to moving and manipulating solar systems etc.

  • @FrankValchiria
    @FrankValchiria 3 ปีที่แล้ว +35

    im glad i got here

  • @bigcatloverelys6405
    @bigcatloverelys6405 2 ปีที่แล้ว

    Wow !!!! This is the type of content the world needs. Let’s educate ourselves and the next generations !

  • @robertbrown1577
    @robertbrown1577 4 ปีที่แล้ว +15

    Thank you for this amazing video! I've been looking for a comprehensive, in-depth analysis of the intricacies of centrifuges for a long long time. This is no exception.

  • @lukearts2954
    @lukearts2954 5 ปีที่แล้ว +7

    very balanced and comprehensive presentation! A lot of relevant information in a short time, while never getting the feeling that it is rushed or information is rammed in... The build-up of the comfort zone chart is perfect to make this understandable for a very broad public. Well done!

  • @FoodFanBoy7845
    @FoodFanBoy7845 ปีที่แล้ว +9

    Where were you when I took physics man?
    Seriously this was an amazing explanation, and I will be sharing it with others who struggled like I did.

  • @bobwebber8521
    @bobwebber8521 3 ปีที่แล้ว +3

    My head is now in a real spin.. Thank you for explaining these things I had no idea of.

    • @george40nelson4
      @george40nelson4 2 ปีที่แล้ว

      I got nauseated just looking at the drawings.LOL

  • @THX..1138
    @THX..1138 5 ปีที่แล้ว +45

    I like this video. If I were to pick the one thing that annoys me about NASA and people's space ambitions in general it's how we are seemingly ignoring the need for gravity. We have evolved our entire 3. whatever billion years in 1G. I am extremely skeptical we can live long term in much less or more than 1G. I mean our research in micro gravity seems to say it's really, really bad.Yet after doing zero research into the effects of long term low G we are planning crazy stuff like Mars colonies. Somehow the assumption without evidence seems to be zero G is totally bad, but 1/3 G should be fine....Before we blastoff on a SpaceX Starship to colonize Mars it would be nice to know if we can even live there.

    • @jackmack1061
      @jackmack1061 4 ปีที่แล้ว +5

      THX 1138 Regulations will be written in blood.

    • @lsborland
      @lsborland 4 ปีที่แล้ว +5

      If it can be identified through near-space observation of living organisms such as plants, which genes are responsible for better adaptation to near-zero gravity, it will be easier to identify which genes would allow us to be more suitable for those (or similar) conditions. Any creatures modified to excel in those conditions would however become less suitably adapted to life on Earth. For example, you could compare an Earth-based plant, to it's identical space-faring counterpart in order to see what (if any) genetic changes occur, and where those changes happen. Potential negatives could also be identified in this fashion.

    • @TheAmericanCatholic
      @TheAmericanCatholic 4 ปีที่แล้ว

      I think you can most likely live in Venus's gravity cause it is very close to earth 91% but that will still have some ploblems

    • @Mandorle21
      @Mandorle21 4 ปีที่แล้ว

      I can't believe you actually think this...

    • @erikjarandson5458
      @erikjarandson5458 4 ปีที่แล้ว

      Details. I prefer the Soviet style of space exploration. Put someone on top of a massive explosion, and cross your fingers. If they survive, that's great. Do it again. If they don't survive, there's always the next try. The really crazy thing? Soviet astronauts knew that this was the basic approach, and were actually free to back out (for real). Hardly any did. So, finding volunteers is apparently not a problem. It's totally feasible!
      Someone please figure out if I'm joking. I hope I am, but I'm not sure...

  • @johnwilliamson9982
    @johnwilliamson9982 5 ปีที่แล้ว +8

    Truly a joy to watch. This video needs to have some sort of TH-cam science award.

    • @CoolWorldsLab
      @CoolWorldsLab  5 ปีที่แล้ว +1

      Thanks John! How did you find our channel?

    • @johnwilliamson9982
      @johnwilliamson9982 5 ปีที่แล้ว +3

      Cool Worlds. I had been watching SpaceX themed videos and the algorithm seems to have brought the video into my feed. This was something I’d been wondering about for ages and this video discussed this comprehensively and in a way that a non science person could understand. Thanks again.

  • @FredLeavitt
    @FredLeavitt 3 ปีที่แล้ว +4

    I've always wondered what the coriolus effect was exactly. Now I know, thank you.

    • @slevinchannel7589
      @slevinchannel7589 2 ปีที่แล้ว +1

      Anti-Science is on the Rise.
      Please do something against this by asking me and others
      for some good Channel-Recommendations of Education
      and/or Science and also give me some.

  • @flyingfeline7110
    @flyingfeline7110 13 วันที่ผ่านมา

    Simplicity in explanation and a hypnotic and soothing voice!

  • @joeyjitzel5469
    @joeyjitzel5469 4 ปีที่แล้ว +6

    The math was way over my head but you tied it all together beautifully with your commentary, diagrams and charts. Great job. MORE please.

  • @Fox_Moulder
    @Fox_Moulder 4 ปีที่แล้ว +5

    For all the people that exist on this planet how can there have only been 8,900 that have liked this amazing video??? Maybe this is the reason why our forward progress is so slow :(

    • @bezaleeluk3696
      @bezaleeluk3696 4 ปีที่แล้ว +1

      because it is not informing us of anything new... or providing any workable solutions to the problems posed.

  • @karlhauser893
    @karlhauser893 2 ปีที่แล้ว +10

    The tether is the most interesting solution for me, since creating a long cable with a counterweight seems like it would be the cheapest and most efficient method. It probably wouldn't be difficult to built a 1km cable, and suddenly achieving 1g is in the realm of possibility. Avoiding a wobble, however, and finding cables that could be under tension for a long period of time with such heavy weights might pose a problem. Still, that design seems promising.

    • @fauzdaar6110
      @fauzdaar6110 ปีที่แล้ว +1

      But it would be very difficult to reach the massive object for something.

    • @stigcc
      @stigcc ปีที่แล้ว +3

      It would also be possible to start small and add pods when you need more space. Maybe using a meteor as counter weight that they can mine minerals from.

  • @helmutgirak8363
    @helmutgirak8363 2 ปีที่แล้ว +2

    As usual a gripping and very interesting presentation. Keep them coming thanks David

  • @TheDeadwoods-pl3yo
    @TheDeadwoods-pl3yo 4 ปีที่แล้ว +6

    This is inspirational and I think myself and the rest of the space enthusiast community would love to see such a demonstration on the ISS with in our life times. It could prove the technology and in turn open up the door to greater exploration of space for astronauts and inspire our greatest minds to think bigger and push further. Excellent presentation.

  •  5 ปีที่แล้ว +23

    Excellent video, very well explained. Not as simple as I expected !

  • @thedarkpassenger6696
    @thedarkpassenger6696 3 ปีที่แล้ว

    I am baffled at how anyone could click on this video knowing what it's about, sit through (or not) an exceptional presentation about the subject, and still manage to give it a thumbs down. Like wtf did they expect!? It's not clickbait.

  • @vids2see4me
    @vids2see4me 5 วันที่ผ่านมา

    Thank you. This topic crosses my mind from time to time and this was an enjoyable explanation of these various concepts. Nicely done.
    I've just recently discovered your channel and it has become a daily routine to watch at least a couple each day.🙏👍

  • @dandeeteeyem2170
    @dandeeteeyem2170 3 ปีที่แล้ว +10

    This is easily one of the most informative and fascinating videos I have ever seen. Please continue to make videos like this, and for any teachers out there - please consider taking notes from these guys or even showing these videos to your science students. Well done ♥️

  • @Grey_Wulfe
    @Grey_Wulfe 4 ปีที่แล้ว +10

    Love your videos sir. Your lengthy, detailed and vibrant explanation of the topic makes it easier for people to grasp the problem.

  • @Puckosar
    @Puckosar ปีที่แล้ว +4

    Excellent video! It's ironic though how instead of feeling joyful or optimistic after learning about how attainable this technology is like you'd expect I instead just feel angry that we're refusing to even try to achieve it. It's the same when I learn about nuclear power designs like LFTR's or other 4th gen reactors.

  • @ActorGottlieb
    @ActorGottlieb ปีที่แล้ว

    This has been one of the most educational and informative video of yours that I have seen so far. I enjoy all your content, but the complexities of artificial gravity had not really occurred to me, so I found myself captivated by your description of each of the factors involved. Thank you.

  • @KikiTay
    @KikiTay 5 ปีที่แล้ว +44

    Wow you answered all the possible questions I had and more! Very well done! Very very well done!

    • @ufos22
      @ufos22 4 ปีที่แล้ว

      STUPID ! th-cam.com/video/BEWz4SXfyCQ/w-d-xo.html

    • @plinyelder8156
      @plinyelder8156 4 ปีที่แล้ว

      Kiki Tay Really? For the spaceship you’re building?? Lmao

  • @rpbajb
    @rpbajb 4 ปีที่แล้ว +10

    I found out about this channel from John Michael Godier. I usually play these videos in the background while doing other tasks, but THIS video with its formulaic approach and diagrams demanded my complete attention. I watched it twice, then subscribed. Good stuff.

  • @bludragonproject9677
    @bludragonproject9677 ปีที่แล้ว

    An absolutely brilliant and thought provoking piece. As a Reader and writer of Science Fiction (not SciFi) I found myself attempting to figure out how to reliably compensate for the differing effects involved in either O'Neill Cylinders or Stanford Tori. It's a fantastically mind boggling exercise!😃 Thank you!

    • @edumazieri
      @edumazieri ปีที่แล้ว

      I totally get why you would want to distinguish between what you call SciFi and what you call Science Fiction but won't that be a bit tricky given that one is just a shortened version of another? Seems like the kind of language fight you're never gonna finish fighting. Maybe using "hard scifi" works better for that purpose?

  • @jensphiliphohmann1876
    @jensphiliphohmann1876 4 หลายเดือนก่อน +1

    A really great and probably comprehensive explanation of the issues of artificial gravity.

  • @ballsyau1974
    @ballsyau1974 5 ปีที่แล้ว +16

    Loved it. I have a heart problem and take medication that stops me from controlling blood flow around my body. If I put my hands In the air the blood drains to my core. If I turn to fast I will pass out. It first it was unbearable. As time went on, I lined to control my reaction to this. I can drive a car and turn the corner without falling out of my seat. This was very hard at the start. I feel a bit like the Coriolis affect you mentioned

    • @daffyf6829
      @daffyf6829 4 ปีที่แล้ว

      i was thinking about that during the canal sickness section. People are very adaptable in that way.

  • @deancyrus1
    @deancyrus1 5 ปีที่แล้ว +14

    Hard to understand the technical stuff but the graphics help. I watched the whole thing, i was so interested. Great video. In answer to your question, i really do think we should be experimenting on the iss

  • @avayu2289
    @avayu2289 ปีที่แล้ว

    Thank you for the logistics behind gravitational forces. Kudos to all those who have the intuitive genius and dedication to keep reinventing existential options and keeping us up right!

  • @harlansmith5653
    @harlansmith5653 3 ปีที่แล้ว +3

    Outstanding presentation! Gravitation forces must be part of our habitat consideration for long space flight.
    Thanks for your efforts!

  • @AussieSaintJohn
    @AussieSaintJohn 5 ปีที่แล้ว +36

    Wow, excellent production, not that I understood it all but it made me realise that it's a very complex issue and that we are a long way from risking taking long trips in space... even relatively short trips to other planets in the solar system are very risky...

    • @CoolWorldsLab
      @CoolWorldsLab  5 ปีที่แล้ว +8

      Dan Under space is not for the faint of heart....

    • @richardcaruso7727
      @richardcaruso7727 4 ปีที่แล้ว +2

      Well not in all cases, John, search engine HAVOC. Nasa says that just 37 miles above Venus there is Earth - like gravity with material friendly temperatures of 70 to 80 degrees. So a gondola attached to the underside of an inflatable dirigible would require no artificial gravity as one walks from one section of the gondola to another.
      And without fear of your drink, or dinner, sliding off the table while you are temporarily in the restroom.
      All of this natural-gravity is possible because mainly of Venus's diameter (about 7,600 miles compared to Earth's 7,900 miles) Very little oxygen there, it is mostly Nitrogen & a little bit of sulfuric acid dust that the HAVOC dirigibles propellers would navigate at high altitude with - but remember not quite in space - so that's why I'm bullish on the whole HAVOC CONCEPT and there are other advantages over Mars also. In short - whatever bone loss occurs while traveling to Venus would be much less than going to Mars. Furthermore - more importantly - once at that approximate 37 mile altitude propeller orbit around Venus the astronauts & scientist would start regaining what calcium they lost in the 3or 4 month travel they just completed. And gain without having to do 2 hours of exercise every day!

    • @URProductions
      @URProductions 4 ปีที่แล้ว +1

      Fuck the risk, man. Let's just do it!

    • @URProductions
      @URProductions 4 ปีที่แล้ว +1

      'Merica!

    • @vdarknessfalls6704
      @vdarknessfalls6704 4 ปีที่แล้ว +1

      @@richardcaruso7727 Fun fact, our earth's core is made of Plasma, and that's where gravity comes from.

  • @craigmooring2091
    @craigmooring2091 5 ปีที่แล้ว +13

    Thank you. This was a very helpful exposition of factors that have to be considered.

  • @victoriannecastle
    @victoriannecastle 3 ปีที่แล้ว +40

    20% of mass in just a week?! Damn. That's a lot

    • @Joshua_N-A
      @Joshua_N-A 2 ปีที่แล้ว +1

      Wonder how much one astronaut eat per day.

  • @DGaryGrady
    @DGaryGrady 2 ปีที่แล้ว +1

    As others have said, this is excellent. I have two minor quibbles: First, the equivalence of gravitation and linear acceleration applies only for volumes too small to experience detectable tidal force in the case of gravity (vertical stretching owing the dependence of force on distance and horizontal squeezing as a consequence of the convergence of the force vectors toward the center of attraction. (That is, the gravity force vectors are not parallel.) But this is incredibly picky.
    Second and more seriously, the loud background music is annoying to at least some of us, and it interferes with intelligibility for those with hearing problems. I don't understand the current TH-cam fad for this. I prefer no background music at all.
    But again, on the whole this is really excellent and the best thing I've seen on the subject.

  • @pruephillip1338
    @pruephillip1338 4 ปีที่แล้ว +12

    Best I have seen on the topic. Well done. Superb in fact.

  • @WillArtie
    @WillArtie 5 ปีที่แล้ว +7

    Great summary & vid! So much info - and you went into EVERYTHING I have wanted to know about - well done. Should be required watching for all students interested or studying such things. Well done! Cheers & love from Sydney, Australia. EDIT: and only 4.3K views?! I think, in time, this number will greatly increase....

  • @dermankaya2685
    @dermankaya2685 2 ปีที่แล้ว +1

    I have been working on a project and this vide helped me a lot. Thanks

  • @mikelepage6287
    @mikelepage6287 2 ปีที่แล้ว +2

    Great video! Especially appreciated how you covered all the constraints of the rpm vs radius diagram.

  • @levik8892
    @levik8892 5 ปีที่แล้ว +59

    This guy has just smashed his science exam

    • @gireeshdashhare8221
      @gireeshdashhare8221 4 ปีที่แล้ว +3

      Lol,he liked every comment except yours. Wonder what he didn't like.

    • @iteerrex8166
      @iteerrex8166 4 ปีที่แล้ว +3

      @@gireeshdashhare8221 Maybe because he is Prof of physics. Calling him a good student is disrespecting.

  • @StarGazerJim
    @StarGazerJim 5 ปีที่แล้ว +47

    Unless we can figure out how to rapidly terraform a planet or a moon, I think the O’Neill Cylinder is the most likely form of off-earth habitation for mass amounts of people.

    • @Joshua_N-A
      @Joshua_N-A 2 ปีที่แล้ว

      The largest asteroid may contain enough resources needed to build an O'Neill. Any asteroid that poses threat to Earth should be mined.

  • @randythomas1189
    @randythomas1189 2 ปีที่แล้ว

    Yes by all means continue in this format. Thank you

  • @macswad
    @macswad ปีที่แล้ว

    Wow! What a great video, the best I've seen on this topic. Well researched & beautifully explained at just the right tempo. - Brilliant.

  • @blackbeardkharkongor8830
    @blackbeardkharkongor8830 4 ปีที่แล้ว +5

    This is the best idea of making artificial gravity, scientists must apply this theory on the space station to make astronaut comfortable and stay safe and longer in space.thank you.

    • @cuscof2
      @cuscof2 4 ปีที่แล้ว

      Unfortunately the ISS doesn't have the structural strength to support rotation. It was discussed very early in the planning phase, not enough rotation to actually cause noticeable effects but at least enough that water would go down and it would make planning air circulation easier. The cost for boosting sufficient mass (I-beams and such) to keep the structure from flexing was prohibitive. I think it's more likely that we'll find ways to allow the human body to cope with weightlessness.

    • @nicholaswion846
      @nicholaswion846 4 ปีที่แล้ว

      We are nowhere close to being able to actually apply any of this yet. What needs to be done, is to begin Gravity Simulation EXPERIMENTS, in order to determine what the real practical realities actually are.

  • @AmericaVoice
    @AmericaVoice 3 ปีที่แล้ว +6

    I ABSOUTLY agree with others how this was put in normal medium smart people like me and I'm only currently a undergraduate and understood it 100%! Thank you for making this! I love your channel!

    • @north6502
      @north6502 2 ปีที่แล้ว

      An undergrad who doesn’t know how to use commas?

    • @AmericaVoice
      @AmericaVoice 2 ปีที่แล้ว

      @@north6502 a undergraduate who has grammar as a weakness! I am not perfect. I have had that issue the moment before I was in grade school. If I proof read what I type a few times, it's much better typically. If it is a policy or something professional, I would have others proof read before it's public! On here, it's a comment that I reacted immediately too and didn't stress out about it! I am not perfect. Every person on this earth has aomething they are good and lacking in. I am not writing an essay or writing something for professional reasons! I was also in the hospital on pain medication as well when that comment was written! 😉

  • @robertobruselas3952
    @robertobruselas3952 3 ปีที่แล้ว +2

    Congrats guys! Amazing artificial gravity presentation! Highly recommended.

  • @DaveWhiteInYoFace
    @DaveWhiteInYoFace 3 ปีที่แล้ว +2

    Man, I REALLY love your videos.

  • @Paint2D_
    @Paint2D_ 5 ปีที่แล้ว +149

    I really liked this video.
    Any future space station that does not at least have a place to experiment with spin gravity and the effects of lower or higher gravity is in my opinion a bad Idea.

    • @northeden8661
      @northeden8661 5 ปีที่แล้ว +5

      Howdi. I think the first few stations will be the experiments, themselves.

    • @shermluge
      @shermluge 5 ปีที่แล้ว +3

      Honestly I wish they could find a way to implement an add on to the current international space station as a test..

    • @kurkbrewington7015
      @kurkbrewington7015 5 ปีที่แล้ว +1

      Tell Elon that !!! Please !!!

    • @Raz.C
      @Raz.C 5 ปีที่แล้ว

      Spinning CAN be used to simulate gravity, but NOT in the way shown above in 2001.
      I wrote a dedicated comment on this, so I won't go into too much detail here, but if you want to see how rotation can correctly be used to simulate gravity in a microgravity/ zero gravity environment, please follow the link below to a movie (the ONLY movie not to fall victim to hollywood's mistaken assumptions about how forces/ bodies at rest/ in motion all work) and watch it from about 9 minutes and 20 seconds in. This method would work in real life, though if I've done the calculations correctly, the floors (the central axis of the ship) would need to be angled at a minimum of 13 degrees for the 'floors' to seem straight when spinning.
      th-cam.com/video/M3THzazQEoo/w-d-xo.html

    • @theguyfromsaturn
      @theguyfromsaturn 5 ปีที่แล้ว +1

      Definitely. We really need to start scaling up our stations to include spin gravity.

  • @pushing2throttles
    @pushing2throttles 3 ปีที่แล้ว +3

    Most thorough analysis I've seen. Well done. Thank you for using science, math, and physics and not just some random thought experiment.

  • @antman674
    @antman674 2 ปีที่แล้ว

    Awesome video. Just watched The Martian again and was wondering why we havent already built these things. This is exactly what I was looking for. Its channels like this that really make youtube an awesome place.

  • @KaleOrton
    @KaleOrton ปีที่แล้ว

    Such an eloquent and beautiful channel. Thank you. 🙏

  • @kraftrad7840
    @kraftrad7840 4 ปีที่แล้ว +9

    Great documentation, history, studies and mathemetics connected - perfect!

  • @samuelboga3055
    @samuelboga3055 5 ปีที่แล้ว +4

    Outstanding presentation. One of the best content creators on TH-cam.

  • @victoraugust9549
    @victoraugust9549 2 ปีที่แล้ว

    The best video and analysis i have seen on the subject. Helped me validate some of my own calculations on the subject.

  • @melconin
    @melconin ปีที่แล้ว

    Outstanding presentation. Best I've seen. It is soooo disappointing that we are spending billions to go to Mars without any idea whether we could ever live at less than 1g.

  • @wunkskorks2623
    @wunkskorks2623 3 ปีที่แล้ว +6

    Great video. I have a difficult time wrapping my head around physics and this presentation allowed me to have a solid layman’s grasp on the subject.

  • @jasonplant5432
    @jasonplant5432 4 ปีที่แล้ว +38

    This is important thank you.

    • @smainebelhadi1193
      @smainebelhadi1193 4 ปีที่แล้ว +1

      Agree. But seems to be forgotten by NASA, and space x.

    • @masterdementer
      @masterdementer 3 ปีที่แล้ว

      @@smainebelhadi1193 yea exactly

  • @blackriverbootsmaeducation
    @blackriverbootsmaeducation 2 ปีที่แล้ว

    100/100 Awesome presentation. We are grateful to find your channel. Keep up the amazing work!

  • @scotthowerton142
    @scotthowerton142 3 ปีที่แล้ว +6

    Excellent presentation. The only thing I recommend is to keep working on artificial gravity concepts. The answer is there, someone, and will figure it out.

  • @brettd5884
    @brettd5884 4 ปีที่แล้ว +10

    Well done! I've never seen a presentation that attempted to place limits on the size/speed of centrifugal structures. The video of the T-handle wrench flipping was also enlightening (stability).