18:16 The example for how spin gravity works that I've always used is "put some water into a bucket, put that bucket on a string and spin it around. If you spin it fast enough, the water will stay in the bucket".
or just take something like a pill bottle, spin it with your arm with the bottom always facing outward, the pills will stay at the bottom until motion stops most easy-to-test way i know rn
Spin gravity in space has never made sense to me. While yes, here on earth we have gravity and yes if we spin water in a bucket the water stays on the inner surface. However, that happens because there is the existing gravity of earth where particles push on each other. However, in deep space, do we still rely on the weak gravity of remote stellar bodies? Does this spin gravity exist if there is no atmosphere contained within? What exactly would push objects down that are not touching the outer wall outward? On earth we are on the outside edge of a sphere. What keeps us from flying off into space? Is it the constant speed and rotation of earth traveling across the galaxy? If earth suddenly stopped all movement , would gravity cease?
Can't agree enough with other commenters: you're due way, _way_ more subs... said it before, but I'll say it again: Isaac's work's the perfect combination of imagination, science and tech... often challenging, but always awe-inspiring... if a dumb-ass like me can be engaged, then this channel, and how it's presented, is an algorithm in itself... thanks again Arthur, you're so appreciated mate...👍🏴
Thank you for keeping Douglas Adams' space quote alive. If ever you run out of videos to post, you could have a second (or fifth) career narrating the Hitchhiker's Guide.
Not sure I agree that 24/7 light is going to be a problem. I worked in Antarctica during the summer for 5 months when it was 24/7 sunlight. It's really not a problem. You're outside or in offices with windows during the day. Then you come inside or go further into the station during the night time to eat, have some drinks with friends, watch a movie, etc. That's mostly in rooms that have no windows. Then you go to sleep in a room that also has no window. You're body just sort of assumes the sun has gone down. When you wake up and go outside again it's sunny. Sun cycle wise it felt really similar to being at home.
Your "collar" connecting a rotating torus with a stationary hub does not need to be pressurized. You can have a transfer pod that moves to flip from the inner ring to catch the outer ring, like a ball bearing. Then the pod can go to an elevator spoke and slide down to the habitat. Only the pod is pressurized. The air in the hub and the air in the habitat don't mix. The interface is empty. Of course, when you open the pod some transfer occurs, but you could stop that if you need isolation.
transfer pod is not necessary, you make an unpresurized hollow shaft for moving cargo and personell, and a hole on the hub to another unpressurized section on the spinning wheel, below that, a pressure chamer, but it will be messy considering the need for lubrication, thermal shock, and continous rotation. personally I'd be partial to a hammer style station for research, have a couple labs tied by a high tensile strength tether, and set them to spin like a bola, then vary the length of the tether to make experiments at different gravity settings. when you stop an experiment, you wind up the labs, stop their spinning and tug them back in.
This is actually a good approach, and I'd imagine something like that would get used on huge rotating habitats. (The idea was used in The Expanse at both Tycho Station and on the Nauvoo/Behemoth.) It's not practical for smaller habitats or most spacecraft likely to appear in the next several decades (at least). Still, those short passages wouldn't have much air to lose, anyway. Also, as Isaac said, all stations leak, so while you'd want to minimize it, some leakage would probably just get written off as a cost of doing business
@c0sine_theta But if you use a transporter to beam from a microgravity environment to a rotating one, momentum is conserved, and you'd slam into the wall or ceiling when you arrived, quite possibly hard enough to injure or kill you, or even punch a hole to the outside. This is called the Niven Effect. The lack of consideration for this phenomenon is one of the most egregious scientific flaws in *_Star Trek._*
@@arcadiaberger9204The Star Trek transporter controls look pretty complicated. There must be a reason it isn't a push button or voice activated like almost everything else, and needs at least one human operator in the loop. And the ships are supposed to have inertial dampeners, which should adjust momentum. Maybe that's why transport isn't instant (like in I Dream Of Jeanie.) So I'm not convinced that Star Trek ignores momentum, even though it is never mentioned explicitly. But it seems like a missed opportunity for fun effects.
My intuition is that plants should be more vigorous under spin gravity. The lesser gravity at their tops will aid in capillary action, making it easier for them to transport water and nutrients from their roots to their leaves, with less support structure needed to hold those leaves up, leading to bigger healthier canopies.
I think that people might build a special chamber that simulates Earth on space stations. It would be a large space with fans that blow air in random directions, and a domed ceiling that would imitate natural sunlight that shifts 15 degrees per hour.
But there is no 15 degree per hour drift; the Earth is flat and there is a huge glass dome over the pizza with an ocean above the glass!!! Just kidding!!
@@CountryLifestyle2023The Flat Earth Society has members all over the globe. The original intent was to get people to question their own beliefs. Why do you think the Earth isn't flat when the horizon looks pretty flat? Do you trust the words of others more than your own eyes? It's a fair question, but unfortunately, too many people seem to take it to mean that there is a conspiracy obscuring the fact that Earth is flat. (I blame religion using the same logic to justify belief in what they're selling: That there must be a conspiracy of atheists obscuring the obvious "facts".) How do you know that Earth isn't flat? I know it isn't, but how do _you_ know? Everyone agreeing about it doesn't make it so, people agree on a lot of things that aren't true.
Enclosing future stations, ships, and habitats to effectively have no windows makes the most sense. That would be best for safety, radiation mitigation, and helping everyone maintain good sleep schedules. But yeah, we'd definitely still want a few observation decks. :) On the subject of early adaptation, I imagine people heading out to our first settlements will likely need to do a lot of prep work. Getting all their immunizations up to date, getting all their teeth fixed, getting health issues taken care of, etc. I'm sure there will be medical care even on the first outpost, but if folks can avoid all but major issues before hand that would likely be ideal.
at ~12:34 you reminded me of the extra Q & A I attended after the regular Q & A after a presentation by Gerard K. O'Neill at a local college while on book tour publicizing his The High Frontier: Human Colonies In Space. He said one of his grad students had "done the number" and concluded that one of his colonies with a large enough focusing mirror would be fine a light month out in the beginning of the Oort Cloud.
I guess that's technically true but needing like 20.18 km^2 for just a single kW is pretty insane. At 10g/m^2(some light aluminum foil) that's 201.8t or 201.8 kg/W. Not great, but especially for postbiologicals this is still probably servicable & no need for fuel imports as long as the sun shines & u aren't shaded.
Hey, I'm kinda early! Thank you for your videos Isaac, your videos really take me out of the real world for just a little bit, and it's magic. Thanks again.
Two things I want to bring up. 1. Why does no one talk about megamaid from spaceballs when talking about superweapons? 2. Would a space motorcycle be viable? Like a rocket that you hold onto the side of.
1. "Truly, a weapon to surpass Metal Gear!" 2. This is the closest thing I ever heard of when talking about space motorcycles: en.wikipedia.org/wiki/Marquardt_Space_Sled. I found it when browsing Atomic Rockets, which I heartily recommend if you haven't heard of it.
@@eddieford9373 of course, I think this device was a mockup for ground tests, since there's no shielding or propellant tanks on it. Still, makes you think what could've happened if the MOL went through further development.
Megamaid might work if it uses gravity devices instead of a vacuum, particularly if Druidia is a small planet (explaining the air shield). A one-person unenclosed spacecraft is certainly possible. Space bikers would be forever getting lost in space and colliding with stations, and probably not all that fun to ride, since they'd likely have fairly low thrust motors.
This was an especially pleasant episode to listen to. Just kind of wholesome and inspiring somehow. Good to listen to when preparing for bed, to have fun new ideas to think about!
It could be the case that some developmental process in human embryology requires our gravity very specifically to determine where to divide certain stem lines. Raise gravity too much, and your eyes are in your mouth. Lower it too much and you get one eye on the top of your head. You might establish your colony only to find nobody can produce living offspring, and it might not be immediately obvious the gravity is to blame.
The issue is more severe than even that, frog Embryos raised shielded from the earths magnetic field were deformed There is a lot we don't know, leaving earth is a very big step
24:23 There can be a big difference between transient spinning and constant spinning. For example, we have very little issue doing a quick pirouette, but if you spin in place for a little while and then turn your head sideways you can experience very noticeable effects.
That happens when you spin fast (5 + RPM). That effect disappears for most people when you go slower than 2 RPM. I would link a few studies, but YT would delete this comment.
I found a rare science error, or perhaps an ambiguously interpretable statement, I don't think I've seen one in your episodes before - when a flame gets hotter, the amount of infrared light does go up, but it grows slower than more energetic light. At any frequency, the amount of energy will always be higher from a hotter source.
FOR THE ALGORITHM!!!! I just found a video of yours last night about megastructures, and now I'm going to watch all of the rest. Excellent work, these videos are amazing!
Rather than moving clocks, calendars, etc to base 10, a more effective option in the long run would be to move everything to either base 12 or hexadecimal. Of course, making that transition would be much, much more difficult, but would only need to be done once.
Regarding the spinning airtight seal, you could have a two-part station with shuttles going between the two. Like the clean room train Tom Scott did a video on. Then you wouldn't need a seal constantly wearing out.
@@lordcirthReplaced with multiple seals that are constantly in on-and-off use, a great way to accumulate wear. Esp with piloting mistakes. All active-use items wear, no matter what they are or how they are used.
@@thekaxmax I was thinking it would be a train system, so not much room for error; and you can depressurize a shuttle and swap the seals a lot easier than you can replace the seals on a 200m+ rotating ring that you can't easily depressurize.
@@lordcirth but the rotating seals can be very smooth hard metal or ceramic of a very close fit with an ionic liquid lubricant & liquid sealant so there's little wear, so you don't need to replace it more than once every half-decade or so. Ionic liquids don't evaporate in vacuum. There are advantages both ways. The shuttle/train is much easier but requires more maintenance and replacement.
I'm going to be real honest, I think the real issue to over come in a Hab isn't the Revolutions but rather the gravitation differences between feet and head.
6:30 The Old Faithful Inn in Yellowstone was either the first, or one of the first hotels built west of the Mississippi River to be built with electricity in mind. The hotel was built in 3 phases with the first phase being built in 1903. Two wings were added in the 20's and 30's, and are much more modern hotel rooms. The oldest part of the hotel was built in an era when the vast majority of people lived in places without electricity, so most of the guests in the hotel would be experiencing electric lighting for the very first time. And lighting levels in the hotel are very low compared to what we are used to today. But it more closely matches what you would find in the typical hotel of the late 19th Century. The "newer" sections of the hotel are much more brightly lit and are, frankly, much more comfortable. So yea, we are used to having plenty of light on demand, but 125 years ago this was very much not the case.
The "hammer hab" made me think of the pirate ship ride at the amusement park and the hammer hab would be much cooler if those were pirate ships. A pirate base...
I keep wondering why rotational habitats on planetary surfaces are almost completely overlooked. It’s always planetary surface gravity vs centrifugal ”gravity” on orbital facilities. A 1g habitat on Mars, for example, would be a simple upscaling of machines that have existed for centuries on Earth-1. A car moving on a banked circular track or 2. A large-radius centrifuge. Both vastly easier to engineer than an orbital rotational habitat, especially given that humans have millennia of experience in engineering both small and mind-bogglingly enormous structures, both fixed and moving, in a gravitational environment. Why no love?
immagine industrial process made at a controlled gravity.... aluminium-lead alloy, deck 10, purify molten metals by gravity, deck 151, high purity semiconductor crystals on deck 0...
Lets start mining and production on some suitable asteroid, with the right rotation possibly, then build a ring around it and expand if need be using the materials it offers. Then another one, asteroid belt, Psyche(!), then kuiper belt
09:26 For me, yellower lights makes me feel unwell; only untinted white light feels right for me (though slightly bluer tints do feel less worse than anything with a hint of yellow).
The trick is to create a diurnal cycle people can live with. That’s why more people talk about Mars with it’s 24.6 hour day than Venus with its 235 day day…
Might the spin nausea be "teched away"? If a microchip could send a signal to the brain that compensated for the spin nausea, then each ship or habitat could broadcast a signal with instructions for their specific spin rate.
well thats bioforming and outside the scope here. Buuuuut we have built rotating hab's on earth, operating at greater then 1 g, and you can actually adjust to the effects of higher RPM's as far as nausa goes But the coriolis effect creates other problems, walking can be un-predictable leading to people just walking in 90° motions either towards/away from the center of rotation or perpendicular to it, throwing things becomes very difficult and changing the weight of an arm by carrying something can easily throw the person off balance. And that might actually be beyond the scope of implants, and there might be other issues, as you would have fairly diffrent forces acting to push your blood and body downwards between your head and your toes.
Probably, but you need some kind of implant that is connected with the nerve from the inner ear, or just the brain region that process the signal (like a cohlear implant for hearing ) , and a autonomous device seems easyest to make(also you don't want someone else to make you feel nausea hacking the signal) , so you don't need external data (like you suggested) to adjust to the specific rotating speed, but only some internal sensors (like gyroscopes and accelerometers).
Sorry for the mostly unrelated questions, but if anyone knows, it’s probably someone watching this video. I’m trying to track down an old sci-fi book but I can’t remember the name of the book or the author. It’s about a guy that escapes the world getting destroyed by a flood, in a spaceship with a sex robot. He travels to 3 worlds, one where everyone is naked except for a mask, another where everyone has a tail and they give him a tail, and the third I forget. Finally, he goes to discover the creators of all life, giant beetles that accidentally created life by exploring worlds and pooping there and their microbes evolved. Has anyone here ever read this and can point me in the right direction? I don’t believe it’s a famous author at all. Someone obscure.
As for LED lighting; single temperature (5k - 6k) is often used to replace incandescent, fluorescent, high pressure sodium or metal halide, however I have found that at even high brightness levels is often less effective in certain situations. It seems we functionally see better with multiple frequency or wider band light sources.
Thanks to my swivel chair, I work in a spin habitat, even though my work desk is rectangle. Just did a spin for no reason here at work while I listen to this through my earbuds
Perhaps in the future most of mankind will live in space stations or starships. The idea of living on a planetary surface shackled by gravity and exposed to weather and geological conditions will seem strange and frightening.
The only noticeable difference between spin gravity on a sufficiently large and slow spinning space habitat and earth is the formation of vortex in fluids.
@TheEvilmooseofdoom I admit it's an assumption, but it's based on the fact that gravity is essentially just acceleration, and we would be experiencing acceleration do to the constantly changing vector. So it should be the same as being on earth but without the coriolis effect.
No air gaps within space based designs CAN be done, however, it takes both real effort as well as exacting engineering tolerances. While not cheap at first, this would be worth it, and key, in fact, to proper space based designs.
15:25 there's interesting videos of animals undergoing zero G experiments in aircraft. While this is obviously very short term, some animals (dogs) weren't bothered while others (mice) were hitting the treadmill hard enough to create their own gravity and cats' instinct to land on their feet was confused.
I’ve enjoyed your video’s for some time now, thank you for all the insightful and might I say inspirational information. I’ve a question for you and your crew. What are your opinions on the numerous videos of suspect air bubbles, Bride of Frankenstein hair and cgi wire work among numerous other anomalies presented to the public as taking place in space. I’m not expecting an answer to this not so perplexing quandary. So please don’t jeopardize your job or professional standing to address these concerns. I do so like your videos and want you guys to be able to keep producing more.
Rewind to the 3:27 minute marker! Somewhere between your lovely accent and my drunken cuss-like-a sailor ears heard you say "content with a chatGPT *hump*bot with cocktails" LOL 😂
Looking forward to 9/28. Favorite topic with my favorite book shoutout and your previous video on this topic had built entirely new and better dreams on the old Star Trek-based ones you shattered. :P
There has been some research on plants growing in "lower gravity" using a device called a clinostat, that averages the pull of gravity by spinning the plants on one or two axis, IIRC, plants could grow on the equivalent of a 0G setting, and the Chineese experiment that grew some plants on the moon seems to support this too (ok, the plants got only to sprout, but...)
In the future, in space, you won't be surprised someone doesn't know about something you're doing over on the other side of the galaxy or universe, instead you will be shocked if they know anything about it.
My first expectation of living in space would be to actually live IN space, not on a planet. All of the resources would be launched up into orbit where we will use them to construct habitats. Ground bases are just for establishing a beach-head for mining, unless we really find a world perfectly suited for terraforming... like a cool Venus, perhaps. Now, let's watch.
Commenting for the algorithm, Isaac Arthur deserves 10 million subs
I did thumbs up for the algorithm
Engagement 🤖
You are right, surprisingly low amount
100 million
Blessed be the Ali G Rhythm, Ah Man. 😜
18:16 The example for how spin gravity works that I've always used is "put some water into a bucket, put that bucket on a string and spin it around. If you spin it fast enough, the water will stay in the bucket".
Washing machine on the centrifuge mode ...
or just take something like a pill bottle, spin it with your arm with the bottom always facing outward, the pills will stay at the bottom until motion stops
most easy-to-test way i know rn
Or take a plastic bottle, fill it halfway with water, and spin it around
Or....
Spin gravity in space has never made sense to me. While yes, here on earth we have gravity and yes if we spin water in a bucket the water stays on the inner surface. However, that happens because there is the existing gravity of earth where particles push on each other. However, in deep space, do we still rely on the weak gravity of remote stellar bodies? Does this spin gravity exist if there is no atmosphere contained within? What exactly would push objects down that are not touching the outer wall outward? On earth we are on the outside edge of a sphere. What keeps us from flying off into space? Is it the constant speed and rotation of earth traveling across the galaxy? If earth suddenly stopped all movement , would gravity cease?
Can't agree enough with other commenters: you're due way, _way_ more subs... said it before, but I'll say it again: Isaac's work's the perfect combination of imagination, science and tech... often challenging, but always awe-inspiring... if a dumb-ass like me can be engaged, then this channel, and how it's presented, is an algorithm in itself... thanks again Arthur, you're so appreciated mate...👍🏴
Same for me.
He’d have more subs if he got a professional sounding narrator and a good editor for the scripts.
@@PhysicsPolice Nah, he's fine as is...🏴👍
@@glasgowgallus247 no it’s got much potential than this rambling, unlistenable trash.
The unique accent is part of the draw
Thank you for keeping Douglas Adams' space quote alive. If ever you run out of videos to post, you could have a second (or fifth) career narrating the Hitchhiker's Guide.
Don’t panic and carry a towel! 😂😂
Towel day is coming up in a few months (5/25)...(25/5) if you're not American ^.^ @@a.mathis9454
Not sure I agree that 24/7 light is going to be a problem. I worked in Antarctica during the summer for 5 months when it was 24/7 sunlight. It's really not a problem. You're outside or in offices with windows during the day. Then you come inside or go further into the station during the night time to eat, have some drinks with friends, watch a movie, etc. That's mostly in rooms that have no windows. Then you go to sleep in a room that also has no window. You're body just sort of assumes the sun has gone down. When you wake up and go outside again it's sunny. Sun cycle wise it felt really similar to being at home.
Thanks for your insight. This probably made working the "night shift" enjoyable.
Intersting.
A new SFIA video every week always lifts my spirit.
And then spins it around, presumably. Up to 2rpm.
Superfragilistic Isaac Arthur
Your "collar" connecting a rotating torus with a stationary hub does not need to be pressurized. You can have a transfer pod that moves to flip from the inner ring to catch the outer ring, like a ball bearing. Then the pod can go to an elevator spoke and slide down to the habitat. Only the pod is pressurized. The air in the hub and the air in the habitat don't mix. The interface is empty. Of course, when you open the pod some transfer occurs, but you could stop that if you need isolation.
transfer pod is not necessary, you make an unpresurized hollow shaft for moving cargo and personell, and a hole on the hub to another unpressurized section on the spinning wheel, below that, a pressure chamer, but it will be messy considering the need for lubrication, thermal shock, and continous rotation.
personally I'd be partial to a hammer style station for research, have a couple labs tied by a high tensile strength tether, and set them to spin like a bola, then vary the length of the tether to make experiments at different gravity settings. when you stop an experiment, you wind up the labs, stop their spinning and tug them back in.
@@partciudgam8478 But if you forget to stop the spin before rewinding the tethers you'll be in for a ride :0===
This is actually a good approach, and I'd imagine something like that would get used on huge rotating habitats.
(The idea was used in The Expanse at both Tycho Station and on the Nauvoo/Behemoth.)
It's not practical for smaller habitats or most spacecraft likely to appear in the next several decades (at least).
Still, those short passages wouldn't have much air to lose, anyway. Also, as Isaac said, all stations leak, so while you'd want to minimize it, some leakage would probably just get written off as a cost of doing business
@c0sine_theta But if you use a transporter to beam from a microgravity environment to a rotating one, momentum is conserved, and you'd slam into the wall or ceiling when you arrived, quite possibly hard enough to injure or kill you, or even punch a hole to the outside. This is called the Niven Effect.
The lack of consideration for this phenomenon is one of the most egregious scientific flaws in *_Star Trek._*
@@arcadiaberger9204The Star Trek transporter controls look pretty complicated. There must be a reason it isn't a push button or voice activated like almost everything else, and needs at least one human operator in the loop.
And the ships are supposed to have inertial dampeners, which should adjust momentum. Maybe that's why transport isn't instant (like in I Dream Of Jeanie.)
So I'm not convinced that Star Trek ignores momentum, even though it is never mentioned explicitly. But it seems like a missed opportunity for fun effects.
I want to live in space, LETS GO LIFE EXTENSION TECHNOLOGY!
I know right. Doing physics in my 0-g habitat would be nice.
It would put a whole new spin on receiving a life sentence though lol
Turm limits for congress first. Dusty old farts will abuse it
I’ve been trying to convince my telomeres to stop degrading… no success yet :/
@@Ag3nt0fCha0sThey might have to change the system
I was going to create a space habitat -- but then things got really busy at work.
I was going to create a space habitat but then I took an arrow to my knee.
@@jimmywrangles Over the years, arrows to knees have hindered a great deal of progress. My sympathies.
My intuition is that plants should be more vigorous under spin gravity. The lesser gravity at their tops will aid in capillary action, making it easier for them to transport water and nutrients from their roots to their leaves, with less support structure needed to hold those leaves up, leading to bigger healthier canopies.
I think that people might build a special chamber that simulates Earth on space stations. It would be a large space with fans that blow air in random directions, and a domed ceiling that would imitate natural sunlight that shifts 15 degrees per hour.
We don’t need that, blue sky that dims in the evening.
But there is no 15 degree per hour drift; the Earth is flat and there is a huge glass dome over the pizza with an ocean above the glass!!!
Just kidding!!
In a centrifuge so you don’t suffer bone atrophy
@andrew12bravo21 Man I still can't believe ppl think the earth is flat.... 😅😅 . Than they tell others they are blind and sheeple lol
@@CountryLifestyle2023The Flat Earth Society has members all over the globe.
The original intent was to get people to question their own beliefs. Why do you think the Earth isn't flat when the horizon looks pretty flat? Do you trust the words of others more than your own eyes?
It's a fair question, but unfortunately, too many people seem to take it to mean that there is a conspiracy obscuring the fact that Earth is flat. (I blame religion using the same logic to justify belief in what they're selling: That there must be a conspiracy of atheists obscuring the obvious "facts".)
How do you know that Earth isn't flat? I know it isn't, but how do _you_ know? Everyone agreeing about it doesn't make it so, people agree on a lot of things that aren't true.
Another great video by Isaac Arthur, a highlight of my week
Enclosing future stations, ships, and habitats to effectively have no windows makes the most sense. That would be best for safety, radiation mitigation, and helping everyone maintain good sleep schedules. But yeah, we'd definitely still want a few observation decks. :) On the subject of early adaptation, I imagine people heading out to our first settlements will likely need to do a lot of prep work. Getting all their immunizations up to date, getting all their teeth fixed, getting health issues taken care of, etc. I'm sure there will be medical care even on the first outpost, but if folks can avoid all but major issues before hand that would likely be ideal.
Hands down, my favorite subject you do.
I look forward to Thursdays for this show. I'm also a nebula subscriber but I watch it here to help the channel views.
at ~12:34 you reminded me of the extra Q & A I attended after the regular Q & A after a presentation by Gerard K. O'Neill at a local college while on book tour publicizing his The High Frontier: Human Colonies In Space. He said one of his grad students had "done the number" and concluded that one of his colonies with a large enough focusing mirror would be fine a light month out in the beginning of the Oort Cloud.
I guess that's technically true but needing like 20.18 km^2 for just a single kW is pretty insane. At 10g/m^2(some light aluminum foil) that's 201.8t or 201.8 kg/W. Not great, but especially for postbiologicals this is still probably servicable & no need for fuel imports as long as the sun shines & u aren't shaded.
Hey, I'm kinda early!
Thank you for your videos Isaac, your videos really take me out of the real world for just a little bit, and it's magic. Thanks again.
Two things I want to bring up.
1. Why does no one talk about megamaid from spaceballs when talking about superweapons?
2. Would a space motorcycle be viable? Like a rocket that you hold onto the side of.
1. "Truly, a weapon to surpass Metal Gear!"
2. This is the closest thing I ever heard of when talking about space motorcycles: en.wikipedia.org/wiki/Marquardt_Space_Sled. I found it when browsing Atomic Rockets, which I heartily recommend if you haven't heard of it.
@SugarcaneFuturist i don't think I'd trust something like that. Looks sketchy.
@@eddieford9373 of course, I think this device was a mockup for ground tests, since there's no shielding or propellant tanks on it. Still, makes you think what could've happened if the MOL went through further development.
Megamaid might work if it uses gravity devices instead of a vacuum, particularly if Druidia is a small planet (explaining the air shield).
A one-person unenclosed spacecraft is certainly possible. Space bikers would be forever getting lost in space and colliding with stations, and probably not all that fun to ride, since they'd likely have fairly low thrust motors.
Astronauts already strap themselves to rockets, tho it is mostly attached to their back.
My very favorite channel. Love all the Douglas Adams references. My favorite "trilogy". Your amazing my man. Please never stop these videos.
Thanks! Will do!
Isaac! I hope life is treating you well and you’re getting good sleep!
This was an especially pleasant episode to listen to. Just kind of wholesome and inspiring somehow. Good to listen to when preparing for bed, to have fun new ideas to think about!
Thanks for listening
It could be the case that some developmental process in human embryology requires our gravity very specifically to determine where to divide certain stem lines. Raise gravity too much, and your eyes are in your mouth. Lower it too much and you get one eye on the top of your head. You might establish your colony only to find nobody can produce living offspring, and it might not be immediately obvious the gravity is to blame.
The issue is more severe than even that, frog Embryos raised shielded from the earths magnetic field were deformed
There is a lot we don't know, leaving earth is a very big step
24:23 There can be a big difference between transient spinning and constant spinning. For example, we have very little issue doing a quick pirouette, but if you spin in place for a little while and then turn your head sideways you can experience very noticeable effects.
That happens when you spin fast (5 + RPM). That effect disappears for most people when you go slower than 2 RPM. I would link a few studies, but YT would delete this comment.
@@TraditionalAnglican But is the threshold the same for all species? I suspect it probably isn't...
I suggested this topic 2 years ago happy to see the in-depth analysis.
Always good to see a new post
Opening with a Douglas Adams quote. 👍
Love the hitchhiker's guide to the galaxy reference
Loved the Hitchhikers guide reference! Thanks for another great episode.
I found a rare science error, or perhaps an ambiguously interpretable statement, I don't think I've seen one in your episodes before - when a flame gets hotter, the amount of infrared light does go up, but it grows slower than more energetic light. At any frequency, the amount of energy will always be higher from a hotter source.
Correct.
Love the subtle nod to The Hitchhikers Guide to the Galaxy.
Hey guys im Jonah from Jamaica,l 🇯🇲 out here im called Birdbeak, im a long time veiwer and i wonder wherever my fellow Arthurians come from
I love it when I learn something new. Plus looking at space and dreaming.
Same day as getting Starfield. Always look forward to your vids, quality as usual
30:35 I get along SO well with my neighbors. I've lived here 15ish years, and I've never met them
FOR THE ALGORITHM!!!! I just found a video of yours last night about megastructures, and now I'm going to watch all of the rest.
Excellent work, these videos are amazing!
Another fun Ar-Thursday episode.
Rather than moving clocks, calendars, etc to base 10, a more effective option in the long run would be to move everything to either base 12 or hexadecimal. Of course, making that transition would be much, much more difficult, but would only need to be done once.
Regarding the spinning airtight seal, you could have a two-part station with shuttles going between the two. Like the clean room train Tom Scott did a video on. Then you wouldn't need a seal constantly wearing out.
Shuttles also need seals, they just avoiding sliding seals.
@@thekaxmax Yes, that's why I said you wouldn't need a seal that's constantly wearing.
@@lordcirthReplaced with multiple seals that are constantly in on-and-off use, a great way to accumulate wear. Esp with piloting mistakes. All active-use items wear, no matter what they are or how they are used.
@@thekaxmax I was thinking it would be a train system, so not much room for error; and you can depressurize a shuttle and swap the seals a lot easier than you can replace the seals on a 200m+ rotating ring that you can't easily depressurize.
@@lordcirth but the rotating seals can be very smooth hard metal or ceramic of a very close fit with an ionic liquid lubricant & liquid sealant so there's little wear, so you don't need to replace it more than once every half-decade or so. Ionic liquids don't evaporate in vacuum.
There are advantages both ways. The shuttle/train is much easier but requires more maintenance and replacement.
I love the nods to the hitchhiker's guide to the galaxy
New Isaac Arthur video right before bedtime, gonna be a pleasant evening and sweet, imaginative dreams!
Hey dude, just came back because I remembered you from about three years ago. Love your stuff.
Yay! The one i e been waiting for!
Yessssss!
Indeed!
Hitchhiker's guide quote was awesome.
I'm going to be real honest, I think the real issue to over come in a Hab isn't the Revolutions but rather the gravitation differences between feet and head.
6:30 The Old Faithful Inn in Yellowstone was either the first, or one of the first hotels built west of the Mississippi River to be built with electricity in mind.
The hotel was built in 3 phases with the first phase being built in 1903. Two wings were added in the 20's and 30's, and are much more modern hotel rooms.
The oldest part of the hotel was built in an era when the vast majority of people lived in places without electricity, so most of the guests in the hotel would be experiencing electric lighting for the very first time.
And lighting levels in the hotel are very low compared to what we are used to today. But it more closely matches what you would find in the typical hotel of the late 19th Century.
The "newer" sections of the hotel are much more brightly lit and are, frankly, much more comfortable.
So yea, we are used to having plenty of light on demand, but 125 years ago this was very much not the case.
I love this channel! I really would love it if he collaborated and made his own scifi youtube show!
a small thing i just noticed (not that it really matters for my enjoyment of the show, but still): at about 2:30, the timestamps listed are all 00:00.
I also noticed that
The "hammer hab" made me think of the pirate ship ride at the amusement park and the hammer hab would be much cooler if those were pirate ships. A pirate base...
I keep wondering why rotational habitats on planetary surfaces are almost completely overlooked. It’s always planetary surface gravity vs centrifugal ”gravity” on orbital facilities. A 1g habitat on Mars, for example, would be a simple upscaling of machines that have existed for centuries on Earth-1. A car moving on a banked circular track or 2. A large-radius centrifuge. Both vastly easier to engineer than an orbital rotational habitat, especially given that humans have millennia of experience in engineering both small and mind-bogglingly enormous structures, both fixed and moving, in a gravitational environment. Why no love?
A spinning habitat on Mars would be destroyed by the sand storms...the NASA rovers keep dying thanks to the dust getting in the nooks and crannies.
there could even be higher gravity floor on a spinning space station
for harder training or something
immagine industrial process made at a controlled gravity.... aluminium-lead alloy, deck 10, purify molten metals by gravity, deck 151, high purity semiconductor crystals on deck 0...
Thanks for all you do Isaac. Amazing video.
Another great well-thought-out episode to enjoy.....gets cookies and drink 😊
Nice nod to Hitchhiker's Guide to the Galaxy.
Lets start mining and production on some suitable asteroid, with the right rotation possibly, then build a ring around it and expand if need be using the materials it offers. Then another one, asteroid belt, Psyche(!), then kuiper belt
Can you make an episode about the culture of space trucking?
That is my future job in a next life so I'm interested lol.
09:26 For me, yellower lights makes me feel unwell; only untinted white light feels right for me (though slightly bluer tints do feel less worse than anything with a hint of yellow).
The trick is to create a diurnal cycle people can live with. That’s why more people talk about Mars with it’s 24.6 hour day than Venus with its 235 day day…
Isaac, I wonder whom you've quoted more often over the years: Douglas Adams or Carl Sagan.
Hard to say, probably a wider number of quotes by Adam by I repeat Sagan more often with Pale Blue dDot and billions and billions :)
Might the spin nausea be "teched away"? If a microchip could send a signal to the brain that compensated for the spin nausea, then each ship or habitat could broadcast a signal with instructions for their specific spin rate.
well thats bioforming and outside the scope here.
Buuuuut we have built rotating hab's on earth, operating at greater then 1 g, and you can actually adjust to the effects of higher RPM's as far as nausa goes
But the coriolis effect creates other problems, walking can be un-predictable leading to people just walking in 90° motions either towards/away from the center of rotation or perpendicular to it, throwing things becomes very difficult and changing the weight of an arm by carrying something can easily throw the person off balance.
And that might actually be beyond the scope of implants, and there might be other issues, as you would have fairly diffrent forces acting to push your blood and body downwards between your head and your toes.
@@AnonymousAnarchist2nah, we can give a drug that numbs the inner ear, but you might have trouble walking.
Probably, but you need some kind of implant that is connected with the nerve from the inner ear, or just the brain region that process the signal (like a cohlear implant for hearing ) , and a autonomous device seems easyest to make(also you don't want someone else to make you feel nausea hacking the signal) , so you don't need external data (like you suggested) to adjust to the specific rotating speed, but only some internal sensors (like gyroscopes and accelerometers).
you deserve way more subs. love every video of yours. me and my gf watch them while chilling and when trying to fall asleep every night.
Lol, the alien falling out at the bar table got me 😂
Sorry for the mostly unrelated questions, but if anyone knows, it’s probably someone watching this video. I’m trying to track down an old sci-fi book but I can’t remember the name of the book or the author.
It’s about a guy that escapes the world getting destroyed by a flood, in a spaceship with a sex robot. He travels to 3 worlds, one where everyone is naked except for a mask, another where everyone has a tail and they give him a tail, and the third I forget. Finally, he goes to discover the creators of all life, giant beetles that accidentally created life by exploring worlds and pooping there and their microbes evolved.
Has anyone here ever read this and can point me in the right direction? I don’t believe it’s a famous author at all. Someone obscure.
Great episode. Been subscribed for a long time... Still one of my favorite channels!
Great video Isaac! All the upcoming videos sound like they’ll be great too!
Interesting, indeed.
My favorite primitive rotating space station is two rocket bodies and a cable.
Thanks for continuing to put out new material lol, haven't even come close to listening to everything you guys have made
You really have top notch content!! I enjoy these so much, thank you for your hard work. You can tell your passionate about space and science 😉
Best day of the week thanks to your videos ❤ thanks for another great one . Gives me something to ponder until next week
As for LED lighting; single temperature (5k - 6k) is often used to replace incandescent, fluorescent, high pressure sodium or metal halide, however I have found that at even high brightness levels is often less effective in certain situations. It seems we functionally see better with multiple frequency or wider band light sources.
Thanks to my swivel chair, I work in a spin habitat, even though my work desk is rectangle. Just did a spin for no reason here at work while I listen to this through my earbuds
I wanna go to Mars
Drink beers in Martian bars
And as I stare at the stars
Eat pickles from Martian jars
I love the Douglas Adams reference at the beginning
Perhaps in the future most of mankind will live in space stations or starships. The idea of living on a planetary surface shackled by gravity and exposed to weather and geological conditions will seem strange and frightening.
All your videos are too good. Please never stop.
My new favorite episode! Thanks Isaac!
Extra sleep.... your optimism is adorable.
The only noticeable difference between spin gravity on a sufficiently large and slow spinning space habitat and earth is the formation of vortex in fluids.
We hope. I think you're correct, but the truth is we've never tried it!
@TheEvilmooseofdoom I admit it's an assumption, but it's based on the fact that gravity is essentially just acceleration, and we would be experiencing acceleration do to the constantly changing vector. So it should be the same as being on earth but without the coriolis effect.
No air gaps within space based designs CAN be done, however, it takes both real effort as well as exacting engineering tolerances.
While not cheap at first, this would be worth it, and key, in fact, to proper space based designs.
I hope my son has first hand experience in this someday.
Smartest show around on space and sci fi type topics ❤
15:25 there's interesting videos of animals undergoing zero G experiments in aircraft.
While this is obviously very short term, some animals (dogs) weren't bothered while others (mice) were hitting the treadmill hard enough to create their own gravity and cats' instinct to land on their feet was confused.
I’ve enjoyed your video’s for some time now, thank you for all the insightful and might I say inspirational information.
I’ve a question for you and your crew. What are your opinions on the numerous videos of suspect air bubbles, Bride of Frankenstein hair and cgi wire work among numerous other anomalies presented to the public as taking place in space.
I’m not expecting an answer to this not so perplexing quandary.
So please don’t jeopardize your job or professional standing to address these concerns. I do so like your videos and want you guys to be able to keep producing more.
I love your reviews! I was always a science fiction reader, but you make me want to try mystery. I love your enthusiasm. 🥰
I've been rocking you since like 2018 you do amazing job
21:30 Sitting on a low chair like a sports or race car should help.
Fascinating stuff! Keep up the good work!
Great video! Just wanted to say take a look at your table of contents
Issac Arthur deserves 10million subs.
Nice Hitchhiker's Guide reference, good sir.
Just a amazing channel. Thanks .
17:25 - So "coyote time" has some basis in actual physics? Wild!
0:39 Space is big?
".. you may think it's a long way down the road to the chemist's, but that's just peanuts to space."
Isaac play starfield your gonna love it!
Rewind to the 3:27 minute marker!
Somewhere between your lovely accent and my drunken cuss-like-a sailor ears heard you say "content with a chatGPT *hump*bot with cocktails" LOL
😂
table of contents indicates that all sections would be played at once lol. Left it on default, didn't ya Isaac? XD
Looking forward to 9/28. Favorite topic with my favorite book shoutout and your previous video on this topic had built entirely new and better dreams on the old Star Trek-based ones you shattered. :P
🎶“I don’t believe in de space
De blue on de sky is just paint
De stars in de night, Dey just sparkely lights
No
I don believe in de space” 🎶
There has been some research on plants growing in "lower gravity" using a device called a clinostat, that averages the pull of gravity by spinning the plants on one or two axis, IIRC, plants could grow on the equivalent of a 0G setting, and the Chineese experiment that grew some plants on the moon seems to support this too (ok, the plants got only to sprout, but...)
In the future, in space, you won't be surprised someone doesn't know about something you're doing over on the other side of the galaxy or universe, instead you will be shocked if they know anything about it.
Not if it's possible to create a wormhole network that links all those stars together in a kind of rapid transit system.
@@joshuarichardson6529 indeed maybe not!
My first expectation of living in space would be to actually live IN space, not on a planet. All of the resources would be launched up into orbit where we will use them to construct habitats. Ground bases are just for establishing a beach-head for mining, unless we really find a world perfectly suited for terraforming... like a cool Venus, perhaps. Now, let's watch.