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...👍🏴
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?
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.
So the solution is just to have a regular light either by mirrors or by artificial lighting and have no windows on your bedrooms. Simple and easy. Now, it might be different on a farming hab with plants and animals. Many animals will likely have the same solution, burrowing underground or whatnot at "night" but it might really mess with some plants. Then again I KNOW some plants don't care about that so we can just use those instead.
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.
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.
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.
Unless the greater amount of nutrients and water oversaturates them and makes them sick instead like how zinc is necessary for humans but double the necessary amount will make you vomit, cramp, etc.
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.
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.
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!
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.
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.
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.
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!
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.
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
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.
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
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.
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.
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…
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.
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'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.
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.
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’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.
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...
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
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...
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...)
One of the things that always confused me in physics is "how does a station know that it is rotating considering it is motionless in it's own reference frame?" This always implied to me that there was some universal "grid" of what was considered motionless. This also applied to special relativity where time slows down for an object that moves faster and yet, from the pov of the fast moving object, it is not moving at all, everything else is.
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. 😜
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
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?
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
A new SFIA video every week always lifts my spirit.
And then spins it around, presumably. Up to 2rpm.
Superfragilistic Isaac Arthur
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.
So the solution is just to have a regular light either by mirrors or by artificial lighting and have no windows on your bedrooms. Simple and easy. Now, it might be different on a farming hab with plants and animals. Many animals will likely have the same solution, burrowing underground or whatnot at "night" but it might really mess with some plants. Then again I KNOW some plants don't care about that so we can just use those instead.
cool insight. what were you doing there? unless it's top secret and Kurt Russell was involved
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 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
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!
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.
Unless the greater amount of nutrients and water oversaturates them and makes them sick instead like how zinc is necessary for humans but double the necessary amount will make you vomit, cramp, etc.
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.
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.
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.
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.
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
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...
Loved the Hitchhikers guide reference! Thanks for another great episode.
Isaac! I hope life is treating you well and you’re getting good sleep!
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.
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.
I love the nods to the hitchhiker's guide to the galaxy
I suggested this topic 2 years ago happy to see the in-depth analysis.
Love the subtle nod to The Hitchhikers Guide to the Galaxy.
Always good to see a new post
Yay! The one i e been waiting for!
New Isaac Arthur video right before bedtime, gonna be a pleasant evening and sweet, imaginative dreams!
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!
Love the hitchhiker's guide to the galaxy reference
Same day as getting Starfield. Always look forward to your vids, quality as usual
I love it when I learn something new. Plus looking at space and dreaming.
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 this channel! I really would love it if he collaborated and made his own scifi youtube show!
Hey dude, just came back because I remembered you from about three years ago. Love your stuff.
Another fun Ar-Thursday episode.
Opening with a Douglas Adams quote. 👍
30:35 I get along SO well with my neighbors. I've lived here 15ish years, and I've never met them
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.
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
Thanks for all you do Isaac. Amazing video.
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
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.
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 😉
Thanks for continuing to put out new material lol, haven't even come close to listening to everything you guys have made
My new favorite episode! Thanks Isaac!
Smartest show around on space and sci fi type topics ❤
All your videos are too good. Please never stop.
Great episode. Been subscribed for a long time... Still one of my favorite channels!
Hitchhiker's guide quote was awesome.
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
Great video Isaac! All the upcoming videos sound like they’ll be great too!
I love the Douglas Adams reference at the beginning
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
Just a amazing channel. Thanks .
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.
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.
AWESOME AS ALWAYS
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…
I've been rocking you since like 2018 you do amazing job
Issac Arthur deserves 10million subs.
Extra sleep.... your optimism is adorable.
Best day of the week thanks to your videos ❤ thanks for another great one . Gives me something to ponder until next week
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.
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
Fascinating video. Thanks.
Fascinating stuff! Keep up the good work!
Nice nod to Hitchhiker's Guide to the Galaxy.
Another great episode
Thanks for the episode!
I love your reviews! I was always a science fiction reader, but you make me want to try mystery. I love your enthusiasm. 🥰
Really should have millions of subs
Interesting, indeed.
My favorite primitive rotating space station is two rocket bodies and a cable.
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.
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.
Love your videos!
table of contents indicates that all sections would be played at once lol. Left it on default, didn't ya Isaac? XD
Love your channel cant wait for 1mil
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.
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’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.
Love your work.
Great video! Just wanted to say take a look at your table of contents
Nice Hitchhiker's Guide reference, good sir.
Nebula is really great, and the biggest benefit is you don't have the TH-cam algorithm to worry about
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...
Love this content
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
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...
Isaac play starfield your gonna love it!
17:25 - So "coyote time" has some basis in actual physics? Wild!
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...)
My friend, Ford said the same thing on how big space is. He should know, he came from a small planet somewhere in the vicinity of Betelgeuse.
Another great well-thought-out episode to enjoy.....gets cookies and drink 😊
The timestamps for sections shown in the video intro are all 00:00
One of the things that always confused me in physics is "how does a station know that it is rotating considering it is motionless in it's own reference frame?" This always implied to me that there was some universal "grid" of what was considered motionless. This also applied to special relativity where time slows down for an object that moves faster and yet, from the pov of the fast moving object, it is not moving at all, everything else is.
I love your references
Yessssss!
Indeed!
I hope my son has first hand experience in this someday.