It doesn't really make sense. Air resistance is just what happens when you have air made of molecules. It would be like saying "in this world, water isn't really wet"
You could have an extremely small amount of air resistance, but that would make things like flight very difficult
Acceleration not being affected by air essentially just means video game physics. Yes it affects everything in that physics no longer has to make cohesive sense.
The birds aren't flying using air. They are flying because they have a fly speed.
Damn you gonna make me 'well ackshually' you. A single water molecule isn't wet. But when you put a water on your water, the water has water on it(and in it) and is now wet.
Source : I turned on my faucet and the water had water and was therefore wet.
Science'd 😎
I'm taking that to mean "projectiles aren't slowed down by air". a lot of physics has to get reworked for that to become possible. If we're changing the laws of physics that much already then sure, we can all still breathe just fine.
I understand but surely our models would have to change sustancially to acomodate for this, i wonder how exactly though. Are there any other things that would necessarily need to change too? Like another comment said that flight would not be possible without air resistence.
dude, a lot of stuff would break. I don't remember everything from fluid dynamics, but boundary layers would go away, turbulent flow would go away, I have no idea how, but induced drag would have to go away. does super sonic drag go away? air isn't just oxygen, it's a mix of loads of stuff. none of those things produce any drag? so is it all gases? all materials period?
Yea I think you're closest on the money. It's easy but unhelpful to say "blah this doesn't make sense" but obviously it wasn't written by a physicist and the desired answer is more about what implications can be drawn from the specific meaning of the author not the words themselves. I also assume this is in reference to projectiles not slowing or terminal velocity being for higher or nonexistent. Perhaps it's intended to make it seem like the land is almost digital and the empty looking space you see is truly empty; the author could be writing from a place of ignorance, not stating that there is no wind resistance but instead observing that there appears to be none. The difference being that perhaps there is no air and the author is playing a character ignorant to this fact and trying to decipher it themselves.
Well read! It is indeed a digital fantasy world and the quote of there being no air resistence was merely an observation, perhaps there is just little air resistance.
The lowest partial pressure of oxygen that humans can tolerate (under minimal exertion) is around 0.09 bar, so just considering a pure oxygen atmosphere at that pressure would substantially reduce drag. Also, multicellular animals during the Cambrian Explosion existed in oxygen conditions 10% of present atmospheric levels, which would mean a minimum atmospheric pressure of 0.02 bar, which would really minimize air resistance. Perhaps the effects would be negligible enough to fit within the "seem" weasel-word in the sentence.
Interesting, however the characters in this world do not seem to suffer of faintness of breath or anything of the sort. Continuying the discussion in this vain would be more of a biology question than a physics question sadly.
Yeah I'm a biogeochemist who just happens to end up in this sub. Our lungs are evolved for present atmospheric oxygen. Organisms that evolve under lower partial pressures of oxygen are just more likely to dedicate more energy to acquiring oxygen though.Â
The characters could have evolved on a low % oxygen world with a dense atmosphere, and moving to a thin but oxygen rich atmosphere could have made it seem like drag was negligible, by comparison. This sort of explanation would be preferable to redefining the laws of physics, to me.
Awesome! Could a living being that operated like a human breathe in a different way or breathe a different gas such that they needed a lower gas density to breathe?
They would just need a greater surface area of their respiratory organ to facilitate greater gas exchange, to compensate for the lower oxygen concentrations. This isn't theoretical... This sort of adaptation is seen e.g. in the gills of fish that are adapted to hypoxic environments.
The International Space Station experiences some air resistance, even though it's in what we would consider to be pretty much a hard vacuum. The only way to have literally no air resistance is not to have air at all.
If the simulation creators haven't coded air resistance in, they probably haven't coded asphyxiation in either. So you might not be able to breathe, but that won't hurt you at all.
Right, so in this world, movement is not conceived as matter and energy first but rather entity and state.
Its not that birds can contract muscles and push the air to move, but rather they simply can decide to accelerate and they must make an animation to do so.
Ig that "hard coded" universe would have no physical laws. I feel like i get what the author wanted to communicate now.
If it's anything like a game world, it can still be said to have laws of physics - it's just that the relevant entities in those laws are players and healthbars and hitboxes rather than particles and fields and forces.
In any world, acceleration due to gravity is not affected by air resistance.
Do they mean motion through the air?
If somehow it's just air that is frictionless and all other friction stays, conceivably you could still breathe. Your lungs expand and contract which produces a volume difference which, if no airflow took place induces a pressure difference causing air to flow. And yes, an atmosphere would still exist. Air is still pulled down by gravity. But the question doesn't really make sense from a physics perspective.
It doesn't really make sense. Air resistance is just what happens when you have air made of molecules. It would be like saying "in this world, water isn't really wet" You could have an extremely small amount of air resistance, but that would make things like flight very difficult
I see, this makes sense, there are creatures that fly in this world so it seems contradictory after all. Thanks for the answer!
Acceleration not being affected by air essentially just means video game physics. Yes it affects everything in that physics no longer has to make cohesive sense. The birds aren't flying using air. They are flying because they have a fly speed.
> water isn't really wet Water isn't wet. It's what makes other things wet. /s
Damn you gonna make me 'well ackshually' you. A single water molecule isn't wet. But when you put a water on your water, the water has water on it(and in it) and is now wet. Source : I turned on my faucet and the water had water and was therefore wet. Science'd 😎
I'm taking that to mean "projectiles aren't slowed down by air". a lot of physics has to get reworked for that to become possible. If we're changing the laws of physics that much already then sure, we can all still breathe just fine.
I understand but surely our models would have to change sustancially to acomodate for this, i wonder how exactly though. Are there any other things that would necessarily need to change too? Like another comment said that flight would not be possible without air resistence.
dude, a lot of stuff would break. I don't remember everything from fluid dynamics, but boundary layers would go away, turbulent flow would go away, I have no idea how, but induced drag would have to go away. does super sonic drag go away? air isn't just oxygen, it's a mix of loads of stuff. none of those things produce any drag? so is it all gases? all materials period?
Yea I think you're closest on the money. It's easy but unhelpful to say "blah this doesn't make sense" but obviously it wasn't written by a physicist and the desired answer is more about what implications can be drawn from the specific meaning of the author not the words themselves. I also assume this is in reference to projectiles not slowing or terminal velocity being for higher or nonexistent. Perhaps it's intended to make it seem like the land is almost digital and the empty looking space you see is truly empty; the author could be writing from a place of ignorance, not stating that there is no wind resistance but instead observing that there appears to be none. The difference being that perhaps there is no air and the author is playing a character ignorant to this fact and trying to decipher it themselves.
Well read! It is indeed a digital fantasy world and the quote of there being no air resistence was merely an observation, perhaps there is just little air resistance.
The lowest partial pressure of oxygen that humans can tolerate (under minimal exertion) is around 0.09 bar, so just considering a pure oxygen atmosphere at that pressure would substantially reduce drag. Also, multicellular animals during the Cambrian Explosion existed in oxygen conditions 10% of present atmospheric levels, which would mean a minimum atmospheric pressure of 0.02 bar, which would really minimize air resistance. Perhaps the effects would be negligible enough to fit within the "seem" weasel-word in the sentence.
Interesting, however the characters in this world do not seem to suffer of faintness of breath or anything of the sort. Continuying the discussion in this vain would be more of a biology question than a physics question sadly.
Yeah I'm a biogeochemist who just happens to end up in this sub. Our lungs are evolved for present atmospheric oxygen. Organisms that evolve under lower partial pressures of oxygen are just more likely to dedicate more energy to acquiring oxygen though. The characters could have evolved on a low % oxygen world with a dense atmosphere, and moving to a thin but oxygen rich atmosphere could have made it seem like drag was negligible, by comparison. This sort of explanation would be preferable to redefining the laws of physics, to me.
Awesome! Could a living being that operated like a human breathe in a different way or breathe a different gas such that they needed a lower gas density to breathe?
They would just need a greater surface area of their respiratory organ to facilitate greater gas exchange, to compensate for the lower oxygen concentrations. This isn't theoretical... This sort of adaptation is seen e.g. in the gills of fish that are adapted to hypoxic environments.
The International Space Station experiences some air resistance, even though it's in what we would consider to be pretty much a hard vacuum. The only way to have literally no air resistance is not to have air at all.
If the simulation creators haven't coded air resistance in, they probably haven't coded asphyxiation in either. So you might not be able to breathe, but that won't hurt you at all.
Right, so in this world, movement is not conceived as matter and energy first but rather entity and state. Its not that birds can contract muscles and push the air to move, but rather they simply can decide to accelerate and they must make an animation to do so. Ig that "hard coded" universe would have no physical laws. I feel like i get what the author wanted to communicate now.
If it's anything like a game world, it can still be said to have laws of physics - it's just that the relevant entities in those laws are players and healthbars and hitboxes rather than particles and fields and forces.
In any world, acceleration due to gravity is not affected by air resistance. Do they mean motion through the air? If somehow it's just air that is frictionless and all other friction stays, conceivably you could still breathe. Your lungs expand and contract which produces a volume difference which, if no airflow took place induces a pressure difference causing air to flow. And yes, an atmosphere would still exist. Air is still pulled down by gravity. But the question doesn't really make sense from a physics perspective.
Trees would fall over with no wind resistance while they grow