I have a question (for the astronomers/astrophysicists, as well as biologists out there). Gravity affects density. That can be seen only (?) on the large scale (neutron stars, pulsars, black holes etc). This affect is brought about through pressure.
Following this train of thought, if someone removed gravity from the equation, there would still be pressure acting. Which means that pressure is indirectly related to gravity and density.
Also, it is known that as one reaches higher altitude, the air pressure gets weaker, meaning that at in orbit it is practically zero (or very close to, hence microgravity). This being said, what is the O2 density in an orbiting shuttle or the ISS? Is it lesser than 1 ATM?
2
Enjoy being online again!
Welcome to the community of good people who base their values on evidence and appreciate civil discourse - the social network you will enjoy.Create your free account
4 comments
Feel free to reply to any comment by clicking the "Reply" button.
Lukian tell me, do you have other jerks like magicwatch in this group?
VineetHonkan
Level 7
Apr 16, 2019
0
Personal attacks serve religions well. They do not serve science.
If gravity did not existed then, molecularly, matter would not coalesce together. Without gravity stars would not ignite (there would be no pressure).
As for the ISS question: Cabin pressure nominal range: T = 14.2 to 14.9 psi (1 ATM = 14.7psi) (the pressure is maintained artificially)
ref: [wsn.spaceflight.esa.int]
Lukian
Level 8
Apr 8, 2019
1
...ok, with that bit of information, and noting that people float around inside these vehicles due to microgravity, wouldn't they be gasping for air as I'm sure the pressure/density is not the same as on Earth?
@VineetHonkan Like an airplane, the ISS is a pressurized sealed container.
Microgravity is an illusion. There is a sizeable amount of gravity pulling the ISS towards the earth but since it's in orbit, the ISS is continually falling towards the horizon of the planet. In physics, all objects inside a falling box fall at the same rate i.e. they feel no gravity i.e. weightless.
@VineetHonkan go back to school and learn something , or were you home taught ?
@VineetHonkan maybe this will answer your question: According to the specs (last page of link above) the Cabin air velocity: 10 to 40 feet per minute which means the air in the ISS is in constant movement (even breathing causes air currents).
@magicwatch Please, there is no stupid question. We are all here to learn. What is logical to one is not to another.
@Lukian point taken . apologies
Recent Visitors 28
Photos 424 More
Posted by starwatcher-alThe occultation of Mars on the 7th.
Posted by starwatcher-alThe occultation of Mars on the 7th.
Posted by starwatcher-alSolar minimum was in 2019 so the sun is ramping up in flares, spots and prominences.
Posted by starwatcher-alI missed the early phases of the eclipse but the clouds mostly left during totality. All in all a great eclipse. Next one is Nov. 8-22
Posted by starwatcher-alI missed the early phases of the eclipse but the clouds mostly left during totality. All in all a great eclipse. Next one is Nov. 8-22
Posted by RobecologyFor those following the JWST.
Posted by AnonySchmoose The post-launch set-up of the new James Webb telescope has gone very well.
Posted by HumanistJohnImages taken with Stellina (80 mm): M33 Triangulum Galaxy M1 Crab Nebula NGC281 Pacman Nebula in Cassiopeia NGC 6992 Veil Nebula in Cygnus
Posted by HumanistJohnImages taken with Stellina (80 mm): M33 Triangulum Galaxy M1 Crab Nebula NGC281 Pacman Nebula in Cassiopeia NGC 6992 Veil Nebula in Cygnus
Posted by HumanistJohnImages taken with Stellina (80 mm): M33 Triangulum Galaxy M1 Crab Nebula NGC281 Pacman Nebula in Cassiopeia NGC 6992 Veil Nebula in Cygnus
Posted by HumanistJohnImages taken with Stellina (80 mm): M33 Triangulum Galaxy M1 Crab Nebula NGC281 Pacman Nebula in Cassiopeia NGC 6992 Veil Nebula in Cygnus
Posted by HumanistJohnImages taken October 2nd 2021 with Stellina 1.
Posted by HumanistJohnImages taken October 2nd 2021 with Stellina 1.
Posted by HumanistJohnImages taken October 2nd 2021 with Stellina 1.
Posted by starwatcher-al Did you know that you can see Venus in the daytime?
Posted by starwatcher-alOne of these days I think that I'll figure out this Nikon.
Members 731Top
Moderator
Related GroupsMore
HARRIS / WALZ Fanatics
38 members
Critical thinking
668 members
At Retirement!
93 members
Minnesota
59 members
Progressives, Socialists, and Black/Palestinian Lives Matter
2458 members
Conservative Bashers And Progressive Pushers
128 members
Gun Control Now
924 members
Introverts Unite!
2014 members