5 ms·

Very good illustration how "full inertial physics" works (in contrast to what can be seen in sci-fi movies). This is a huge potential procrastination catalyst

by cgufus 6y ago

Very good illustration how "full inertial physics" works (in contrast to what can be seen in sci-fi movies). This is a huge potential procrastination catalyst :-)

amelius 6y ago
"Gravity" was quite accurate, no?
- JshWright 6y ago
  In some ways... In many other ways the physics was wildly inaccurate.
  - elteto 6y ago
    The rope scene always bothers me. Why are the ropes and the strap taut after the first snap? What’s pushing him away? It sure isn’t wind! And there is no rotation either. [0] https://youtu.be/DYDaIyfitn8 https://youtu.be/DYDaIyfitn8
    - effie 6y ago
      In the frame of the orbiting station, there is the tidal force, which is proportion to distance from the point where the rope is fixed on the station. But even if he was 100m away, tidal force would be like 7 grams. So tidal force can't be it. The most likely reason would be some part of the station venting gas out, accelerating. The gas could blow towards the astronaut to make it worse.
      - JshWright 6y ago
        Given how fast and loose the movie played with physics in general (orbital mechanics, especially), I wouldn't go too far out of my way to try to explain gaps.
- mkl 6y ago
  No. It's a great movie, but pretty much every bit of orbital dynamics was wrong, along with many other things. Here are a few articles explaining, and it's not hard to find more: https://science.time.com/2013/10/01/what-gravity-gets-right-and-wrong-about-space/ https://science.time.com/2013/10/01/what-gravity-gets-right-..., https://slate.com/technology/2013/10/bad-astronomy-movie-review-gravity.html https://slate.com/technology/2013/10/bad-astronomy-movie-rev..., https://www.spaceanswers.com/space-exploration/16-things-gravity-got-wrong-and-some-things-it-got-right-too/ https://www.spaceanswers.com/space-exploration/16-things-gra...
- iso1631 6y ago
  you could see another spacestation, and somehow get there!
Aeolun 6y ago
It shouldn’t be that hard to have the full inertial physics computer cancel out your current rotation/movement, so unless you’re absolutely trying to conserve fuel, Sci-fi ships are perfectly acceptable to me (aside from obvious warp/fantasy).

by cgufus 6y ago

Very good illustration how "full inertial physics" works (in contrast to what can be seen in sci-fi movies). This is a huge potential procrastination catalyst :-)

amelius 6y ago

"Gravity" was quite accurate, no?

JshWright 6y ago
In some ways... In many other ways the physics was wildly inaccurate.
- elteto 6y ago
  The rope scene always bothers me. Why are the ropes and the strap taut after the first snap? What’s pushing him away? It sure isn’t wind! And there is no rotation either. [0] https://youtu.be/DYDaIyfitn8 https://youtu.be/DYDaIyfitn8
  - effie 6y ago
    In the frame of the orbiting station, there is the tidal force, which is proportion to distance from the point where the rope is fixed on the station. But even if he was 100m away, tidal force would be like 7 grams. So tidal force can't be it. The most likely reason would be some part of the station venting gas out, accelerating. The gas could blow towards the astronaut to make it worse.
    - JshWright 6y ago
      Given how fast and loose the movie played with physics in general (orbital mechanics, especially), I wouldn't go too far out of my way to try to explain gaps.
mkl 6y ago
No. It's a great movie, but pretty much every bit of orbital dynamics was wrong, along with many other things. Here are a few articles explaining, and it's not hard to find more: https://science.time.com/2013/10/01/what-gravity-gets-right-and-wrong-about-space/ https://science.time.com/2013/10/01/what-gravity-gets-right-..., https://slate.com/technology/2013/10/bad-astronomy-movie-review-gravity.html https://slate.com/technology/2013/10/bad-astronomy-movie-rev..., https://www.spaceanswers.com/space-exploration/16-things-gravity-got-wrong-and-some-things-it-got-right-too/ https://www.spaceanswers.com/space-exploration/16-things-gra...
iso1631 6y ago
you could see another spacestation, and somehow get there!

Aeolun 6y ago

It shouldn’t be that hard to have the full inertial physics computer cancel out your current rotation/movement, so unless you’re absolutely trying to conserve fuel, Sci-fi ships are perfectly acceptable to me (aside from obvious warp/fantasy).