Search found 151 matches
- Thu Mar 17, 2016 1:11 pm
- Forum: Velocity Raptor
- Topic: Backward Time???
- Replies: 3
- Views: 31402
Backward Time???
On bonus level 40, if you go to the top right corner of the screen and accelerate to the right, the bullets going from left to right go backwards back into the cannon! Since the raptor is accelerating, it is not an inertial frame, but this still seems impossible. I know that relativity can slow down...
- Tue Mar 15, 2016 12:45 pm
- Forum: Velocity Raptor
- Topic: Just a few Relativity Questions
- Replies: 28
- Views: 75637
Re: Just a few Relativity Questions
So is the center of the Earth an inertial frame since it is in 'free-fall' around the sun?
- Mon Mar 14, 2016 10:58 pm
- Forum: Gravity Simulator
- Topic: Opposing orbits
- Replies: 2
- Views: 10043
Re: Opposing orbits
Yeah, that makes sense. So planets going in opposite directions pass each other for less time and their interactions cancel out or don't add up over time. Thanks.
- Sun Mar 13, 2016 2:24 pm
- Forum: Velocity Raptor
- Topic: Bug
- Replies: 6
- Views: 31269
Re: Bug
Oh, I see! Light from far away bullets traveling toward you hasn't arrived yet, so we see them back in time. But back in time they were even farther away, so they seem stretched ('red-shifted'). The opposite happens for bullets moving moving away from you. Back in time they were closer to you, so th...
- Sun Mar 13, 2016 2:19 pm
- Forum: Velocity Raptor
- Topic: Bug
- Replies: 6
- Views: 31269
Re: Bug
Is it because of acceleration?
- Sun Mar 13, 2016 1:03 pm
- Forum: Gravity Simulator
- Topic: Opposing orbits
- Replies: 2
- Views: 10043
Opposing orbits
I noticed that when two massive planets orbit nearby in the same direction, they interact a lot and tend to be unstable, switching place, swinging out of the system, or even colliding. However, when the two planets are going in opposite directions, they seem to be very stable and don't interact much...
- Thu Mar 10, 2016 5:06 pm
- Forum: Gravity Simulator
- Topic: How to produce other inverse laws in parallel universes
- Replies: 1
- Views: 15045
Re: How to produce other inverse laws in parallel universes
Hmm. Fractals can have irrational numbers of dimensions, so if fractal space is possible, then all laws like r^(-x) would work.
General relativity only really works in 3 spatial dimensions though.
General relativity only really works in 3 spatial dimensions though.
- Thu Mar 10, 2016 5:03 pm
- Forum: Gravity Simulator
- Topic: r^(-2.9)
- Replies: 2
- Views: 10231
Re: r^(-2.9)
Yeah, I think I see what you mean. So the orbit itself precesses faster than the planet is moving and that makes it go around several times before getting farther again. I wonder what force laws can produce this effect, like if r^(-2.8) or r^(-2.5) will work.
- Wed Mar 09, 2016 6:32 pm
- Forum: Gravity Simulator
- Topic: r^(-2.9)
- Replies: 2
- Views: 10231
r^(-2.9)
I was playing with various gravity laws and found that r^(-2.9) was very strange. The orbit spirals inward, and it seems like it will collapse, but then it swings around the star several times and the comes back out. Why does it behave like this?
- Sat Oct 05, 2013 7:26 pm
- Forum: Gravity Simulator
- Topic: Calling all Suggestions
- Replies: 124
- Views: 146367
Re: Calling all Suggestions
Good TV shows:robly18 wrote:Ah.
I should really watch that movie. Shame I'm not much of a TV or movies or anything-that-isn't-computer guy :\
The Universe
Mythbusters