Welcome, Guest

Author Topic: Speed of Light  (Read 4708 times)

TheMrCake

  • *
  • Posts: 3
Speed of Light
« on: April 03, 2013, 09:02:19 AM »
My question is, whether the speed of light will be more relevant in Universe Sandbox 3.

For example: Will the light on earth will actually go off 8 minutes later when I delete the sun?

And will there be an velocity limit? (because I once set the mass of the sun to 20 times the mass of the Milky Way and then the earth suddenly was 1800 times faster than light.

Just to make Einstein happy  :P

Hellpotatoe

  • *****
  • Posts: 230
  • JooJ
Re: Speed of Light
« Reply #1 on: April 03, 2013, 09:12:31 AM »
Kol your name.

About the light thingy, well, I don't think so. It would make the simulation very complex and stuff.

But yeah, velocity limit would be very good..

TheMrCake

  • *
  • Posts: 3
Re: Speed of Light
« Reply #2 on: April 03, 2013, 10:41:35 AM »
Kol your name.

About the light thingy, well, I don't think so. It would make the simulation very complex and stuff.

What about my name?

The light from the sun would just expand in a sphere at the speed of light...
If the sun disappeared, it would stop emitting and then a "black" sphere would expand within the "light" one.
Only to mention that you cannot see those spheres but their reflections on an surface.

I don't see any problems here...

tuto99

  • *****
  • Posts: 533
  • Baba Booey
Re: Speed of Light
« Reply #3 on: April 03, 2013, 11:14:15 AM »
My question is, whether the speed of light will be more relevant in Universe Sandbox 3.

For example: Will the light on earth will actually go off 8 minutes later when I delete the sun?

And will there be an velocity limit? (because I once set the mass of the sun to 20 times the mass of the Milky Way and then the earth suddenly was 1800 times faster than light.

Just to make Einstein happy  :P
This is a great suggestion. I hope Dan adds this to Ubox 3.  :)

Hellpotatoe

  • *****
  • Posts: 230
  • JooJ
Re: Speed of Light
« Reply #4 on: April 03, 2013, 11:35:08 AM »
Kol your name.

About the light thingy, well, I don't think so. It would make the simulation very complex and stuff.

What about my name?
Its awesome  :P

blotz

  • Formerly 'bong'
  • *****
  • Posts: 813
  • op pls
Re: Speed of Light
« Reply #5 on: April 04, 2013, 06:21:33 PM »
we should have faster than the speed of light, as this is a "sandbox"

tuto99

  • *****
  • Posts: 533
  • Baba Booey
Re: Speed of Light
« Reply #6 on: April 04, 2013, 06:45:58 PM »
we should have faster than the speed of light, as this is a "sandbox"
No.

TheMrCake

  • *
  • Posts: 3
Re: Speed of Light
« Reply #7 on: April 05, 2013, 02:12:26 AM »
we should have faster than the speed of light, as this is a "sandbox"

Of course you would be able to turn that feature off.

Darvince

  • *****
  • Posts: 1842
  • 差不多
Re: Speed of Light
« Reply #8 on: April 05, 2013, 08:02:14 AM »
well 0.99c takes twice as much energy to move that speed than 0.98c so i hope we can have either newtonian (can go past c) or einsteinian (can approach c but never reach it)

Dan Dixon

  • Creator of Universe Sandbox
  • Developer
  • *****
  • Posts: 3244
    • Personal Site
Re: Speed of Light
« Reply #9 on: April 05, 2013, 07:24:51 PM »
If the sun suddenly disappeared it would take 8 minutes before Earth would feel that effect.

However in Universe Sandbox gravity (and what you see) is all displayed and simulated instantaneous.

It's an idea we've talked about, but is also problematic. According to Tony of Gravity simulator, not instantaneous Newtonian physics are unstable when simulated:
http://universesandbox.com/forum/index.php/topic,30.msg139.html#msg139