Does Time Properly Dilate in the Relativity Game?

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Discussion Overview

The discussion revolves around the educational game "A Slower Speed of Light," focusing on whether it accurately simulates time dilation and other relativistic effects. Participants share their experiences with the game, including technical issues and observations about its educational value and accuracy in depicting relativistic concepts.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants report technical difficulties with the game crashing on various operating systems, particularly Windows.
  • There are mixed opinions on the game's educational value, with some suggesting it could be beneficial with proper instruction, while others find it lacking in educational content.
  • Participants note that while static objects in the game are simulated correctly, the motion of other characters does not properly reflect time dilation, relativistic velocity addition, or red/blue shifting.
  • One participant mentions that red/blue shifting can be observed after collecting a certain number of items, but the effects are subtle and may not be noticeable at higher speeds of light.
  • Another participant suggests that to better demonstrate relativistic effects, characters should exhibit more varied motion, such as stopping and accelerating or performing periodic motions.
  • Concerns are raised about the lack of visible motion in the characters, which could help illustrate the concept of proper time and time dilation more effectively.

Areas of Agreement / Disagreement

Participants express a lack of consensus on the game's effectiveness in demonstrating time dilation and other relativistic effects, with some agreeing on the shortcomings while others offer differing perspectives on specific aspects of the simulation.

Contextual Notes

Some participants highlight that the game's simulation may not fully account for the complexities of relativistic physics, such as signal delay potentially canceling effects like length contraction.

bcrowell
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One of my students told me about this: http://gamelab.mit.edu/games/a-slower-speed-of-light/

I haven't been able to try it because I don't run Windows or MacOS. As far as I can tell, it's free, but closed source. The license is extremely restrictive. No idea whether the game is any good either educationally or for fun.
 
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It crashes for me as soon as the game proper starts, on Window 7, 64 bit, multi-core laptop.
 
PAllen said:
It crashes for me as soon as the game proper starts, on Window 7, 64 bit, multi-core laptop.
A known bug will crash the game on computers with some Intel graphics chipsets.
To run the game, Windows users with multiple graphics processors may need to right-click the game's application icon, select ‘Run with graphics processor,’ and choose the option that is not marked as the default.
 
PAllen said:
It crashes for me as soon as the game proper starts, on Window 7, 64 bit, multi-core laptop.
Same for me on the original version of XP Professional that came with my very old laptop.
 
bcrowell said:
One of my students told me about this: http://gamelab.mit.edu/games/a-slower-speed-of-light/

I haven't been able to try it because I don't run Windows or MacOS. As far as I can tell, it's free, but closed source. The license is extremely restrictive. No idea whether the game is any good either educationally or for fun.

Have been trying to find this game for about 20 years.

Light at the speed of 10 meters/second makes my head hurt.
 
bcrowell said:
One of my students told me about this: http://gamelab.mit.edu/games/a-slower-speed-of-light/

I haven't been able to try it because I don't run Windows or MacOS. As far as I can tell, it's free, but closed source. The license is extremely restrictive. No idea whether the game is any good either educationally or for fun.
There is not much game in it, but it's fun to try out. As far as being educational, with the right instruction, certainly. By itself, not so much.

All of the simulation for static objects is done correctly. There are, however, some other characters in the game that also move about the field, and their motion is not properly simulated from perspective of time dilation, relativistic velocity addition, or red/blue shifting. So that's something to keep in mind. I don't know if it's something that was overlooked, ignored, or simply not done yet.
 
K^2 said:
There are, however, some other characters in the game that also move about the field, and their motion is not properly simulated from perspective of time dilation, relativistic velocity addition, or red/blue shifting.
I think red/blue shifting is okay, but you have to collect at least 80 balls to see the effect. If you then stand around the approaching characters have a different color that the receding ones. Not sure about the other stuff, but keep in mind that the signal delay can partially cancel effects like length contraction. To show those effects better, the characters would have to do more than just move at constant speed. They should:
- Stop and then accelerate again, from time to time.
- Perform some periodic motion that indicates their proper time

A good test for their engine would be a character on a bike with big spoke wheels:
http://www.spacetimetravel.org/rad/rad.html

More relativistic ray tracting for comparison:
http://www.spacetimetravel.org/
 
A.T. said:
I think red/blue shifting is okay, but you have to collect at least 80 balls to see the effect.
You are right. I'm not sure how I didn't notice this. I think I was specifically looking for it. Maybe I tried it when the speed of light was still too high. It's kind of subtle even at 80.
A.T. said:
- Perform some periodic motion that indicates their proper time
They do. They leave huts at fixed intervals. I just timed one standing still and again while making a round trip. No difference. 20 seconds flat both times. So time dilation definitely isn't working.
 
I have just tried this game. Is it just me or does time not properly dilate in this game?

Those moving "people" do not seem to change speed.
 
  • #10
Does it have FTL, wormholes, time travel, warp drives and photon torpedos?
 
  • #11
Vodkacannon said:
I have just tried this game. Is it just me or does time not properly dilate in this game?

Those moving "people" do not seem to change speed.
See comments by K^2. It would be easier to tell, if they where actually moving their legs, or swinging their arms while walking. This would (if done properly) demonstrate the rate of their proper time.
 

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