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Programming challenge, gravity
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De
30/06/2004 15:47:50
 
 
À
30/06/2004 14:56:13
Information générale
Forum:
Visual FoxPro
Catégorie:
Autre
Divers
Thread ID:
00916106
Message ID:
00919324
Vues:
39
>>4th) make separate mtdll's out of those objects, so that each object can continuously, independently function, and provide the other objects with data.
>
>Interesting suggestion; it accomplishes something similar to the suggestion that the model exist as a DBF where multiple EXEs, even from different computers, can be adding the new information to the DBF giving us a distributed version of the model.
>
>The big difference worth pointing out between the models is that the one I describe runs deterministicly. It will run the same way every time. I think that might not actually be the case with what you describe, where the objects running independently of each other might lead to them calculating differently depending on the randomness interjected by the operating system code and when each object is alloted CPU cycles.

Yes, i agree that your model will bring the same result every time you run it, but, this would not be a realistic result then, it would be a 'theoretical' result.

there is a certain amount of 'chaos' involved here. Let’s take our solar system, 1 star and 9 planets. the movement of the planets around our sun is governed by the forces involved from other objects surrounding the planet in question and forces it inflicts upon itself.

in addition to this on every movement there is something else involved: chaos. if i remember my physic classes correctly this is teached by Quantum Physics. what that means is that in certain situations (not all the time) there is a possibility that the outcome might not be the same every time, giving the same parameters.

In real life (our solar system again) this would translate to minute differences on the path/speed of each planet. now of course they will always travel around the sun, but maybe the speed will change just a tad.

So the bottom line is this: what are you trying to accomplish? If you want an exact reproducible result, a theoretical model, I think your solution is the more appropriate one. If you want to be closer to a real life situation I think my outline is the one to go with.

Now, I have no clue if my solution would work at all. Because it is based on real time calculation, computer power might be an issue, or a tiny change in a calculated number might translate into a big ‘bubu’ later on. But it sure would be interesting to build such a project.


>
>For the purpose of physics, a determinate model would definitely be more valuable. I think. :-)

what is a "determinate model" (english is my second language)
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