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Physics question, is a true DC or constant magnetic field truly possible?
ejeffrey:
--- Quote from: BrianHG on March 28, 2024, 12:38:39 am ---Well? I guess you might call this a philosophical question, but, no matter the power source creating your DC power, it will eventually die meaning no longer a DC signal as it has an AC attribute. (Heat death of the universe and all that...) Even a permanent magnet's field fades over time, hence they are not truly constant.
Can we or the universe ever achieve an authentic 0hz unchanging charge with 0 AC characteristics?
--- End quote ---
Don't forget the other time direction. It's not "DC" if it didn't already exist since the beginning of the universe. So we by definition cannot "create" a DC field.
BrianHG:
--- Quote from: ejeffrey on March 29, 2024, 03:41:59 am ---
--- Quote from: BrianHG on March 28, 2024, 12:38:39 am ---Well? I guess you might call this a philosophical question, but, no matter the power source creating your DC power, it will eventually die meaning no longer a DC signal as it has an AC attribute. (Heat death of the universe and all that...) Even a permanent magnet's field fades over time, hence they are not truly constant.
Can we or the universe ever achieve an authentic 0hz unchanging charge with 0 AC characteristics?
--- End quote ---
Don't forget the other time direction. It's not "DC" if it didn't already exist since the beginning of the universe. So we by definition cannot "create" a DC field.
--- End quote ---
I think you hit the nail on the head...
m k:
If you accept that energy is a point like object called photon, your definition of constant will fail instantly.
If not then you have few single photon experiments to explain.
EPAIII:
When you toss in the heat death of the universe that means you are talking about an extremely long time period. And physicists can only make educated guesses as no one has ever run any experiments or observations over that time period. That "heat death of the universe" thing IS one of those educated guesses. If the truth be known, no one can be sure.
On top of that, how can we or any descendant of ours ever know that the heat death of the universe has been reached. At that point, BY DEFINITION there would be no life, no mechanical devices, absolutely nothing but matter where the temperature of that matter would be completely uniform AND ANY ORGANIZATION OF THAT MATTER WOULD BE TOTALLY NONEXISTENT. No clock could exist. No observing or recording device of any kind could exist. The only thing that could exist would be a gas which was completely, absolutely, uniformly spread over the entire universe and all of it at the same exact temperature. And nothing to observe it.
More to the point of your question, there could be absolutely no unbalanced forces. All force, BY DEFINITION, would have to be uniform. ABSOLUTELY UNIFORM. I suppose gravity would still be there, pulling everything toward "the center" but where would that be? Does the universe have sides or edges? That seems doubtful. Perhaps it wraps back upon itself. If you go far enough in any direction, you wind up back at your starting point. And that is VERY LITERALLY in ANY direction. Don't ask how that is possible because I don't know. The answer to that one is beyond the pay grade of Einstein or Hawking or any other scientist you care to name or ever could name. Well beyond it. So perhaps, just perhaps, even gravity would also be completely balanced in all directions and nothing could ever change again. And because the entire universe is in a state of complete and total balance, it could not even collapse into a black hole or singularity. It could only remain exactly as it is.
What I am saying is that no matter how much alphabet soup they have after their names or how famous or well regarded they may be, they just don't know. Educated guesses? Yes. Absolute knowledge? NO!
It's dead Jim! The universe is dead, Jim!
Universe without end, amen!
But then, what do I know?
--- Quote from: BrianHG on March 28, 2024, 12:38:39 am ---Well? I guess you might call this a philosophical question, but, no matter the power source creating your DC power, it will eventually die meaning no longer a DC signal as it has an AC attribute. (Heat death of the universe and all that...) Even a permanent magnet's field fades over time, hence they are not truly constant.
Can we or the universe ever achieve an authentic 0hz unchanging charge with 0 AC characteristics?
--- End quote ---
EPAIII:
OK,
PROVE IT!
No proof, no tee shirt.
--- Quote from: ejeffrey on March 29, 2024, 03:41:59 am ---
--- Quote from: BrianHG on March 28, 2024, 12:38:39 am ---Well? I guess you might call this a philosophical question, but, no matter the power source creating your DC power, it will eventually die meaning no longer a DC signal as it has an AC attribute. (Heat death of the universe and all that...) Even a permanent magnet's field fades over time, hence they are not truly constant.
Can we or the universe ever achieve an authentic 0hz unchanging charge with 0 AC characteristics?
--- End quote ---
Don't forget the other time direction. It's not "DC" if it didn't already exist since the beginning of the universe. So we by definition cannot "create" a DC field.
--- End quote ---
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