If there are infinite "parallel universes" would the laws of physics stay the same?

Question

What I'm getting at is WHY are the laws of physics the way they are?
Could they be altered?
Could there be better theories than Isaac Newtons and Einsteins?

Answer 1

First off, although Isaac Newton was a giant intellect his theories of motion, etc applied only to macroscopic objects; he never imagined that there was a world of molecular, atomic and subatomic particles and a variety of forces that operated only at these levels.

Einstein spent the last thirty years of his life trying to find a theory of 'everything', unlike Newton, Einstein knew that he had only scratched the surface of theoretical physics. His 'Special Theory of Relativity' and the famous E=m(c)squared have very limited applicability in spite of their genius, novelty and subsequent application.

Current theoretical physics allows only slight variations in the universal constants before changes in subatomic particles and the fundamental forces that control them would result in an instability that would have prevented solid matter from forming at all following the Big Bang.

Thus there may be some very slight leeway for variations in the fundamental physical constants so that, e.g. the universal constant of gravity might be fractionally different but the ordinary variations of matter and the forms in which it accretes (clumps together) allowed within our 'normal' constraints would ensure that bizarre forms of stars, planets and even life could exist that would make even parallel universes appear sufficiently alien in ways that might be difficult to understand.

Answer 2

Not necessarily because it's difficult to say why we have the laws of physics that we do. For instance, the speed of light is approximately 186,000 miles per second, but why? Why not 50,000 miles per second, or a million miles a second, or a billion?

Currently, physics is undergoing a radical change of thinking, with some of the brightest people we have working on what is commonly known as "String Theory". This theory predicts that parallel universes may be very common, and there's a very, very small chance that these parallel universes may be able to communicate with each other.

But String Theory also predicts that if there are parallel universes, then their laws of physics may be very different than ours. Some may be very much like ours, with atoms, matter, maybe even stars or planets.

The key to understanding what parallel universes may be like, we first need to understand how and why the laws we have actually came about after the Big Bang. And unfortunately, we just don't know, in fact we have barely an inkling.

Could our laws of physics be altered? We don't know because, again, we don't how they were put into place. Perhaps a super intelligent race out there has the answers, and maybe they have been altering the laws of physics without us knowing.

By the way, the speed of light has seems to have been decreasing as the universe has aged, but the reason is unknown.

Answer 3

If the Earth were on a different rotation, on a different axis - some of the laws of physics would be different. (for example: Magnetism would be different with a different rotation, and if magnetism changes, then electricity changes).

If there were a parallel universe - I believe some of the laws of physics would be different, but complementary to ours, and completely consistent with themselves, just as our are consistent.

I don't believe Newton's and Einstein's theories will ever be proven false: It is conceivable that they can be supplemented, or made more complete - but if they were false, we would have known it by now.

Answer 4

If the laws of physics were even slightly different, things would spiral out of control- there would be no atoms, never mind life or a recognisable universe. Saying that though, if parallel universes do exist, they are by definition unreachable, so not much for us to worry about really.

Answer 5

You are actually asking four distinct questions. I only have time to try to answer one at this moment. Why are the laws of physics the way they are? You should realize that you would have to ask this question to the "designer" of the universe because only he would know. I personally do not believe in a designer. But I believe that of the infinite number of possible universes only those which are self-consistent could possibly exist, those who are not would result in chaos so they cannot exist.

Answer 6

I believe in intrinsic physics, independent what people think and describe. I think = believe, that there is only one intrinsic physics which is not yet known completely.
(Grammar is difficult here, singular and plural)
Th

Answer 7

They would most likely be the same, but they might be discovered at different times, by different people, and people might have different theory's.

Answer 8

no it should be changed there is something in this universe that can break all the laws that man can,t understand.