Physics

Woohoo russ! I was seeing if anyone would bring up the second law of thermodynamics (entropy always increasing). Indeed it is true, every action induces randomness. If you smash something, you cannot just unsmash it. That would violate the second law of thermodynamics. This is why time has directionality. But time theoretically can be reversed and it may eventually.

There are two eventual demises of the universe theorized (the first is popular now I think). One is that the universe continues expanding until stars run out of energy then everything dies. The other is that the universe will expand to a point then fall back in upon itself. This is where entropy is reversed (to us). The universe would be going from a state of great entropy to an eventual singularity. If you smashed something right before this reversal, it just may unsmash after the reversal. Time would be reversed to us. It would be normal to those that entirely live in the second half though.

I am particularly fond of the second demise. It seems to introduce a cycle into the grand scheme of things. The universe seems composed of so many cycles that it being a cycle itself (possibly even of an even greater cycle) just seems so eloquent.

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Originally posted by clickx17
So what happens if time were to stop?

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The dead cant speak, so we don't know

1.
Read some Professor Hawkins latest on Quantium Leaping.

2.
Quantium Looping is my own Theroy I`ve been working on.
We know that Quantium Leaping says in a nut shell time is like like a spider web.
You can leap from thread to thread 2d or straight across but only in your own time line.
Quantium Looping is basicly the same web but with linked rings aka alternate time lines.
You can again leap only in your own time line.
But you can also hook a loop and leap via the loop to a alternate reality aka a differnt but still the same thread..
This is possable because they must coexist to be.
Aka good does not exist with out evil positive without negative.

3.
Theres this Italian lady professor whos work is sounds produced in space.
Thats where I got the harmonic resinence theroy.
She says that our Galixy not the whole Universe produces a vibration that is recordable yearly.
If I could remember her name I`d give it to you.

4.
You don`t have to fold only in 2d .
I should have stated that more clearly.
You could bend space in a 3d matter like a worm hole .
But I say lets take it one step further you bend the worm hole in a u shape .
Next you bridge in a straight line the gap and now have a even shorter distance.
You repeat this 2 or 3 more times and you have a very short distance.

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Originally posted by nova

Good book. Didn't Brian Green write that? If so I got attend a lecture and Q/A session by him a couple of years back. It was really interesting.

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Yes (Greene), he can explain things to mere mortals like myself rather well.


Ah OK DrDeath, I know about quantum leaping. But that only applies if there are multiple parallel universes, which hasn't been proven and I don't ascribe to.

Bummer, about the Italian sound professor info. I would love to read about this. Maybe tomorrow I'll do a lil Google searching, getting late now.

Yes I know about bending spacetime, but it takes celestial objects to do that currently... Black holes doing it to the extreme (and possibly making wormholes). How one proposes to do this locally without destroying the planet (or solar system) is another thing entirely.

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Originally posted by Blacktooth

Yes (Greene), he can explain things to mere mortals like myself rather well.

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Yes, I remember that he was easily able to explain very complex ideas in a way that almost anyone could understand.

I was a high school physics student at the time with only mechanics and basic E&M and no modern physics to speak of and I understood almost everything he said. The only part I didn't understand was when he started trying to explain some of the strange math needed for a 4+ dimension universe. I never have been good at math theory though.

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Originally posted by Blacktooth
Thanks for the link jester22c. I sent him an email. If he responds I'll be sure to share it here. His inbox has to be flooded since that story broke. I'm not holding my breath.

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No problem. I emailed him too. Lol poor guy. AOL sends you enough spam/pr0n anyway.

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Originally posted by DrDeath
3.
Theres this Italian lady professor whos work is sounds produced in space.
Thats where I got the harmonic resinence theroy.
She says that our Galixy not the whole Universe produces a vibration that is recordable yearly.
If I could remember her name I`d give it to you.

4.
You don`t have to fold only in 2d .
I should have stated that more clearly.
You could bend space in a 3d matter like a worm hole .
But I say lets take it one step further you bend the worm hole in a u shape .
Next you bridge in a straight line the gap and now have a even shorter distance.
You repeat this 2 or 3 more times and you have a very short distance.

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3. I've read up on Harmonic Resonance theory...it's actually very interesting. One thing that intrigues me is the possiblity of "strings" of harmonic resonanace in the Universe. If we learn to tap these strings and manipulate them....who knows what we might be capable of doing... :)

But, I still don't understand the "yearly" thing? :confused: Why can it only be done yearly? A "year" is Earth-based....the Universe doesn't follow that!

4. I concur with Blacktooth. You would need an enormous mass object to bend space-time like that easily. I don't think the "magnets" from Event Horizon would work very well.

I wonder how we would be capable of doing that without destroying our planet....

You can bend space/time with huge, and I do mean huge electro-magnetic impulses. However this would inadvertently knock out all of the power in your hemisphere... not very practical.

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Originally posted by SlartyB
The laws of physics are all consistent with "negative" time. By that, I mean they are reversible. The "direction" of time is arbitrary. In theory, there is no reason you couldn't run the entire universe "backward" - things would fall up and water would flow uphill. However, I think this breaks the laws of thermodynamics that state the over-all entropy of a closed system must increase with time.

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But isn't this law of thermodynamics based on a universe in which time goes forward? Logically I would assume that this law would be reversed in a backwards flowing universe, such that the entropy of a closed system must decrease with time. Just as in a universe in which time goes forward, objects are attracted to one another due to gravity, in a backwards flowing universe the objects would exert a force opposing each other due to gravity.

Yoda, I think the point there was that the MATH works fine both ways, but the SCIENCE doesn't.

Albert Einstein's Special and General Theories of Relativity

A great link my little brother found (he's a Physics major with focus on particle behavior).

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Who would imagine that this simple law [constancy of the velocity of light] has plunged the conscientiously thoughtful physicist into the greatest intellectual difficulties?

-Albert
Einstein

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I'm not sure if anyone has posted this or not, but I came across this just now. I post it now, because the twin's paradox was discussed at one point in the thread.. It proves (mathetmatically) that there is in fact no paradox in the twin's paradox, and is in fact totally consistent with the theory of relativity:

http://www.pigsty.demon.co.uk/twins.html

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Originally posted by Sparky_D
3. I've read up on Harmonic Resonance theory...it's actually very interesting. One thing that intrigues me is the possiblity of "strings" of harmonic resonanace in the Universe. If we learn to tap these strings and manipulate them....who knows what we might be capable of doing... :)

But, I still don't understand the "yearly" thing? :confused: Why can it only be done yearly? A "year" is Earth-based....the Universe doesn't follow that!

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I haven't read the artcile(s) yet, so I'm not familiar with the theory, but off the top of my head:
I wonder if it has something to do with the movement of the earth around the sun. The movement of the earth might disturb some sort of "solar winds" or other such miniscule particles. That disturbance (from far away) will actually come in "pules." Since "sound" is merely a wave-pattern disturbance....its possible that this is one of the causes of this sound. That would lend credence to the fact that the sound wave is produced every year. That would also mean that there are other sound waves produced by every planet. But, maybe we can't detect them because the sound-wave pattern would radiate outward. We might possibly pick up the pattern by the inner planets (mercury, venus) but not anything beyond us.

but, like i said, i did not read the article(s) and have no basis for any of this. its just some thoughts

by "end" I mean when you get to the edge of the universe.

What do you think would happen to a thing that tried to go "out" of the universe?

doesn't everyone wonder that the universe is infinite is it not?

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Originally posted by clickx17
doesn't everyone wonder that the universe is infinite is it not?

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Einstein did not. And he regretted it later. :)

When he formulated his theory of relativity, (and this is information from other peoples analysis. I don't know much about this personally.) Where was I? Ah, when Einstein formulated his theory of relativity, one of the implications was that the universe was constantly either expanding or contracting and he thought it to be such a ridiculous proposition that he introduced a factor which fudged the equations so that they said the universe was constant and stationary.

Years later it was proved that the universe is constantly expanding and Einstein said he regretted putting in that fudge factor in there. The currently accpeted theory is that the universe is constantly expanding, so presumably there is no end to the universe because as soon as you got to what you think is the end, it'd have expanded and you wouldn't be at the end... ever. :p

until it starts to contract and then it gets fun

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Originally posted by raider1v1
until it starts to contract and then it gets fun

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I don't think the universe will contract! It is expanding, and accelerating, or so I've heard in scientific american.

Well you've got to wonder to whats out there and all the different solar systems...kinda mind boggling.

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Originally posted by raider1v1
until it starts to contract and then it gets fun

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Hey raider, did you read about the new theory that was proposed about, oh, a month or so ago? Some scientists have presented a model where the universe oscillates... it expands in a "big bang", and then goes on expanding some more and then it begins to contract and will finally collapse into a dense mass (probably something like a HUGE black hole) and then it will have a big bang again and collapse again. They think it might be an infinite cycle of expansion and collapses.

So if and when it starts to contract, we'll all just cease to exist. Not a very nice thought going into a Memorial day weekend, is it? :p

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Originally posted by bluesfusion


Hey raider, did you read about the new theory that was proposed about, oh, a month or so ago? Some scientists have presented a model where the universe oscillates... it expands in a "big bang", and then goes on expanding some more and then it begins to contract and will finally collapse into a dense mass (probably something like a HUGE black hole) and then it will have a big bang again and collapse again. They think it might be an infinite cycle of expansion and collapses.

So if and when it starts to contract, we'll all just cease to exist. Not a very nice thought going into a Memorial day weekend, is it? :p

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I'm not sure if that's a "new" theory.. I remember hearing something like that in 6th-grade Science class. ;)

Not like it matters to us, though. If the human race isn't extinct by then, our technology will be so incredibly advanced that nothing the universe does will affect us.

You wanna explain to me how our technological advances will prevent us from being destroyed by the unimaginable forces of the entire universe contracting into something smaller than the tip of my finger?

btw, any of you hear about the M-theory? It says that the universe as we know it is a gigantic membrane floating in a fifth dimension, and there there may be at least 10 dimensions, not just the 4 that we know of. It explains how the Big Bang happened(our membrane collided with another membrane, which caused a huge explosion)...something that other theories dont do.

He's right the sun will burn out before the universe collapses. But if we are alive to see that we will surely have survived numerous alien invasions and other catostrophic events, bascially making Earth invincable because there will technology you can't even imagine.

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Originally posted by bluesfusion


Einstein did not. And he regretted it later. :)

When he formulated his theory of relativity, (and this is information from other peoples analysis. I don't know much about this personally.) Where was I? Ah, when Einstein formulated his theory of relativity, one of the implications was that the universe was constantly either expanding or contracting and he thought it to be such a ridiculous proposition that he introduced a factor which fudged the equations so that they said the universe was constant and stationary.

Years later it was proved that the universe is constantly expanding and Einstein said he regretted putting in that fudge factor in there. The currently accpeted theory is that the universe is constantly expanding, so presumably there is no end to the universe because as soon as you got to what you think is the end, it'd have expanded and you wouldn't be at the end... ever. :p

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Einstein’s cosmological constant has made something of a comeback in the last few years. In 1999 a survey of distant supernovas came up with the somewhat interesting result that not only is the expansion of the universe not slowing down as previously thought. In fact the expansion is actually accelerating.

To account for this you need to add something that is mathematically the same as the cosmological constant. The physical explanation is something they are calling “Dark Energy”. From my understanding, dark energy comes from the tendency of empty space to repel mater and energy. This means that “empty” areas will inevitably grow like bubbles. In the “populated” regions of space it is opposed by gravity, but as distances increase dark energy begins to dominate.

The end result is a universe that is expanding in the same way rising bread expands. The bubbles inside grow forcing everything else apart. If this theory is correct, not only will the universe never collapse on itself, it will continue to expand more and more quickly.