What is the Universe expanding into..

Do you think there was anything before the big bang?

  • I don't think there was anything before the Big Bang

    Votes: 56 12.5%
  • I think something existed before the Big Bang

    Votes: 200 44.7%
  • I don't think the big bang happened

    Votes: 54 12.1%
  • I think the universe is part of a mutiverse

    Votes: 201 45.0%

  • Total voters
    447
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I watched an interesting show on Natgeo a few years ago.

The hypothesis was that there were multiple universes, which occasionally came into contact with each other. At the point they made contact, one would expand into the other - sort of cosmic procreation for want of a better description - with the transfer of energy etc.

They explained it as two flat planes that were oscillating and would then touch.

The resonant frequency of the system was c. 100 billion years IIRC.

I would postulate that a universe without time is pure energy. A singularity. But, is it stable? Maybe not and this condition is only fleeting. If it is a stable condition, maybe there are lots of singularities out there . . .
 
SNR said:
Take a look at the interaction of electrons that occurs in an amplifier.
Time (current (I)) can be different at different locations, depending on what obstacles the electrons encounter on their way back to "ground".
Some of them can be temporarily stored, by changing the physical state of the electron through chemical reaction, while other electrons pass by.
By definition, a time machine.
?

299 792 458 mps compensates for our localized mass and speed.

If you were twice as big, on a planet twice the size E=mc² would still work but "299 792 458" meters per second would not be the speed of light in that situation.
No. That number is the speed of light in a vacuum, far from any gravitational influence. Compensating for our local mass etc. gives a very very slightly different number.
 
No. Ohm's Law is an approximation suitable for certain systems and not others (try applying it to a PN junction!). It has three independent variables. Einstein's equation is universal and only has two variables- c is a constant, and that's a fundamental which has such overwhelming experimental support as to render objection crankery.



Perfect example of a sentence that is grammatically correct and physically meaningless.

No, not at all.

My referral to ohms law was to demonstrate that there is more then one thing to calculate.

(Also last time I checked, if I want to know I, all I need is V and R, which is only 2 parameters.)

Different configurations of Voltages and Resistance can yield the same observable current.

I worded it in a specific way to avoid literal comparison, I'm surprised a grammatical expert like yourself missed this.

On Earth C is viewed as constant, I did not say otherwise, no need to indirectly call me a "crank".

Keep in mind ones view of a crank is defined by the contemporaries they keep.
Unfortunately for you in this discussion, physics is not a democracy.

I suppose the beauty of the universe lies in the fact that there should be an infinite number of straws to grasp at.
 
Alright then.

Personally I believe time is very likely eternal and energy is apparently forever constant, at least that's what this law informed me law of conservation of energy - Wiktionary.

That's just me. :wiz:

I can see how discussing these two particulars are heading towards theology and such.

I'll be quiet now and let the thread continue with mathematics and statistics hehe. :snowman2:
It is imho rather subjective and un-scientific to talk about eternity because it is non-defined (as many subjects concerning theological subjects tend to be). And science tends to occupy it's self with definable and quantifiable objects, because they are reproducible and verifiable by others.

The laws of conservation of energy (and mass) however are scientific subjects.
 

This demonstrates why a neutrino can appear to be faster then a photon.

No. That number is the speed of light in a vacuum, far from any gravitational influence. Compensating for our local mass etc. gives a very very slightly different number.

You fail to realize that you cannot apply that "Earthly" number to light. The speed of light is the speed of light.

There is nothing static in the universe to measure speed from.
299 792 458 mps is just a comparison to standing still on Earth.
The reality is that the whole earth is constantly moving.

Redshift could in theory be measured differently at opposite sides of the planet during dusk and dawn.

There is over 2000 mile per hour difference in the "speed" alone of these two observers, relative to the distant target, due to the rotation of the earth.

That alone debunks 299 792 458 mps as being a "constant" "speed" for light.
 
Or I and V, or R and V. All are variables, c is not. And not just on earth- everywhere. It's structurally fundamental to the universe.

That is grammatically and physically incorrect.

A fixed resistor in a circuit, is just that, tolerances aside, same with voltage.

The math deals with what is happening, not what might be happening next from a human's point of view.
 
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SNR said:
You fail to realize that you cannot apply that "Earthly" number to light. The speed of light is the speed of light.

There is nothing static in the universe to measure speed from.
299 792 458 mps is just a comparison to standing still on Earth.
The reality is that the whole earth is constantly moving.

Redshift could in theory be measured differently at opposite sides of the planet during dusk and dawn.

There is over 2000 mile per hour difference in the "speed" alone of these two observers, relative to the distant target, due to the rotation of the earth.

That alone debunks 299 792 458 mps as being a "constant" "speed" for light.
That alone debunks any claim you might have to comment on the speed of light. You clearly have not even begun to understand special relativity. Newtonian relativity is a good low speed approximation to reality, but breaks down at higher speeds. The existence of magnetic fields and nuclear power stations shows that Newton was inadequate in his understanding.

That is grammatically and physically incorrect.

A fixed resistor in a circuit, is just that, tolerances aside, same with voltage.
There is a huge and fundamental difference between Ohm's Law - a statement of what is approximately true for that subset of conductors, voltages and currents for which it is approximately true - and the equality of mass and energy (a property of all mass and all energy everywhere for all time). One is a helpful engineer's tool; the other a law of nature
 
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There is a huge and fundamental difference between Ohm's Law - a statement of what is approximately true for that subset of conductors, voltages and currents for which it is approximately true - and the equality of mass and energy (a property of all mass and all energy everywhere for all time). One is a helpful engineer's tool; the other a law of nature

You really are not good with understanding analogies, perhaps it is left best to others.

The volume pot on my stereo is variable, yet calculations are generally based on it in a fixed position.
 
Unfortunately my PhD is in EE and special relativity did not come up in the viva. It did come up in my first year BSc physics exams, many years earlier. I must admit that I have doubts about the underlying fundamental ideas of SR (and QM) but I can't argue with decades of clear experimental results and self-consistent mathematical models. My concerns are on a rather different level from those who would not recognise a Lorentz transform (or an eigenvalue) if it dropped on their foot!
 
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I don't agree to the statement that Hubble was able to see to the end of the universe. Only the statement that he was able to see until the boundaries of our space-time-horizon is correct. And it's true that beyond that boundary nothing is to be seen.... simple, the light emitted from those regions was not able to reach us.

Our time-horizon enables us to observe a somewhat spherical part of space-time. THAT is the limitation we have to deal with.

That is not far from my view from the Hubble telescope data's findings (as described in science documentary). I just describe beyond the boundary as a void.

-Richard
 
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