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Time has so many wonderful attributes


Square Wheels

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It's the same for all.

It always moves forward (screw Einstein)

The Brits can add extra letters.  It's a second, not a secounf, hour already has a U.

It's the same everywhere, except to the silly scientists who need to use milliseconds and such foolishness.

It doesn't run backward in Australia.

No one is immune to it.

None of us can escape it.

 

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1 hour ago, Old No. 7 said:

Time is lying in the sunshine; staying home to watch the rain. You are young and life is long and you’ve got time to kill today.

Lying in the sunshine made me think of this one.  Loved it when I first heard it. Especially the line aboot time standing still at 2:11.

 

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"It's the same for all.  It always moves forward (screw Einstein)."

It's NOT the same for all and even Galileo noticed that four hundred years ago.  It's impossible for two people or things to experience the same rate of time is they are accelerating relative to each other.

Einstein never said time moves backward.  When I took calculus-based Modern Physics in College in the 70's, our studies of time changes did NOT indicate time could move backward.

That, by the way, is unique among the properties of the universe, which almost always come in pairs: to a backward there's a forward, left - right, up - down, positive and negative electricity, North and South magnetic poles. and most things are symmetrical - a violation of that symmetry is what lead Einstein to the Theory of Relativity.

So, if we left something on a table and moved to the right, we can correct the error by moving to our left and getting.  So why is it not possible that, when the tub overflows as time goes forward because we left the water on, we can't go backward in time and turn the water off before it overflows?

As a chemist/physicist, it seems more strange we can't do that than it is that our brains have gotten hard-wired into only thinking of time as going forward!

The late Steven Hawking, in his fantastic book, A Brief History of Time, uses only one simple formula in the entire book - and just uses it as an example, explaining all about time in plain words!

Hawking claims in the book that Time is tied to entropy and, because the entropy of the universe always increases (as per The Second Law of Thermodynamics), we only see time moving forward.  This raises an interesting question:

Entropy is a measure of disorder.  The more random things are or the more scattered they are or the more unstable they are, the greater their entropy.

Right now, the universe is expanding rapidly, tremendously increasing in Entropy.

So what happens if there's enough matter in the universe to slow down the expanding universe, eventually stop it and start it contracting?

Does the entropy of the universe constantly decrease and the "arrow of time" point in the opposite direction?

Will we relive Square Wheels Cycling in a reverse order 50 billion years in the future?

And, if the universe does contract to a single point, will there be another "Big Bang" that begins another universe and has this happened over and over in the "past."

I say "past" because, if the arrow of time shifts forward then reverse in each expansion then contraction of the universe, each new Big Bang is happening at the same time as the last big bang.  Does the universe repeat itself each time and so, we keep reliving everything or, more likely, is there enough randomness so there's a different universe each event?

But each new universe event occurs at the same time, so where are all the universes that exist in the same place as ours?

Are there, as mathematics claims, multiple dimensions and multiple universes?

Such a thing, by the way, is the only solid explanation for how electron particles can be shot through a tiny opening and behave a waves, stretching out to places they'd never reach as particles - unless there are multiple dimensions operating at the same time.

Yes, time has many wonderful attributes.

 

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