Is the Universe Infinite?

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Message 1606117 - Posted: 27 Nov 2014, 12:24:21 UTC - in response to Message 1605104.  

Another unanswerable question: If "space"'s time has no beginning, or ending, then how can we exist as a point of time, in it?

Yet, we obviously do.

Time is different, not only by speed that we travel...but also by the Gravity we have on the planet...

The begining and the ending is only human interpretation of the Universum...I ask you, why would something as Universe have begining or an ending?
Even though we some call cloud colapses a Star birth...they don't! It's just some gas that reorginizes into a cold Gas giant...and when the gas surpases critical Jeans mass, a Star is born - but is it, only a gas reorganizes...and it shines, and to the end of life it exands & explode in Supernova's...but they don't actually die, just transforms into Neutron star or Black hole...and continue on...Neutron will eventually find a star to feed itself to become a Pulsar...Black hole will evaporate during the time if it's not feed...etc.

nothing in Universe suggests that there is a Birth & Death...only humans! so why would Universe have Birth & Death?


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Message 1606119 - Posted: 27 Nov 2014, 12:28:20 UTC - in response to Message 1606115.  

If you could stand on the Earh core & look at the mantile...would the core rotate? What the lava rotate? And would the Mantile rotate?

If course not! But we do have continental drift even today.

The lithosphere, which is the rigid outermost shell of Earth, the crust and upper mantle, is broken up into tectonic plates. The lateral relative movement of the plates typically varies from zero to 100 mm annually. Tectonic plates are composed of oceanic lithosphere and thicker continental lithosphere, each topped by its own kind of crust. Along convergent boundaries, subduction carries plates into the mantle.

http://upload.wikimedia.org/wikipedia/commons/thumb/1/10/Snider-Pellegrini_Wegener_fossil_map.svg/580px-Snider-Pellegrini_Wegener_fossil_map.svg.png

stll looking from the outside, try thinking from the inside...you are INSIDE the UNIVERSE, not outside!

try the baloon experiment! ;)


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Message 1606151 - Posted: 27 Nov 2014, 14:22:45 UTC - in response to Message 1606144.  

The begining and the ending is only human interpretation of the Universum...I ask you, why would something as Universe have begining or an ending?

Nothing in Universe suggests that there is a Birth & Death...only humans! so why would Universe have Birth & Death?


Exactly, well said that man!


Stars get born and die too.
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Message 1606163 - Posted: 27 Nov 2014, 14:57:11 UTC - in response to Message 1606151.  



Stars get born and die too.

yes, with a whimper.
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Message 1606508 - Posted: 28 Nov 2014, 11:49:13 UTC - in response to Message 1606151.  

The begining and the ending is only human interpretation of the Universum...I ask you, why would something as Universe have begining or an ending?

Nothing in Universe suggests that there is a Birth & Death...only humans! so why would Universe have Birth & Death?


Exactly, well said that man!


Stars get born and die too.

No they don't...as I earlier said it!

Or would you call a Neutron or Pulsar star a "carcass"? What about a Black hole?
;)


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Message 1606597 - Posted: 28 Nov 2014, 16:49:14 UTC

The final state of a star depends on its mass. Most stars end as white dwarfs, those with mass above 3 solar masses end like neutron stars. A few of them become pulsars, mostly if they belong to a binary system. Only very heavy stars become black holes.
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Message 1607018 - Posted: 29 Nov 2014, 21:04:01 UTC - in response to Message 1602466.  

Time is simply a measure of the elapse between two events, nothing more nothing less.

How do you measure the "elapse"? With time. So this definition of time is circular. Time is a measure of time.

Time does not measure progressive events, progressive events provide a measure of time. But only a measure, progressive events aren't time any more than a ruler is distance.

Time and distance are somehow connected. We know that because when an object moves quickly through the thing called distance, the thing called time on that object slows down.

The fastest an object can move is the speed that causes time to slow to zero. That speed is the speed of light.

This behaviour can be explained if speed and time are two components of a vector that always has the same length.

When the speed component is zero, the time component of the vector is the "normal" rate at which time progresses. The resulting vector points directly in the time direction.

When the speed component is the speed of light, the time component of the vector is zero. The resulting vector points directly in the speed or "space" direction.

Seen this way, time is a dimension. Similar but not identical to the physical dimensions we are familiar with.
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Message 1607485 - Posted: 1 Dec 2014, 0:54:39 UTC
Last modified: 1 Dec 2014, 1:01:43 UTC

If I choose to draw an ellipse as opposed to be making a perfect circle, in which way am I able to compute the possible walk-around distance across its circular curvature across the surface or maybe computing its volume if it happens to be a three-dimensional object instead?

If the drawing for some reason slips open, you get an hyperbolic orbit from it. By means of possible speed, certain types of objects may be able to escape and run away.

If I happened to be living on the surface of a very big such object and nothing being above my head and only with solid ground below my feet, I would assume it to be "Flatland".

Same goes with our perception of our three-dimensional vs. the four-dimensional world that we are not able to see or perceive. We would take things granted based on what we would be able to see and observe.
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Message 1607676 - Posted: 1 Dec 2014, 13:43:45 UTC - in response to Message 1607210.  
Last modified: 1 Dec 2014, 13:44:23 UTC

Can I make a few observations here please, which are IMHO.

How do you measure the "elapse"?

By deciding what units you want to measure the elapse in, then using a recording device to measure the number of units between the two events. If it was seconds you could use a clock, it it was more accuracy you wanted you could use a radiation period instrument. The result is the number of units recorded which we refer to as time.

You are using some device that "experiences" time to try to measure its own experience.

The best that we can do is note that there has been a change from one event to a second event. We can call the interval between those two events "some unit of time". However, we may as well note passing two waypoints on a road whilst having no concept of 'speed' or the route taken between those two waypoints.

So far, "time" is an abstract concept for which we cannot make any direct measurement.

The best we can do is to create physical devices that note movement between local events.


Time and distance are somehow connected.

Time and distance are connected by velocity...

And in that there is a curious clue...


Keep searchin',
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Message 1607861 - Posted: 1 Dec 2014, 22:10:59 UTC - in response to Message 1562500.  
Last modified: 1 Dec 2014, 22:21:13 UTC

I get the impression that they don't have a clue.


The really good ones admit they don't have a clue ;o)
My theory is the big bang moved at such a rate it created a void to pull more material through from a different plane of existence. From the little I've read about 'branes' (membranes) it's as logical as anything mathematical out there?
As for continental drift and plate tectonics, that was just a theory until late 60's/early 70's. Mid-Atlantic ridge is pushing America further away from Europe, Britain is slowly being pushed underneath France, etc.
Gravity is preventing planet expanding and in effect turning inside out. Moon creates tidal bulges which probably help keep iron core hotter than it would be without being present, 8,000miles of pressure and friction is really going to have an effect. If you've ever had 'carpet burns' you know what 2ft and 130lbs pressure can do ;o)
I'm not a complete idiot, but, I'm working on it.
I have an opinion and I'm not afraid to use it
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Message 1608118 - Posted: 2 Dec 2014, 12:04:11 UTC - in response to Message 1607210.  


How do you measure the "elapse"?

By deciding what units you want to measure the elapse in, then using a recording device to measure the number of units between the two events. If it was seconds you could use a clock, it it was more accuracy you wanted you could use a radiation period instrument. The result is the number of units recorded which we refer to as time.

And if we know that Earth is rotating arond it's axis...and revolving around a Sun...and the Sun is revolving in Milky way...and Milky way is not stationary!

What is time?
And what lapses of radiation is speedless time, when you could slow down all the things of that atomic clock?
And what if you put that atomic clock in the VOID, how many lapses of radiation would it count per earthly second?


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Message 1608387 - Posted: 3 Dec 2014, 1:16:19 UTC

According to our friend the Wikipedia:

"Time in physics is defined by its measurement: time is what a clock reads."

Which more or less what we often say: time is the progression of events.

What is curious about the progression of events is that the rate of progression depends on the speed of the thing producing the events. The speed of the clock.

This is not just velocity = distance/time, this is something completely different that connects space and time.
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Message 1608566 - Posted: 3 Dec 2014, 7:58:08 UTC

But, we are not talking about elemetary physics...

Time is tangled to much together in space-time qontinuum...almost entangled to it as a Gordian knot!

But also, depended on the speed of the observer (Lorentz tranformations)...and to the gravity of the planet/ship/craft (Einstein general relativity)...

I would like to put an atomic clock in L4 or L5 & another on Earth...identical...and measure time with them for years! And I can bet with anyone that they will point differently...
Also, would put third on ISS...just to make sure that we have a 3rd reference point! ;)


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Message 1609394 - Posted: 5 Dec 2014, 7:36:41 UTC - in response to Message 1608634.  

Also, would put third on ISS...just to make sure that we have a 3rd reference point!

Keep up at the back there :-)

ACES is expected to be ready for launch in 2016 and have an 18-30 month operations phase.

ACES



It will nice to see if it all works Chris, a lot of money in this one.
Cheers everybody
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Message boards : Science (non-SETI) : Is the Universe Infinite?


 
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