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-   -   CAN ANYONE CALCULATE WHEN DID the ACCELERATING EXPANSION of the UNIVERSE BEGIN ? (http://www.spiritualforums.com/vb/showthread.php?t=124319)

Gem 28-08-2018 12:10 PM

I guess the simplest way is using hubble's law where velosity of receeding galaxy = hubble's constant X distance: v=hd


h is a function of (distance/time)/distance. Therefore, a series of calculations can be used to express hubble's constant as time. To reverse the acceleration, then, we need the inverse of that. I.e. 1/hubble time.


It's not particularly complicated in principle, and it's well explained here http://manini-hlphysics.blogspot.com...4-e65-e66.html

Rah nam 28-08-2018 12:38 PM

Sure this verse expands all the time.
Galaxies are created constantly.

To measure an expansion rate seams to be fool
hearted. How do we measure the expansion of consciousness?
After all, a verse expands as consciousness expands.

We could look back and determine the age of this verse according to the present rotation of the earth around the sun, and even that is not a constant. Using the present rotation we would come to just under ten billion rotations since the first release of consciousness that started this verse.

If we used the average rate of expansion, we could say this verse will continue to expand for an other half a billion of years before the retraction rate will be greater. As the retraction rate speeds up, we could say in less than a billion years this verse will not exist any longer, at least not in the form it is now.

Gem 28-08-2018 12:41 PM

This video is better and explains the hubble constant to hubble time conversion https://www.youtube.com/watch?v=svI6Io2cCTQ

Gem 28-08-2018 01:10 PM

Quote:

Originally Posted by Rah nam
Sure this verse expands all the time.
Galaxies are created constantly.



A a verse is a stanza in a song or poem so your use of it in this context is highly ambiguous.


Quote:

To measure an expansion rate seams to be fool
hearted. How do we measure the expansion of consciousness?
After all, a verse expands as consciousness expands.


Well, we know the speed of light and what it would be like to travel at that speed (be everywhere at once).



Quote:

We could look back and determine the age of this verse according to the present rotation of the earth around the sun, and even that is not a constant. Using the present rotation we would come to just under ten billion rotations since the first release of consciousness that started this verse.


Are you talking about the solar system?


Quote:

If we used the average rate of expansion, we could say this verse will continue to expand for an other half a billion of years before the retraction rate will be greater. As the retraction rate speeds up, we could say in less than a billion years this verse will not exist any longer, at least not in the form it is now.




There is nothing called a 'verse'.

Rah nam 28-08-2018 11:26 PM

There is nothing called a 'verse'.

You might call it uni-verse but there is nothing uni about this verse.
uni comes from unus = one.

I was given to understand there are as many verses as there are cells in my body. Yes, they are all one in fact but we don't talk about one single verse.


and by the way, the known laws of our physics will change very soon

Gem 29-08-2018 11:04 AM

Quote:

Originally Posted by Rah nam
There is nothing called a 'verse'.

You might call it uni-verse but there is nothing uni about this verse.
uni comes from unus = one.



I just call t universe because that's what people call it, so they can understand what I'm talking about.


Quote:

I was given to understand there are as many verses as there are cells in my body. Yes, they are all one in fact but we don't talk about one single verse.


Are you talking about the multiverse interpretation of quantum mechanics?


Quote:

and by the way, the known laws of our physics will change very soon




Do you have any reason to believe that?

OPVerma 09-11-2018 10:35 AM

SCIENTISTS GUESSTIMATE BEGINNING OF ACCELERATING EXPANSION SINCE 5 BILLION YEARS AGO
 
Wikipedia writes
'
'The expansion of the universe is thought to have been accelerating since the universe entered its dark-energy-dominated era roughly 5 billion years ago.'

Though they talk about dark energy, gravity etc. but scientists are unable to calculate mathematically and give an exact figure.The 5 billion yrs figure above is a guesstimate work.

Gem 09-11-2018 01:34 PM

Quote:

Originally Posted by OPVerma
Wikipedia writes
'
'The expansion of the universe is thought to have been accelerating since the universe entered its dark-energy-dominated era roughly 5 billion years ago.'

Though they talk about dark energy, gravity etc. but scientists are unable to calculate mathematically and give an exact figure.The 5 billion yrs figure above is a guesstimate work.

Well, based on the observations which were made, the expansion of the universe decelerated for a time after the big bang because, they theorise, the attractive force of gravity outweighed the repulsive force of dark energy when mass was 'closer together' in the early universe, but at at some point, the galaxies became far enough apart that dark energy began to predominate over gravity, and since then, expansion has been accelerating.

OPVerma 10-03-2019 08:28 AM

Quote:

Originally Posted by Gem
Well, based on the observations which were made, the expansion of the universe decelerated for a time after the big bang because, they theorise, the attractive force of gravity outweighed the repulsive force of dark energy when mass was 'closer together' in the early universe, but at at some point, the galaxies became far enough apart that dark energy began to predominate over gravity, and since then, expansion has been accelerating.



and since then ...

So what is that figure, speaking in mathematical language ?

Gem 10-03-2019 09:37 AM

Quote:

Originally Posted by OPVerma
and since then ...

So what is that figure, speaking in mathematical language ?





I can't do that kind of math.


https://www.youtube.com/watch?v=aPStj2ZuXug


https://www.youtube.com/watch?v=JDmKLXVFJzk


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