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Author Topic:   Expanding time?
onifre
Member (Idle past 2981 days)
Posts: 4854
From: Dark Side of the Moon
Joined: 02-20-2008


Message 126 of 143 (495170)
01-21-2009 12:17 PM
Reply to: Message 124 by Larni
01-21-2009 10:25 AM


Re: Re-Expansion
Hi Larni,
Does this expansion have any effect on vacuum energy?
As I understand it, it is because of the vacuum energy density that there IS an expansion. It stays constant because there is no negative pressure(or positive gravitational force).
Does it get more diffuse as space expands?
Again, as I understand it, the expansion is at an accelerated pace, indicating that the vacuum energy density is still constant(positive). What I believe does change is the matter energy density. I believe it decreases, im not sure by how much though.

"I smoke pot. If this bothers anyone, I suggest you look around at the world in which we live and shut your mouth."--Bill Hicks
"I never knew there was another option other than to question everything"--Noam Chomsky

This message is a reply to:
 Message 124 by Larni, posted 01-21-2009 10:25 AM Larni has not replied

  
onifre
Member (Idle past 2981 days)
Posts: 4854
From: Dark Side of the Moon
Joined: 02-20-2008


Message 132 of 143 (495315)
01-22-2009 12:44 AM
Reply to: Message 131 by thief
01-21-2009 8:47 PM


Im skeptical of your intentions but...
Time is a dimensional quality..not a quantity...though we often speak of time as something we run out of.
You are confusing physics and the everyday world you live in. Time is a dimensional quality in general relativity, in physics, in cosmology. It is a dimensional quality when describing the space we experience. In this sense time has never been refered to as "running out".
As a dimensional quality...it is purely of our mindful efforts
It is purely of the mindful efforts of people much smarter than you and I to have figured out that time was a dimensional quality.
Divisions of length 'exists' only in our thoughts.
A distance traveled is metered for the sake of calculation
but the act of measurement does not generate mass nor speed.
Yes, and the tribes men who live in the rain forest have no use for a calculator. Time IS used for the sake of calculations, by people who are calculating! If you don't want to recognize time as a dimention, then don't. If you aren't calculating anything that requires you to take time into consideration, what do you care? However, if you are going to calculate something that required you to take time into consideration, then you better see it as a 'thing' that is a part of the geometry of the universe or you are going to fuck things up.
I am aware that extreme speed or extreme gravity 'warp' our perceptions,
Of what?
and the calculations to understand such things suggest even greater inconceivable effects...
What 'such things' are you talking about?
but to treat time as mass or energy,
Who is doing this? Who is treating time as mass or energy?
3 spatial dimensions and 1 time dimention describe the geometry of our universe...where's the problem?
Oni

"I smoke pot. If this bothers anyone, I suggest you look around at the world in which we live and shut your mouth."--Bill Hicks
"I never knew there was another option other than to question everything"--Noam Chomsky

This message is a reply to:
 Message 131 by thief, posted 01-21-2009 8:47 PM thief has replied

Replies to this message:
 Message 134 by thief, posted 01-22-2009 6:58 PM onifre has replied

  
onifre
Member (Idle past 2981 days)
Posts: 4854
From: Dark Side of the Moon
Joined: 02-20-2008


Message 135 of 143 (495557)
01-23-2009 11:31 AM
Reply to: Message 134 by thief
01-22-2009 6:58 PM


Hi theif,
Currently your post is going off topic so I won't continue to reply as to not clutter yet another BB and Cosmology thread with nonsense.
No offense,
- Oni

"I smoke pot. If this bothers anyone, I suggest you look around at the world in which we live and shut your mouth."--Bill Hicks
"I never knew there was another option other than to question everything"--Noam Chomsky

This message is a reply to:
 Message 134 by thief, posted 01-22-2009 6:58 PM thief has not replied

  
onifre
Member (Idle past 2981 days)
Posts: 4854
From: Dark Side of the Moon
Joined: 02-20-2008


Message 141 of 143 (496275)
01-27-2009 11:10 AM
Reply to: Message 140 by Agobot
01-25-2009 5:27 PM


thief writes:
I am aware that extreme speed or extreme gravity 'warp' our perceptions
onifre writes:
Of what?
Abogot writes:
Distance, straight line, time, colour, mass.
If you look at the way it is written, "warp our perception", it becomes nonsensical. Space is "warped" due to mass density thus it affects time, straight lines, color, etc.

"I smoke pot. If this bothers anyone, I suggest you look around at the world in which we live and shut your mouth."--Bill Hicks
"I never knew there was another option other than to question everything"--Noam Chomsky

This message is a reply to:
 Message 140 by Agobot, posted 01-25-2009 5:27 PM Agobot has not replied

Replies to this message:
 Message 142 by change of pressure, posted 06-14-2009 9:05 AM onifre has not replied

  
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