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What is time?
University of Helsinki ^ | 4/15/05 | Simo Salmela

Posted on 04/16/2005 4:19:09 PM PDT by beavus

The concept of time is self-evident. An hour consists of a certain number of minutes, a day of hours and a year of days. But we rarely think about the fundamental nature of time.

Time is passing non-stop, and we follow it with clocks and calendars. Yet we cannot study it with a microscope or experiment with it. And it still keeps passing. We just cannot say what exactly happens when time passes.

Time is represented through change, such as the circular motion of the moon around the earth. The passing of time is indeed closely connected to the concept of space.

According to the general theory of relativity, space, or the universe, emerged in the Big Bang some 13.7 billion years ago. Before that, all matter was packed into an extremely tiny dot. That dot also contained the matter that later came to be the sun, the earth and the moon – the heavenly bodies that tell us about the passing of time.

Before the Big Band, there was no space or time.

“In the theory of relativity, the concept of time begins with the Big Bang the same way as parallels of latitude begin at the North Pole. You cannot go further north than the North Pole,” says Kari Enqvist, Professor of Cosmology.

One of the most peculiar qualities of time is the fact that it is measured by motion and it also becomes evident through motion.

According to the general theory of relativity, the development of space may result in the collapse of the universe. All matter would shrink into a tiny dot again, which would end the concept of time as we know it.

“Latest observations, however, do not support the idea of collapse, rather inter-galactic distances grow at a rapid pace,” Enqvist says.

If you want to know more about the topic, visit Kari Enqvist’s website at http://www.physics.helsinki.fi/~enqvist/.

Text: Simo Salmela Picture: ESO www.helsinki.fi/digitalcommunications

Translation: Valtasana Oy


TOPICS: Miscellaneous; Philosophy
KEYWORDS: astronomy; bigband; bigbang; cosmology; creationism; expansiontheory; physics; poofism; thefireinwhichweburn; time
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To: djf
It seems to me that the atomic clock experiments that confirm relativistic slowdowns in the "faster" airplane refute this idea:

"Relativity (or rather, a relative perspective) says the ball is (or can be perceived as) being motionless, and in fact the house, the planet, the universe is now spinning."

121 posted on 04/16/2005 8:28:09 PM PDT by secretagent
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To: USCG SimTech
This Universe is within a bandwidth of resonance from the highest frequency (smallest resonant cavity.. Planck, perhaps)

But what freqs?(what oscillates or potentially oscillates) Thanks for your thought.

122 posted on 04/16/2005 8:40:49 PM PDT by AndrewC (Darwinian logic -- It is just-so if it is just-so)
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To: RadioAstronomer

Well, I can be reached at Pennsylvania 65000. Take the Chattanooga Choo-Choo and Jump over about on o'clock. If you're In the Mood to wear a String of Pearls, tommorrow won't be a Gloomy Sunday.


123 posted on 04/16/2005 8:48:30 PM PDT by Doctor Stochastic (Vegetabilisch = chaotisch is der Charakter der Modernen. - Friedrich Schlegel)
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To: beavus

"...if it's December 1941 in Casablanca, what time is it in New York?"


124 posted on 04/16/2005 8:50:08 PM PDT by Doctor Stochastic (Vegetabilisch = chaotisch is der Charakter der Modernen. - Friedrich Schlegel)
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To: VadeRetro

Well, Ars Nova was before Purcell, and Ars Antigua pre-dated Ars Nova.


125 posted on 04/16/2005 8:52:34 PM PDT by Doctor Stochastic (Vegetabilisch = chaotisch is der Charakter der Modernen. - Friedrich Schlegel)
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To: Boiler Plate

Mañana doesn't mean "tomorrow"; it means "not today."


126 posted on 04/16/2005 8:58:34 PM PDT by Doctor Stochastic (Vegetabilisch = chaotisch is der Charakter der Modernen. - Friedrich Schlegel)
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Comment #127 Removed by Moderator

Comment #128 Removed by Moderator

Comment #129 Removed by Moderator

To: Tax-chick

Even if all matter was packed into an extremely tiny dot, the dot existed, and therefore time existed. Time and matter are connected...so it is approprite to refer to before the Big Bang (a theory which I disagree with - where did the tiny dot come from - and how does the Big Bang answer the question of the origin of information - an element contained in the DNA of every living cell.)


130 posted on 04/16/2005 10:55:07 PM PDT by LiteKeeper (The radical secularization of America is happening)
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To: Doctor Stochastic
Mañana (literally meaning morning) doesn't get started till 10:30. Getting organized takes till lunch (1:30 till 4:00) figuring out what has to be bought and then going to get it takes the rest of the day(7:00PM). The process is repeated every day till you grow so frustrated you do the work yourself. Then the contractor comes back the next day demanding payment. What a great country, and we wonder way they want to leave.
131 posted on 04/16/2005 11:05:33 PM PDT by Boiler Plate
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To: doc30

I'm no physicist, but could the manifestation of Time be related to cosmic inflation?

Don't worry Alan Greenspan is all over it.


132 posted on 04/16/2005 11:09:47 PM PDT by Boiler Plate
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To: Doctor Stochastic

"uh, my watch stopped"


133 posted on 04/16/2005 11:47:47 PM PDT by Teslas Pigeon
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To: Tunehead54

134 posted on 04/17/2005 4:38:58 AM PDT by hflynn
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To: LiteKeeper

If I understand them correctly, the proponents of materialist theory of the universe insist that there is no connection between the Big Band and the origin of life. And I personally don't find Big Band romantic at all; it's white noise to me.


135 posted on 04/17/2005 5:47:08 AM PDT by Tax-chick (Will do laundry for food.)
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To: 19th LA Inf

Ok...if you are traveling at the speed of light...and you turn your headlights on...what happens?


136 posted on 04/17/2005 6:02:32 AM PDT by surfer
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To: PatrickHenry; RadioAstronomer

"Time is the because with which some dolls are stuffed." - e e cummings


137 posted on 04/17/2005 8:18:35 AM PDT by longshadow
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To: PatrickHenry
.... were it not for time, everyone would be flatulent simultaneously ....

Ah; the "Flatulence Orthogonal Temporality Theorem!" ("FOTT")

138 posted on 04/17/2005 8:26:44 AM PDT by longshadow
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To: RadioAstronomer

139 posted on 04/17/2005 8:43:22 AM PDT by RightWingAtheist (Creationism is not conservative!)
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To: beavus

"What is time?"

I dunno. . .but I know I never have enough of it.


140 posted on 04/17/2005 8:47:02 AM PDT by Gunrunner2
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