atom feed730 messages in org.kde.kde-cafeRe: http://www.linuxandmain.com/comme...
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391 earlier messages
Bob RaymondApr 17, 2002 9:45 am 
Timothy R. ButlerApr 17, 2002 9:46 am 
Roberto AlsinaApr 17, 2002 9:47 am 
Roberto AlsinaApr 17, 2002 9:50 am 
Roberto AlsinaApr 17, 2002 9:51 am 
Roberto AlsinaApr 17, 2002 9:56 am 
Ryan CummingApr 17, 2002 9:56 am 
Jason HarrisApr 17, 2002 10:08 am 
Timothy R. ButlerApr 17, 2002 10:12 am 
Timothy R. ButlerApr 17, 2002 10:16 am 
Roberto AlsinaApr 17, 2002 10:18 am 
Timothy R. ButlerApr 17, 2002 10:19 am 
Roberto AlsinaApr 17, 2002 10:22 am 
Roberto AlsinaApr 17, 2002 10:23 am 
Timothy R. ButlerApr 17, 2002 10:27 am 
Bob RaymondApr 17, 2002 10:34 am 
Timothy R. ButlerApr 17, 2002 10:37 am 
Bob RaymondApr 17, 2002 10:37 am 
Timothy R. ButlerApr 17, 2002 10:39 am 
Timothy R. ButlerApr 17, 2002 10:43 am 
Bob RaymondApr 17, 2002 10:43 am 
Jason HarrisApr 17, 2002 10:50 am 
Roberto AlsinaApr 17, 2002 10:57 am 
Roberto AlsinaApr 17, 2002 11:04 am 
Ryan CummingApr 17, 2002 11:04 am 
Roberto AlsinaApr 17, 2002 11:08 am 
Roberto AlsinaApr 17, 2002 11:11 am 
Roberto AlsinaApr 17, 2002 11:12 am 
Timothy R. ButlerApr 17, 2002 11:51 am 
Timothy R. ButlerApr 17, 2002 12:00 pm 
Timothy R. ButlerApr 17, 2002 12:04 pm 
Timothy R. ButlerApr 17, 2002 12:06 pm 
Eray OzkuralApr 17, 2002 12:14 pm 
Daniel CassidyApr 17, 2002 12:16 pm 
Roberto AlsinaApr 17, 2002 12:26 pm 
Roberto AlsinaApr 17, 2002 12:28 pm 
Daniel CassidyApr 17, 2002 12:28 pm 
Daniel CassidyApr 17, 2002 12:31 pm 
Roberto AlsinaApr 17, 2002 12:31 pm 
Daniel CassidyApr 17, 2002 12:32 pm 
Bob RaymondApr 17, 2002 12:33 pm 
Daniel CassidyApr 17, 2002 12:33 pm 
Daniel CassidyApr 17, 2002 12:35 pm 
Bob RaymondApr 17, 2002 12:45 pm 
Roberto AlsinaApr 17, 2002 12:49 pm 
Bob RaymondApr 17, 2002 12:50 pm 
Bob RaymondApr 17, 2002 12:51 pm 
Roberto AlsinaApr 17, 2002 12:56 pm 
Daniel CassidyApr 17, 2002 12:59 pm 
Daniel CassidyApr 17, 2002 1:00 pm 
289 later messages
Subject:Re: http://www.linuxandmain.com/comment/ed040702.html
From:Ryan Cumming (bodn@phalynx.dhs.org)
Date:Apr 17, 2002 11:04:38 am
List:org.kde.kde-cafe

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On April 17, 2002 10:22, Roberto Alsina wrote:

On Wed, 17 Apr 2002, Timothy R. Butler wrote:

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Sure, life isn't a spark. Life is a chemical reaction. There was more than enough activation energy present to start that chemical reaction.

Where did the energy come from? The big bang, you say. Where did the big bang come from? A small ball of highly compressed matter, you say. Where did that come from, oh, and why did it explode?

I think the most popular explanation these days is that it wa a random fluctuation in vacuum energy, but I won't claim to understand it.

Ah, that comes The Heisenberg Uncertainty Principle. The principle states that (delta-x)(delta-p) >= (h / 2). This means that the uncertainty in position times the uncertainty in momentum is greater than or equal to half of h (Plank's constant: 6.626*10^-34 Joule seconds).

The principle can be rewritten in terms of energy and time, so that (delta-E)(delta-t) >= (h / 2). This is where it gets interesting, because it allows for an "uncertainty" in the energy of a system over a certain time period. Seeing that mass and energy are the same thing (E=mc^2, for mass that is not in motion), it also allow for an uncertainty in the mass of a system.

What does this mean? Well, for a vacuum, where one would expect the total energy to remain at exactly zero, the amount of energy (and therefore matter) can be non-zero for a significant period of time. This "uncertain" mass are usually referred to as virtual particles, and the process of them being created is referred to as a vacuum fluctuation.

So, if the Universe was initially empty, matter -would- be spontaneously created, as governed by Heisenberg's Uncertainty Principle. And yes, this principle has been tested, and virtual particles are required for certain mechanisms in nature (neutron beta decay, the production of charm particles, and eta-c decay).

- -Ryan

- -Ryan -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org

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