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Topic: Is there a fixed amount of energy in the universe?  (Read 29962 times)

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Offline P-man

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Re: Is there a fixed amount of energy in the universe?
« Reply #15 on: August 31, 2006, 12:40:10 PM »
So conservation of energy in mass. Does that mean a vaccum cannot conserve energy?
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Offline xiankai

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Re: Is there a fixed amount of energy in the universe?
« Reply #16 on: August 31, 2006, 07:44:11 PM »
a perfect vacuum still has zero point energy in a zero point field, the minimum energy that cannot be removed.

it means rather; that energy can be converted to mass and vice versa.

one shouldn't think of energy and mass as seperate; they are one and the same, and nature favours no specific state.
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Offline P-man

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Re: Is there a fixed amount of energy in the universe?
« Reply #17 on: August 31, 2006, 08:32:37 PM »
That was what I was trying to explain. Energy is conserved through mass, which makes them, as you said, basically one thing. Unless you seperate them, of course. ;)
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Offline english

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Re: Is there a fixed amount of energy in the universe?
« Reply #18 on: August 31, 2006, 09:00:45 PM »
So if matter and energy are both in duality and neither is thus created or destroyed, then this must mean that the Universe began with a fixed amount of energy that has been continuously recycling itself ever since?

Offline Mitch

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Re: Is there a fixed amount of energy in the universe?
« Reply #19 on: August 31, 2006, 10:44:47 PM »
KV: Yes, and no. Depending who you ask. Most physicists will say the amount of energy the universe had at the beginning is what determined the fundamental constants in our universe, speed of light, etc. If the universe had different initial condition then we would have completely different fundamental constants; that is what string theory is concerned about and occurs in the 9th dimension.
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Offline Will

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Re: Is there a fixed amount of energy in the universe?
« Reply #20 on: September 01, 2006, 04:43:56 AM »
If the universe had different initial condition then we would have completely different fundamental constants; that is what string theory is concerned about and occurs in the 9th dimension.

You mean the 8th dimension? :P
(consequently occurs in 9th and 10th dimensions too)

Offline Mitch

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Re: Is there a fixed amount of energy in the universe?
« Reply #21 on: September 02, 2006, 08:13:09 AM »
Sure, why not.
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Offline edwinksl

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Re: Is there a fixed amount of energy in the universe?
« Reply #22 on: October 04, 2006, 09:56:25 AM »
I don't know why, but I just have this idea that the Universe started off with zero energy. This idea probably pops out because of all the negative energies, e.g. gravitational potential energies, electrical potential energies, that I see when I was revising my physics. :D

Offline english

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Re: Is there a fixed amount of energy in the universe?
« Reply #23 on: October 04, 2006, 11:51:26 PM »
I don't know why, but I just have this idea that the Universe started off with zero energy. This idea probably pops out because of all the negative energies, e.g. gravitational potential energies, electrical potential energies, that I see when I was revising my physics. :D

And where's your paper on this?

 :P

Offline edwinksl

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Re: Is there a fixed amount of energy in the universe?
« Reply #24 on: October 05, 2006, 12:30:47 AM »
I don't know why, but I just have this idea that the Universe started off with zero energy. This idea probably pops out because of all the negative energies, e.g. gravitational potential energies, electrical potential energies, that I see when I was revising my physics. :D

And where's your paper on this?

 :P

I have no paper on this hahaha. I am not even in university yet. :D

Offline FeLiXe

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Re: Is there a fixed amount of energy in the universe?
« Reply #25 on: October 09, 2006, 03:28:06 PM »
that's a cool thought. keep it secret, work it out and publish :-)

but I guess the mass of any atom equals much more than the bonding energy of electrons and nucleons

I am still wondering though: what if two particles appear whose bonding energy corresponds to their masses?
« Last Edit: October 09, 2006, 03:33:09 PM by FeLiXe »
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Re: Is there a fixed amount of energy in the universe?
« Reply #26 on: October 14, 2006, 01:19:12 AM »
????

Offline Borek

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Re: Is there a fixed amount of energy in the universe?
« Reply #27 on: October 14, 2006, 03:14:24 AM »
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Offline Donaldson Tan

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Re: Is there a fixed amount of energy in the universe?
« Reply #28 on: October 17, 2006, 03:44:39 PM »
"Say you're in a [chemical] plant and there's a snake on the floor. What are you going to do? Call a consultant? Get a meeting together to talk about which color is the snake? Employees should do one thing: walk over there and you step on the friggin� snake." - Jean-Pierre Garnier, CEO of Glaxosmithkline, June 2006

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