| Topic: |
Science > Physics |
| User: |
"Don1" |
| Date: |
26 Sep 2005 11:41:16 AM |
| Object: |
Momentum vs energy |
Momentum is one directional (linear motion) and can be transfered from
one body to another directly without significant losses:
Energy is multi-directional (expansion) and in order to transfer energy
from one body to another without significant losses it must be
mechanically confined and directed.
Don
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| User: "PD" |
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| Title: Re: Momentum vs energy |
26 Sep 2005 11:41:31 PM |
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Don1 wrote:
Momentum is one directional (linear motion)
Not quite but close. Linear momentum is conserved separately in each of
three independent directions. The same is true for angular momentum.
This means that there are really six independent statements of
conservation of momentum in any system.
and can be transfered from
one body to another directly without significant losses:
This is true for energy as well. Energy is conserved perfectly, as far
as we can tell.
Energy is multi-directional (expansion)
I wouldn't say it that way. I would say that it is direction-agnostic;
that is, it doesn't care about direction. This does NOT mean that
energy needs to be sent in all directions at once.
and in order to transfer energy
from one body to another without significant losses it must be
mechanically confined and directed.
I'm not sure what you think energy is lost to. Can you give an example?
PD
Don
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| User: "Autymn D. C." |
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| Title: Re: Momentum vs energy |
27 Sep 2005 12:07:59 PM |
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PD wrote:
This is true for energy as well. Energy is conserved perfectly, as far
as we can tell.
You are a liar. You have no idea what that energy's doing when you
cannot track all of it. And it is crossing the sustem's boundaries all
the time. The universe is nonconservative everywhere.
I'm not sure what you think energy is lost to. Can you give an example?
I don't think he considers fotons to have energy.
-Aut
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| User: "Sam Wormley" |
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| Title: Re: Momentum vs energy |
26 Sep 2005 11:45:23 AM |
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Don1 wrote:
Momentum is one directional (linear motion) and can be transfered from
one body to another directly without significant losses:
Momentum is conserved
http://scienceworld.wolfram.com/physics/ConservationofMomentum.html
http://scienceworld.wolfram.com/physics/Momentum.html
Energy is multi-directional (expansion) and in order to transfer energy
from one body to another without significant losses it must be
mechanically confined and directed.
Energy is conserved
http://scienceworld.wolfram.com/physics/ConservationofEnergy.html
http://scienceworld.wolfram.com/physics/Energy.html
Don
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