E/M Constant: Mass Conversion in Universe

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The discussion centers on the relationship between mass and energy in the universe, specifically referencing the equation E=mc^2. It clarifies that while the speed of light is constant, this does not imply a conservation law for mass and energy. The first law of thermodynamics states that the total mass and energy in the universe remains unchanged, but mass-energy equivalence does not dictate a fixed proportion between the two. Participants emphasize that E represents the energy associated with mass, not the total energy of the universe. The conversation concludes with an acknowledgment of the clarified concepts.
nil1996
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As the speed of light is constant in the universe, E/M should be constant.
Suppose that in some corner of universe mass is being converted in energy. So there must be some another corner of universe where mass is being converted into energy at the same time.Is my argument correct??
 
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nil1996 said:
As the speed of light is constant in the universe, E/M should be constant.
Suppose that in some corner of universe mass is being converted in energy. So there must be some another corner of universe where mass is being converted into energy at the same time.Is my argument correct??

Sorry, but this makes no sense.

You are confusing an equation that describes the conversion of one to another with a conservation law. That equation is not a conservation law just because c is a constant.

Zz.
 
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E=mc^2 is an equation that describes the constant of proportionality between an object's rest mass, and the energy that mass contains.

The sum total of mass and energy in the universe has to remain unchanged by the first law of thermodynamics, but mass energy equivalence does not indicate that there must be a certain proportion between the two when you sum all the mass and energy in the universe.
 
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thanks,
i was thinking that E represents energy of universe while M mass of universe ant that equation works as conservation of energy.
 
nil1996 said:
thanks,
i was thinking that E represents energy of universe while M mass of universe ant that equation works as conservation of energy.
E would represent all the energy due to all the mass in the universe, not the total energy in the universe. Hope that makes sense
 
sigma_ said:
E would represent all the energy due to all the mass in the universe, not the total energy in the universe. Hope that makes sense

yes got now
Thanks :thumbs:
 
So I know that electrons are fundamental, there's no 'material' that makes them up, it's like talking about a colour itself rather than a car or a flower. Now protons and neutrons and quarks and whatever other stuff is there fundamentally, I want someone to kind of teach me these, I have a lot of questions that books might not give the answer in the way I understand. Thanks
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