Could this explain how evaporation of matter occurs in the universe?

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Discussion Overview

The discussion revolves around the concept of whether matter can "evaporate" or be converted into energy over time, particularly in the context of the universe's evolution since the Big Bang. Participants explore the implications of mass loss in stellar processes and the formation of celestial bodies, questioning the relationship between mass and energy and its effects on the observable universe.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • Some participants propose that matter may be converted into energy, suggesting that this could imply a historical abundance of matter in the universe that has since decreased.
  • Others argue that the heat generated during the formation of solar systems primarily results from gravitational compression and friction, rather than direct mass-to-energy conversion.
  • A participant mentions that while there is a small mass loss from stellar fusion, it is negligible compared to the total mass of the universe.
  • Some contributions emphasize that the conservation of charge must hold, indicating that mass loss does not affect the charge-to-mass ratio significantly.
  • There is a contention regarding the interpretation of mass loss, with some asserting that it can be viewed as annihilation of mass when systems reach lower energy states.
  • Participants discuss the implications of energy loss in gravitational systems and its relation to entropy, with varying interpretations of how mass and energy interact.

Areas of Agreement / Disagreement

Participants express differing views on the mechanisms of mass loss and its implications for the universe's history. There is no consensus on whether matter can be considered to "evaporate" or how significant the mass loss is in the context of the universe's overall mass.

Contextual Notes

Discussions include assumptions about the nature of energy and mass conversion, the role of gravitational forces in energy loss, and the definitions of terms like "evaporate" and "annihilate." Some mathematical relationships and physical principles are referenced but remain unresolved in the context of the discussion.

  • #31


Chronos said:
The laws of thermodynamics [still well regarded by mainstream scientists] forbid mass loss. I sense fundamentally flawed logic here.

Laws of thermodynamics says spontaneous heat flow can only flow from hot to cold. Yet heat is generated by burning a fuel, such as wood or coal. While not spontaneous, the energy needed get a piece of wood or coal burning is potentially less than the energy released by burning wood or coal, provided that a chain reaction be sufficiently sustained. Heat energy is lost by the wood or coal. Therefore, the heat energy must have been stored in some inert form before being released through ignition. In the case for radioactive materials, this occurs through E=mc^2. A simple extension of this principle would imply that E=mc^2 also applies for chemicals, although the value of chemical energy is so small in relation to the mass-energy of its reactants, that many scientists consider it non-existent. However, given the overwhemling support for E=mc^2, I have very little doubt that E=mc^2 (which is actually defined as E^2=(mc^2)^2+(pc)^2 according to the law of mass-energy equivalence) applies (though not very practically) for just about any event that produces radiation (including the acceleration of charged particles). In my opinion, no credible scientist would disagree that the equation applies in the fusion and fission of nuclear matter as made obvious by the nuclear binding energy curve.
 
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  • #32


"In the case for radioactive materials, this occurs through E=mc^2. A simple extension of this principle would imply that E=mc^2 also applies for chemicals, although the value of chemical energy is so small in relation to the mass-energy of its reactants, that many scientists consider it non-existent."

are you implying that mass is converted to energy in the chemical reaction of combustion? you would be wrong if you are... my regards if i misunderstood you.
 
  • #33
shamrock5585 said:
"In the case for radioactive materials, this occurs through E=mc^2. A simple extension of this principle would imply that E=mc^2 also applies for chemicals, although the value of chemical energy is so small in relation to the mass-energy of its reactants, that many scientists consider it non-existent."

are you implying that mass is converted to energy in the chemical reaction of combustion? you would be wrong if you are... my regards if i misunderstood you.

Actually, there is no consensus as to which is right. For example, see:

But in this scheme, matter is conserved -- there is no loss or gain in the mass of the chemical species involved.
http://www.chemcases.com/nuclear/index.htm

Law of Conservation of Matter: During an ordinary chemical change, there is no detectable increase or decrease in the quantity of matter.
http://www.cartage.org.lb/en/themes/Sciences/Chemistry/Generalchemistry/Energy/LawofConservation/LawofConservation.htm

Nuclear chemistry forces us to modify the Law of Conservation of Mass to include an energy term as well. The energy term is derived from Albert Einstein's famous E=mc2 equation.
http://www2.ucdsb.on.ca/tiss/stretton/CHEM2/nuc02.htm

The specialization in the sciences has not required the observance of certain facts except within the fields which these certain facts become experimentally important. Just because a fact is observed in one field in not another doesn't mean it's entirely wrong, it may just mean a fact may be a pertinent in one field and not another.
 
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  • #34


in a recent article from the astrophysical journal dated oct1. it explains that when antimatter comes into contact with protons or electrons, the result is annihilation with the emmition of gamma rays containing a significant amount of energy directed in opposite directions.
 

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