What ways are there for something to lose mass?

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Discussion Overview

The discussion centers on the various ways an object can lose mass, exploring both feasible and theoretical methods. Participants consider physical processes, chemical reactions, and conceptual frameworks related to mass loss.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Some participants propose that mass can be lost through processes like antimatter interactions, fission, and fusion, which convert mass into energy.
  • Burning an object is suggested as a method of mass loss, where gas products and smoke particles are released.
  • Evaporation, dissolving in liquid, and emitting particles (neutrons or alpha particles) are mentioned as additional ways to lose mass.
  • One participant humorously notes the loss of mass in a bank account, indicating a lighter tone in part of the discussion.
  • Planets losing their atmosphere is raised as a natural example of mass loss, particularly in smaller planets like Mars.
  • In the context of relativity, mass is described as related to energy content, suggesting that energy loss through radiation or heat can lead to a reduction in mass.
  • Some participants differentiate between "removing" and "destroying" matter, indicating a conceptual nuance in the discussion.
  • Methods such as radioactive decay, physical impact, and heating to incandescence are also proposed as ways to lose mass.
  • A participant introduces the idea that mass can be defined by the system boundaries, where mass can enter or leave a defined system.
  • A rocket is cited as a practical example of mass loss through fuel exhaustion, emphasizing momentum conservation.

Areas of Agreement / Disagreement

Participants express a range of views on the methods of mass loss, with no consensus reached on a definitive list or understanding of the processes involved. Multiple competing views remain regarding the definitions and implications of mass loss.

Contextual Notes

Some discussions involve assumptions about the definitions of mass and system boundaries, which may affect interpretations of the methods proposed. The distinction between removing and destroying matter is noted but not resolved.

MatNX
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How can san object lose mass? You can use Antimatter or Fission or Fusion to turn it into energy. Also, one can just cut a piece of the object off. But are there any other ways to remove matter from an object? (Feasable and theoretical)
 
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Burning it, some of it will go away as gas products and smoke particles. I'm not sure what you are looking for here.
 
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scottdave said:
Burning it, some of it will go away as gas products and smoke particles. I'm not sure what you are looking for here.
Sure, that could work too, but I´'d add that to cutting things off. I just want to know in what ways matter could be "destroyed" or removed from an object.
 
The mass of money in my bank account keeps shrinking mysteriously. Just kidding. :cool:
 
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Planets lose their atmosphere all the time. It just dribbles off in a trail behind us.
Smaller planets lose their atmo faster.
Once you get like Mars, any liquid water is immediately turned to vapor when exposed to the atmosphere, and subsequently leaked behind the planet.
Mars used to have a lot more mass.
 
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In relativity, mass turns out to be the energy content of a body when it is at rest divided by ##c^2##. Any process by which it loses energy (light, heat radiation, heat conduction, etc) reduces its mass a tiny bit. Otherwise I think you are limited to the many and varied ways you can remove a chunk of matter.
 
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Evaporation, dissolving in liquid, emitting neutrons or alpha particles...
 
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MatNX said:
Sure, that could work too, but I´'d add that to cutting things off. I just want to know in what ways matter could be "destroyed" or removed from an object.
"Remove" and "destroy" are very different things.
 
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  • #10
MatNX said:
How can an object lose mass?
Change where you draw the lines around the object.
 
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  • #11
--radioactive decay
--hitting it really hard with an axe
--heat it to the point of incandescence

diogenesNY
 
  • #12
So if we are not talking about matter-antimatter annihilations, then everything else is just matter (mass) moving around (fission or chemical reaction or gasses escaping or "cutting some off"). If you define a system, then mass can move into the system boundary from the surroundings, or mass can leave the system and go to the surroundings.
 

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