Mass - What makes something have it?

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Discussion Overview

The discussion centers around the concept of mass, particularly what constitutes mass and the relationship between mass and energy. Participants explore theoretical aspects, including the role of the Higgs field and the nature of photons and hypothetical particles like gravitons.

Discussion Character

  • Exploratory
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant questions whether the lack of mass in photons is solely due to their non-interaction with the Higgs field and seeks to understand why mass exists.
  • Another participant suggests that the conversion between mass and energy, as described by E=mc², indicates a fundamental difference between matter and energy.
  • Some participants assert that while energy can exist without effective mass, certain conditions, such as spin or acceleration, may be necessary for mass to be present.
  • There is a query about whether the hypothetical graviton would also lack mass due to non-interaction with the Higgs field, paralleling the discussion about photons.
  • One participant speculates that if the Higgs field is real, it must interact with particles in a way that results in a net mass of zero, describing it as an oscillation phenomenon.

Areas of Agreement / Disagreement

Participants express differing views on the relationship between mass and energy, the role of the Higgs field, and the properties of photons and hypothetical particles like gravitons. The discussion remains unresolved with multiple competing perspectives.

Contextual Notes

There are limitations in the assumptions made about the Higgs field and the nature of mass, as well as the speculative nature of the discussion regarding hypothetical particles.

FeDeX_LaTeX
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Hello;

What is mass? For example, a photon has no mass, because it does not react with the Higgs field (is this the only reason)? Why does mass exist?

Thanks.
 
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Mass can be converted into energy and visa versa. So there is a clue here. I suppose you just need to answer the question 'What is the difference between matter and energy?'
 
So if something has energy it has mass, by E=mc^2, right? Okay...
 
FeDeX_LaTeX said:
So if something has energy it has mass, by E=mc^2, right? Okay...

No not entirely true. Something can have energy but no 'effective' mass , photons for example (some of the time). To have mass the energy equivalence has to have either an element of spin (matter) or an acceleration/deceleration. Don't quote me on that but that's how I see it.
 
So does a photon have no mass because it does not interact with the Higgs field?

Is that the same with the hypothetical graviton too?
 
FeDeX_LaTeX said:
So does a photon have no mass because it does not interact with the Higgs field?

Is that the same with the hypothetical graviton too?

I'm not totally sure, but assuming the Higgs field is real I would say that it must interact with it. It gives then takes away with the net result of zero - it's an oscillation thing :smile:.

In so far that the hypothetical graviton will have anything to do with gravity , more than any other virtual particle, is remote. Disclaimer : here again, please don't take my word for it, I think all this a bit on the edge of current knowledge.
 

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