How elementary particles form matter

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Discussion Overview

The discussion revolves around the nature of elementary particles and their role in forming matter, particularly focusing on the concept of physical extension and interactions at a distance. It explores theoretical and conceptual aspects of particle physics and matter formation.

Discussion Character

  • Exploratory, Conceptual clarification, Debate/contested

Main Points Raised

  • Some participants question how elementary particles, described as point-like, can form matter with observable physical extension.
  • One participant suggests that the interactions between particles, particularly electromagnetic interactions, are responsible for the physical properties of matter, despite the particles being point-like.
  • Another participant notes that the nucleus and electrons in atoms are not in direct contact, highlighting the concept of distance at the atomic level.
  • A later reply emphasizes that much of what is perceived as matter is actually empty space, suggesting a different perspective on the nature of physical extension in matter.

Areas of Agreement / Disagreement

Participants express differing views on the implications of elementary particles being point-like and how this relates to the observable properties of matter. The discussion remains unresolved with multiple competing perspectives presented.

Contextual Notes

Some limitations include the dependence on definitions of physical extension and the nature of interactions at the quantum level, which are not fully resolved in the discussion.

LeInvertedPenguine
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Hello,

So i wonder how elementary particles which are said to have no physical extension on a larger scale are able to form what is known to us as matter? Aka stuff with an observable physical extension.
 
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That elementary particles are point-like does not mean that they cannot interact at a distance. What stops you from smashing your hand through the table is really electromagnetic interactions between the molecules in the table and the molecules in your hand. Just as it is electromagnetic interactions that keep the molecules together. Most of what you experience in everyday life that is not due to gravity is due to electromagnetic interactions.
 
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The nucleus and electrons in atoms are not touching - they are about an Angstrom apart.
 
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LeInvertedPenguine said:
Hello,

So i wonder how elementary particles which are said to have no physical extension on a larger scale are able to form what is known to us as matter? Aka stuff with an observable physical extension.
To add to what others have already said, 99%+ of what you think of as matter with "observable physical extension." in 3D is actually totally empty space.
 
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Ok, thanks everyone! Your answers helped me understand how i went about it wrong :)
 

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