What happens in a particle accelerator?

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Discussion Overview

The discussion revolves around the nature of energy in the context of particle collisions in accelerators, exploring whether energy is a physical entity or merely a mathematical construct. Participants debate the implications of energy conservation during particle collisions and the transformation of energy into mass and kinetic energy.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Technical explanation

Main Points Raised

  • Some participants assert that energy is an arbitrary mathematical quantity, questioning its physicality in the context of particle collisions.
  • Others argue that energy is a physical quantity, emphasizing its role in conservation laws and its foundational importance in quantum mechanics.
  • A participant suggests that energy is not something that "floats" around but is conserved and transformed during collisions, with some energy becoming mass and some converted to kinetic energy.
  • There is a discussion about the relationship between energy and forces, with claims that if energy is considered unphysical, then forces must also be viewed similarly.
  • One participant expresses confusion over how energy can be considered a physical entity when its value can vary depending on the reference frame, using the example of a moving baseball's energy relative to different systems.
  • Another participant mentions that energy cannot be pointed to in space like a force can, but acknowledges complexities such as electromagnetic radiation and vacuum energy.

Areas of Agreement / Disagreement

Participants do not reach a consensus on whether energy is a physical entity or an arbitrary construct. Multiple competing views remain, with some emphasizing the physicality of energy and others questioning it.

Contextual Notes

The discussion includes unresolved assumptions about the definitions of energy and physicality, as well as varying interpretations of energy conservation in particle collisions.

  • #31
Jd0g33 said:
Energy is not matter, it governs how matter behaves. It doesn't take up space. Is this accurate?
Yes, essentially.
 
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  • #32
looks like the foggy skies have cleared in this thread after all. :)
So you now think you understood the answer to your question Jd0g33 ?
 
  • #33
Crazymechanic said:
looks like the foggy skies have cleared in this thread after all. :)
So you now think you understood the answer to your question Jd0g33 ?

Ya I do. I also realize the importance of proper terminology haha. This thread could have ended in one post if I used the correct words to represent my thoughts. But still, what's the deal with all the animosity around here?
 
  • #34
Jd0g33 said:
But still, what's the deal with all the animosity around here?
The problem was this statement:
Jd0g33 said:
Energy is just an arbitrary mathematical quantity.
That is a statement that is strongly associated with all sorts of unpleasant crackpots that people here have argued with in the past. When you said that it made anyone who has been around a while extremely suspicious of your motives.
 
  • #35
Just like what Dale just said , no matter how intellectual , open minded or objective some people are they still are just people and we all even if only in our thoughts still judge others by how we perceive them and since we cannot read others thoughts directly then sometimes we make these misunderstandings , so basically from my own experience with topics , and the ones who know me know this very well , explaining yourself as good and accurate as you possible can is actually key to getting something out of an internet forums like this.
 
  • #36
The best way to view energy is to associate it with something that a particle or field carries around with it. You'd never think to talk about "pure momentum" without referencing a particle or a field, and the same is true for energy. Energy is just a bit more abstract in some ways, because it's a scalar quantity rather than a vector, and we tend to think of vectors as living in some space which we map onto the real world, whereas we don't always think of scalars in that way.

But energy, momentum, and other invariants as describe above are things which get exchanged and shuffled around when particles interact with each other. However, the fact that these things are invariant, or conserved, is a reflection of the physical laws which govern those interactions.
 

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