Is Nature Symmetric? A Deeper Look

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    Nature Symmetric
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Discussion Overview

The discussion revolves around the concept of symmetry in nature, particularly in relation to physical laws and boundary conditions. Participants explore the implications of symmetry and directionality in experiments, questioning why certain phenomena appear to exhibit preferred directions despite the underlying laws being symmetric.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants propose that nature does not exhibit a preferred spatial direction, as demonstrated by the invariance of physical laws like Maxwell's equations regardless of laboratory orientation.
  • Others question the meaning of "the direction of the laboratory" and assert that the universe itself does not move, only objects within it do.
  • A participant argues that while the laws of nature may be symmetric, boundary conditions can introduce asymmetry, affecting the outcomes of experiments.
  • One participant suggests that the assumption of symmetric boundary conditions is flawed, leading to a misunderstanding of the problem.
  • Another participant raises the question of when and why symmetry in space and matter was violated, assuming they evolved from a symmetrical state.
  • There is a contention regarding whether the assumption of symmetry in boundary conditions is valid, with differing views on the nature of these conditions.

Areas of Agreement / Disagreement

Participants express differing views on the nature of symmetry and directionality in physical laws and boundary conditions. There is no consensus on whether boundary conditions should be assumed to be symmetric or on the implications of symmetry in the universe.

Contextual Notes

Participants reference the role of boundary conditions in determining outcomes of physical laws, highlighting that while laws may be symmetric, the conditions under which they are applied may not be. The discussion remains open-ended regarding the implications of these observations.

GiuseppeR7
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I guess that nature do not care about "directions". If I'm performing an experiment on (for example) light the result is invariant on the direction of the laboratory.
So why we observe directionality on the nature that we are observing around us?
Why "things" are definitively not symmetric? When the universe "was created" when and why it have taken a specific space direction?
 
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GiuseppeR7 said:
If I'm performing an experiment on (for example) light the result is invariant on the direction of the laboratory.

What is 'the direction of the laboratory'?

GiuseppeR7 said:
When the universe "was created" when and why it have taken a specific space direction?

I don't know what this means. The universe cannot move, only objects within the universe can move.
 
Just to be clear...if i have a lab here on Earth oriented to south the Maxwell equations (for example) are true if it is oriented to north the Mawell equations are still true and they have the same form. So nature does not have a preferred spatial direction. So why my home, for example, is facing North? Why it is not completely symmetric. Somewhere, sometime some physical phenomena have cleared displayed a preferred direction, why?
 
I don't think there's an answer to that. That just seems to be the way the laws of nature work.
 
ok
 
The laws of nature take the form of differential equations. In order to find a solution to a differential equation you need both the law and also a set of boundary conditions. Even if the law is symmetric a solution may be asymmetric if the boundary conditions are asymmetric.

Such is the case with your house. Maxwells equations do not pick out a North oriented house, but rather the boundary conditions do. As a result, even though Maxwells equations treat all directions the same, one side of your house will receive more light energy than another.
 
the house was just a metaphor...but supposing the problem to be true...why the BC are not symmetric? the problem is not solved but only transfered.
 
Why would you assume that the boundary conditions should be symmetric? This isn't a problem to be solved, just a mistaken assumption to correct.
 
I'm not talking about any pratical engineering problem. I'm just saying that space does not have any preferred direction, since no experiment, performed ideally, can spot in which direction we are pointing (just like the velocity, no experiment can say if we have speed or not...(some people say that velocity does not even exist for this reason)).
So, ASSUMING that space and the matter inside have evolved from a symmetrical state...when and why was the symmetry violated?
 
  • #10
GiuseppeR7 said:
I'm not talking about any pratical engineering problem.
Me neither. I am talking about the form of the laws of physics.
GiuseppeR7 said:
So, ASSUMING that space and the matter inside have evolved from a symmetrical state.
That is a bad assumption. The boundary conditions are not symmetrical.
 

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