Why sub-classical physics and quantum physics

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Discussion Overview

The discussion explores the relationship between classical physics and quantum physics, questioning the necessity of distinguishing between the two frameworks. It touches on theoretical implications and the limitations of classical physics in explaining phenomena at atomic and sub-atomic scales.

Discussion Character

  • Exploratory, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant questions the concept of "sub-classical" physics and its implications for understanding the relationship between classical and quantum physics.
  • Another participant explains that classical physics serves as a good approximation for macroscopic behavior but fails to adequately describe microscopic phenomena, which are more complex and counter-intuitive.
  • A different viewpoint suggests that classical physics can be viewed as a special case of quantum mechanics, applicable to large masses and objects where quantum effects are negligible.
  • One participant expresses gratitude for the clarification provided in the discussion.

Areas of Agreement / Disagreement

Participants present multiple competing views regarding the relationship between classical and quantum physics, with no consensus reached on the necessity of distinguishing between the two.

Contextual Notes

The discussion includes varying interpretations of the terms used, such as "sub-classical," and highlights the complexity of transitioning from classical to quantum descriptions without resolving the underlying assumptions.

chrisjiang
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Why sub-classical physics and quantum physics, can not be unity between the two up?
 
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What do you mean by "sub-classical"?
 
Sorry, I am a Chinese, English is not so good. I mean about the classical physics "and" quantum physics ", why should distinguish respectively
 
With classical physics you can't compute and examine the physics of the too small, at the level of atoms and sub-atomic particles. Classical physics is basically a very good approximation of how the macroscopic worls behaves, but when you examine the microscopic everything is so more complex and sometimes counter-intuitive. Its possible to use quantum physics to calculate macroscopic behavior, but it would imply too many calculations.
 
Actually, classical physics are special case of quantum mechanics for big masses, big objects and trajectories. In macroscopic world quantum effects are neglectible.
 
I see, thank you
 

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