Mass problem or something of a sort (E=mc^2)

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SUMMARY

The discussion centers on the application of Einstein's equation E=mc² at the intersection of quantum mechanics and classical physics. Participants clarify that E=mc² provides the total energy of an object with mass at rest, applicable in both realms. Quantum mechanics universally applies to all systems, while classical physics offers accurate approximations for larger objects. The conversation emphasizes the absence of a fixed boundary between quantum and classical descriptions.

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  • Understanding of Einstein's equation E=mc²
  • Basic principles of quantum mechanics
  • Fundamentals of classical physics
  • Concept of quantum tunneling
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  • Explore the implications of E=mc² in various physical systems
  • Study quantum tunneling and its mathematical models
  • Investigate the transition from quantum mechanics to classical physics
  • Learn about energy states and barriers in quantum systems
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Students of physics, educators, and anyone interested in the relationship between quantum mechanics and classical physics, particularly those seeking to deepen their understanding of energy concepts and quantum phenomena.

Nikola Kolev
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Hi guys!
My question is kinda stupid and I'm new here so:
At the border between the quantum and classics worlds how E=mc^2 works?
Like in which states you'll have quantum tunnelling, in which just the classic classical way of not passing the barrier (I do not mean classic/quantum world) and when some kinda of other state in unnatural energy comparisons with the barrier and the particle? I would be glad to receive a mathematical fulfilled explanation. I hope for all kind of replies but hopefully from experienced people. I don't have any physics degree I'm just a student with passion. Thanks.
 
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E=mc2 gives you the total energy of an object with mass m at rest, both in classical physics and in quantum mechanics. In many setups this energy is not relevant at all.

Quantum mechanics applies to all systems (at least no one ever found an exception), for large objects the classical description gives a very good approximation. There is no fixed boundary.
 
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