How Can We Accurately Predict the Moon's Position Despite Quantum Uncertainty?

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SUMMARY

The discussion centers on the apparent contradiction between quantum uncertainty and the precise predictions of celestial mechanics, specifically regarding the Moon's position. Participants highlight that while the Heisenberg Uncertainty Principle (HUP) applies to sub-atomic particles, classical mechanics remains effective for macroscopic objects like the Moon. This raises questions about the compatibility of quantum mechanics and classical physics, suggesting that a unified theory is necessary to reconcile these differences. The conversation underscores the ongoing challenge in physics to develop a comprehensive framework that accurately describes both the microscopic and macroscopic realms.

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  • Understanding of the Heisenberg Uncertainty Principle (HUP)
  • Familiarity with classical mechanics principles
  • Basic knowledge of quantum mechanics
  • Concept of macroscopic versus microscopic physics
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  • Explore classical mechanics and its applications to celestial bodies
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Holocene
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If we cannot know with absolute certainty the speed or position of a sub-atomic particle, how is it that we can calculate with great certainty the speed and position of say the moon, which is of course ultimately comprised of these same sub-atomic particles?

Is classical mechanics still considered "correct" when dealing with the macroscopic, but must be abandoned at the atomic level?

If so, is there not some sort of paradox?
 
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You describe one of the main problems in current science, creating a formula to describe both the the microscopic world and macro world. HUP only applies to things like electrons which are micro. Clearly, there is no uncertainty in predicting the moon's orbit to a high degree, but still not a perfect degree of course.
 

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