Comparing Large & Small Bodies Using Gravity & Surface Tension

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Discussion Overview

The discussion revolves around the differentiation between large and small bodies in the context of gravity and surface tension. Participants explore how to define these scales and the implications for physical equations and theories.

Discussion Character

  • Exploratory, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant seeks clarification on how to define large and small bodies, particularly in relation to gravity and surface tension.
  • Another participant suggests the Bond number as a potential metric, though they express confusion about the original question.
  • A different participant emphasizes the need to understand the definitions of large and small bodies before applying surface tension to differentiate them.
  • One participant argues against a simplistic threshold for distinguishing scales, noting that physical equations depend on specific parameters like volume, radius, or mass, and that different physical theories apply at different scales.
  • Another participant reflects on the subjective nature of defining large and small, suggesting that it may depend on personal reference points.

Areas of Agreement / Disagreement

Participants do not reach a consensus on how to define large and small bodies, with multiple competing views and uncertainties remaining in the discussion.

Contextual Notes

There are limitations in the discussion regarding the assumptions made about scale definitions and the applicability of different physical theories, which remain unresolved.

nard
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Can somebody tell me how to differentiate a large scale to a small scale? I want to know what he/she is based on. What if you had to compare the scale of large and small bodies using gravity and surface tension, what would be your first move?
 
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The Bond number? I don't really understand your question.
 
I didn't refer to the bond number in my post. Suppose u have the surface tension of water maybe at normal temperature, and u are to use it to find a scale that separates large to small bodies, for you to do that u first have to know what a large scale and a small scale body is and then proceed.
 
I don't think physics is as simple as "smaller than 5 meters you use these equations, and bigger then 5 meters, you use these other equations". The equations typically require you to know the actual volume or radius or mass of the object. With that said, near atomic scales, quantum theory is used, and near the speed of light, Einstein's relativity is used, otherwise classical physics usually does just fine.
 
When i saw this question i realized that if someone asked me what a large and small body is, i wouldn't have a specific answer. I just think that large and small depend on a reference you have given yourself.
 

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