Density of Water: Is It the Same Everywhere?

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Discussion Overview

The discussion centers on whether the density of water is uniform throughout a large disk of water, with specific scenarios considered: one on Earth under gravity and another in space. The inquiry seeks to understand the conditions under which density might vary, particularly in the presence of gas.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant questions if the density of water remains the same everywhere in a disk, except where gas is present, under two different scenarios: on Earth and in space.
  • Another participant suggests that gravitational effects and the compressibility of water make it unlikely for density to be uniform, although the interpretation of "exactly" is noted as a variable.
  • A further contribution specifies that "exactly" refers to a precision of 1e-3000, indicating a very high standard for uniformity.
  • A subsequent reply asserts that under the conditions described, the answer is "no," implying that density would not be the same everywhere.

Areas of Agreement / Disagreement

Participants do not reach a consensus; there are competing views regarding the uniformity of water density in the scenarios presented, with some arguing against uniformity and others suggesting it may depend on specific conditions.

Contextual Notes

The discussion does not resolve the implications of gravitational effects or the role of water's compressibility on density variations. The precision of density measurement is also a point of contention.

Gh778
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I would like to know if density is exactly the same everywhere in a disk full of water except at one part where there is gas. All are fixed: disk of water, and container of gas. I don't want the value of density just to know if density is exactly the same everywhere in disk of water. 2 cases:

a/ disk is put on Earth, gravity is perpendiculary to the screen, diameter of disk is 10 km (theoretical study and I suppose gravity from Earth perfect)

b/ disk is in space, it's size is 10000 km of diameter (all is fixed by external theoretical system)
 

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Gravitation & compressibility make it quite unlikely, although it depends how exact is your "exactly", as water compressibility is quite low.
 
exactly is exactly the same value, precision at 1e-3000 if necessary
 
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Then the answer is "no".
 
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