The Circle and Sphere - Why so prevelant in the Universe?

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    Circle Sphere Universe
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Discussion Overview

The discussion revolves around the prevalence of spherical and circular shapes in the universe, including stars, planets, galaxies, and atoms. Participants explore the reasons behind these shapes from various perspectives, including gravitational forces, energy efficiency, and biological implications.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification
  • Technical explanation

Main Points Raised

  • Some participants note that stars, planets, and galaxies appear spherical or circular due to gravitational forces, which tend to shape large bodies into these forms.
  • Others argue that orbits are elliptical and that atoms are not truly spherical, but rather modeled as such for simplicity.
  • One participant suggests that the spherical shape minimizes surface area for a given volume, making it energetically favorable in many contexts.
  • Another viewpoint emphasizes that biological systems may not benefit from spherical shapes, as they often require maximized surface area for nutrient absorption.
  • Some participants question the implications of gravity and whether it inherently leads to spherical shapes, pondering the deeper reasons behind this phenomenon.
  • There are discussions about the role of pi in physics and its connection to spherical shapes in equations, suggesting a link between geometry and physical laws.
  • One participant raises a hypothetical scenario about the shape of atoms in space, questioning whether external forces would alter their shape.

Areas of Agreement / Disagreement

Participants express a mix of agreement and disagreement. While there is some consensus on the influence of gravity on the shapes of celestial bodies, there are competing views regarding the nature of atomic shapes and the implications for biological systems. The discussion remains unresolved on several points, particularly regarding the deeper reasons for the prevalence of spherical shapes.

Contextual Notes

Limitations include the dependence on definitions of shapes and the assumptions made about gravitational effects. The discussion also highlights the complexity of applying macro concepts to the quantum realm, which remains unresolved.

  • #31
DaveC426913 said:
I Learned something recently from my Optician. The vitreous humour serves no anatomical purpose once the eye is formed. It could be drained completely and replaced with saline with no untoward effects.

Yes, but its vital in creating part of the turgor pressure needed to inflate the eyeball, so saying that replacing it with saline solution means that the saline would then provide the turgor pressure. That is certainly an anatomical purpose, unless you want your lens resting on your retina and you enjoy blindness.


@Mapes

Certainly the ball and socket physicality is important and efficient when one's shifts one's gaze upwards or sideways. But the primary reason the eye is spherical has to do with how light is refracted in the lens. We know the lens is not spherical but rather a flattened sphere not dissimilar to the geometry of a magnifying glass. Clearly there must must be space between the lens and retina for the refracted light to converge onto a point on the retina, so a spherical eyeball makes sense.
 

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