Middle of Earth: Atom or No Atom?

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Discussion Overview

The discussion revolves around the concept of gravity at the center of the Earth, specifically whether there is an atom present at the point where gravitational forces equal zero. Participants explore the implications of gravitational interactions, the influence of the Moon, and the nature of gravitational fields.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • One participant questions whether an atom exists at the center of the Earth or if it lies between two atoms, suggesting that the measurement of gravity may be too small at that point.
  • Another participant notes that the point of zero net gravity must consider the Moon's gravitational influence, which is not located at the Earth's center.
  • A different viewpoint suggests that net gravity is a sum of individual gravitational fields rather than centered around a specific atom or medium.
  • One participant raises the idea that the changing gravitational field due to the Earth-Moon system could create a gravito-magnetic effect, potentially affecting pressure and temperature within the Earth.
  • Another participant expresses skepticism about the Moon's gravitational influence, arguing that while it affects ocean tides, it may not have a significant impact deeper within the Earth's core.

Areas of Agreement / Disagreement

Participants express differing views on the influence of the Moon's gravity and the nature of gravitational fields at the Earth's center. There is no consensus on whether an atom exists at the center or the implications of gravitational interactions.

Contextual Notes

Participants acknowledge the complexity of gravitational interactions and the potential for varying influences based on time and location, but do not resolve these complexities.

binbots
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At the point where all gravity equals 0, (middle of the earth) is there a atom. Or does it lie between 2 atoms. Is this something that has not be measured because gravity is to small at this point. Or is just s pointless question?
 
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hi binbots! :smile:

the point at which the net gravity is zero has to take account of the Moon …

it turns out to be a long way from the centre of the Earth (I forget the exact amount, but you can easily calculate it yourself :wink:), and of course it moves around inside the Earth as the Moon moves :smile:
 
Net gravity is only a sum of all the gravity interaction together. There is no necessary center as no specific atom acts as center or medium. Treat it as if it were many indivual gravitational fields rather than one field.
 
I hadn't given the OP's question much thought before but upon just thinking about it it does raise some questions.

given the gravitational field would be changing in respect to time and location due to the balance between the two bodies and there rotational frequency. wouldn't this create a gravito-magnetic effect a bit larger than the just the Earth itself? and the moving field being asymmetric to the center line of the Earth cause a constant shift in the pressure and temperature of Earth at it's location? would this still be the case if the Earth moon was a binary system and not a satellite one?
 
My thoughts...

Gravity, pervasive as it is, is VERY weak.
That our moon's gravitational influence affects oceanic tides should not be further presumed that it affects much deeper into the core of our Earth with any substantial/noticeable influence.
Not sure though.
 

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