Talk:Theoretical gravity

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Where does this article fit in?[edit]

The content of this article is a subset of Gravity of Earth#Mathematical models and there is also a lot of overlap in subject matter between this article and gravity anomaly, free-air anomaly and Bouguer anomaly. Also, the title is vague. It could refer to any of the types of gravity anomaly or even General relativity. So my questions are – what purpose is this article serving, and what should it be called?

My suggestion: rename this article to something like Reference gravity formula or International gravity formula, consistent with the focus on world gravity models. Put most of the material in Gravity of Earth#Mathematical models here, leaving a more accessible summary in that section. To make this article readable, there needs to be more detail on how the terms in the formulae are derived. RockMagnetist (talk) 05:53, 30 October 2011 (UTC)[reply]

Sounds good - could rename to IGF. Also useful to explain formula based on shape and centripetal force due to rotation and indicate relative size of the 2 effects ? [1] shows effect of rotation. - Rod57 (talk) 10:20, 8 September 2014 (UTC)[reply]

Meaning of the sin2 coefficient[edit]

This sentence does not seems completely correct since ~65% of the effect is due to Earth rotation. As a physically defined form parameter it corresponds to the geometrical flattening f of the earth ellipsoid. — Preceding unsigned comment added by 2.230.128.127 (talk) 11:17, 4 April 2014 (UTC)[reply]