| http://www.w3.org/ns/prov#value | - When the changes of gravitative force take place slowly, and are also small in amount, the tides in liquids or strains in solids are very small, as in the case of our earth when acted on by the sun and moon, the result is a small tide in the ocean and atmosphere, and no doubt also in the molten interior, to which the [[p. 121]] comparatively thin crust may partially adjust itself.
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