Concept

Tide

Overview

rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun and the rotation of the Earth

Overview adapted from Wikipedia (CC BY-SA 4.0; see the article history for authors).

Found by search and not yet checked by a person; they may only mention the idea in passing.

Pytheas the Massilian, that the fulness of the moon gives the flow, the wane the ebb. Plato attributes it all to a certain balance of the sea, which by means of a mouth or orifice causes the tide; and by this means the seas do rise and flow alternately. Timaeus believes that those rivers which fall from the mountains of the Celtic Gaul into the Atlantic produce a tide.
Plutarch, Complete Works of Plutarch — Volume 3
The chapter “CHAPTER XVII. OF TIDES, OR OF THE EBBING AND FLOWING OF THE…” is titled for Tide; names Tide twice.
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It is thus, for example, with the theory of the tides. No one doubts that Tidology (as Dr. Whewell proposes to call it) is really a science.
John Stuart Mill, A System of Logic, Ratiocinative and Inductive
Names Tide several times; opens on Tide.
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On the sea-shore may be noted sundry instances of compound rhythm. We have that of the tides, in which the daily rise and fall undergoes a fortnightly increase and decrease, due to the alternate coincidence and antagonism of the solar and lunar attractions.
Herbert Spencer, First Principles
States what Tide is; names Tide.
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