“I deduced that the forces which keep the planets in their orbs must [be] reciprocally as the squares of their distances from the centres about which they revolve: and thereby compared the force requisite to keep the Moon in her Orb with the force of gravity at the surface of the Earth; and found them answer pretty nearly.”

Isaac Newton, Principia, 1687

Gravity is the weakest of the four fundamental forces in the universe, yet the one that holds everything together – quite literally. It controls our seasons and the way in which earth travels around the sun, and it controls the movement of surface water on the planet, causing tides.

Our highest tides – Spring Tides – occur when the gravitational forces of the sun and moon pull in the same direction, and our lowest tides – Neap Tides – occur when the sun and the moon pull in opposing directions.

Like many long-term photographic projects, this started out as a series of regular observations from which visual inferences were drawn – a version of grounded theory.

Gradually it became clear to me that it was about seasonality – about how things change over time, but are also part of a cycle – in this case a cycle of events that has repeated its daily and monthly patterns for millions of years.

With special thanks to Hiroshi Sugimoto’s Seascapes.

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