Tidal range Tidal range Tidal range is the height difference between high tide and low tide. Tides are the rise and fall of sea levels caused by gravitational forces exerted by the Moon and Sun and the rotation of Earth. Tidal range is not constant but changes depending on the locations of the Moon and Sun. The most extreme tidal range occurs during spring tides, when the gravitational forces of both the Moon and Sun are aligned (syzygy), reinforcing each other in the same direction (new moon) or in opposite directions (full moon). During neap tides, when the Moon and Sun's gravitational
Sun and Moon (Middle-earth) light of the Sun before it was tainted by Melkor when he ravished Arien. The name of Narsil, the sword of King Elendil (later reforged for Aragorn as Andúril), contains the elements "nar" and "thil," "fire" and "white light" respectively in Quenya, referring to the Sun and Moon. The Man in the Moon is even described in those writings, as being an old Elf who secretly hid on the island of the Moon, and built a minaret there. This is alluded to further in Tolkien's "Roverandom", in which the Man in the Moon also lives in a minaret. Combined with