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
Wall of the Sun and Wall of the Moon "Moon". The two mosaic murals were assembled "in situ" by a team of technicians under the direct supervision of Miró and Llorens Artigas. The works were inaugurated in 1958, as same as the building, and received rave reviews. Even one of the murals, the "Wall of the Sun" won the Biennial Prize of Guggenheim Foundation. Miró later return to work for UNESCO, designing the UNESCO Medal for Pablo Picasso. Initially, the walls were outdoors, but later moved inside the building to protect them from damage caused by acid rain. Wall of the Sun and Wall of the Moon The Wall