Earth tide Earth tide Earth tide (also known as solid Earth tide, crustal tide, body tide, bodily tide or land tide) is the displacement of the solid earth's surface caused by the gravity of the Moon and Sun. Its main component has meter-level amplitude at periods of about 12 hours and longer. The largest body tide constituents are semi-diurnal, but there are also significant diurnal, semi-annual, and fortnightly contributions. Though the gravitational forcing causing earth tides and ocean tides is the same, the responses are quite different. The larger of the periodic gravitational forces is from the Moon but that of the
What Kind of Fool What Kind of Fool "What Kind of Fool" is the title of a vocal duet from 1981 (see 1981 in music) by singers Barbra Streisand and Barry Gibb. The song was written by Gibb and Albhy Galuten. The songs on the "Guilty" album were a collaboration between Streisand and all the members of the Bee Gees, including Barry's brothers, Robin and Maurice Gibb. But Barry Gibb played the largest role of the brothers on the album, co-writing and co-producing all of the tracks, appearing on the album cover embracing Streisand, and singing two duets with her. Co-producer Karl Richardson was