Earth tide lunar and the solar tidal maxima and minima (bulges and depressions) add together for the greatest tidal range at particular latitudes. At first- and third-quarter phases of the moon, lunar and solar tides are perpendicular, and the tidal range is at a minimum. The semi-diurnal tides go through one full cycle (a high and low tide) about once every 12 hours and one full cycle of maximum height (a spring and neap tide) about once every 14 days. The development of a systematic theory of Earth tides was started by George H. Darwin in 1879, and was then furthered by
What Kind of Fool quoted describing Barry Gibb's contribution to this song: "He did the demo first. Barbra sang to the demo, then he came back and replaced a couple of things after he had heard what she was doing." Released as the third single from Streisand's 1980 album "Guilty", "What Kind of Fool" was the third consecutive top ten single from the album in the United States. "Woman in Love" reached number one on the "Billboard" Hot 100 chart, and the album's title track (also a duet between the two singers) reached number three, both in late 1980. "What Kind of Fool" spent