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 three weeks at number ten on the Hot 100 in March and April 1981. It also spent four weeks atop the "Billboard" adult contemporary chart. Popular American TV serial "Glee" covered this song in 2011 by fictional character Blaine Anderson (as played by Darren Criss). This was featured on their soundtrack album "". No Glee episode had featured this version, as it is only appeared in the album. 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