Marine current power the rotation of the earth. The sun acts as the primary driving force, causing winds and temperature differences. Because there are only small fluctuations in current speed and stream location with minimal changes in direction, ocean currents may be suitable locations for deploying energy extraction devices such as turbines. Other effects such as regional differences in temperature and salinity and the Coriolis effect due to the rotation of the earth are also major influences. The kinetic energy of marine currents can be converted in much the same way that a wind turbine extracts energy from the wind, using various types
Tower of the Winds it was buried up to half its height, and traces of this can be observed in the interior, where Turkish inscriptions may be found on the walls. It was fully excavated in the 19th century by the Archaeological Society of Athens. Several buildings are based on the design of the Towers of the Winds, including: Pamela A. Webb, "The Tower of the Winds in Athens. Greeks, Romans, Christians, and Muslims: Two Millennia of Continual Use," (Philadelphia 2017) Tower of the Winds The Tower of the Winds or the Horologion of Andronikos Kyrrhestes is an octagonal Pentelic marble clocktower in the