<P> The Ancient Egyptians had knowledge to some extent of sail construction . This is governed by the science of aerodynamics . The earliest Egyptian sails were simply placed to catch the wind and push a vessel . Later Egyptian sails dating to 2400 BCE were built with the recognition that ships could sail against the wind using the lift of the sails . Queen Hatshepsut oversaw the preparations and funding of an expedition of five ships , each measuring seventy feet long , and with several sails . Various others exist , also . </P>
<P> The Ancient Egyptians had knowledge to some extent of sail construction . This is governed by the science of aerodynamics . The earliest Egyptian sails were simply placed to catch the wind and push a vessel . Later Egyptian sails dating to 2400 BCE were built with the recognition that ships could sail against the wind using the lift of the sails . Queen Hatshepsut oversaw the preparations and funding of an expedition of five ships , each measuring seventy feet long , and with several sails . Various others exist , also . </P>
contribution of egypt in the field of science
contribution of egypt in the field of science
aerodynamics
aerodynamics