Smith College8 年
Archimedes' Screw, Egypt, 250 BCE
Named for its inventor, the Greek mathematician Archimedes (237-212 BCE), the Archimedes screw is a device for raising water. Essentially, it is a large screw, open at both ends and encased lengthwise ...
来自MSN11 个月
A 13-year-old built a 'death ray' using a 2,000-year-old concept from Greek inventor Archimedes
Sener first became interested in the famous mathematician after seeing the Archimedes screw in a documentary ... attempted his own experiment with mirrors. In 1973, an engineer, Ioannis Sakkas ...