Screw turbine connected to a generator through a gearbox. The Archimedean screw is an ancient invention, attributed to Archimedes of Syracuse (287–212 BC.), and commonly used to raise water from a watercourse for irrigation purposes. In 1819 the French engineer Claude Louis Marie Henri Navier (1785–1836) suggested using the Archimedean screw as a type of water wheel. In 1916 William Moerscher applied for a U.S. patent on the hydrodynamic screw turbine. The Archimedean screw turbine is applied on rivers with a relatively low head (from 1 m to 10 m) and on low flows (0.01 m³/s up to around 10 m³/s on
Archimedes-lab.org and the development of creativity. Here's a quote from Scientific American (May 27, 2003): "This virtual lab borrows the empirical spirit and creative curiosity that Archimedes brought to his work and invites visitors to explore with the same expectations for mind-blowing discovery." Archimedes-lab.org has won several awards from scientific and educational publications, including a Scientific American Web Award in 2003, the National Council of Teachers of Mathematics Web Award, and a mention in MERLOT, the Multimedia Educational Resource for Learning and Online Teaching and in The DO-IT Center, the Disabilities, Opportunities, Internetworking, and Technology Center. Archimedes-lab.org Archimedes-lab.org is a free