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 and the Seagle or dog, this very personal book of hard-won knowledge could well be tried and found true." Archimedes and the Seagle Archimedes and the Seagle (1984) is a novel by Australian writer David Ireland. It won the ALS Gold Medal in 1985. The Archimedes of the title is a dog, an old red setter who has learnt to read and who philosophises about the world. In particular, he is fascinated by seagulls, and one in particular, who appears to soar like an eagle, hence the "seagle". Veronica Sen in "The Canberra Times" noted: "An extraordinary thing about this novel is that