Archelaus (philosopher) Archelaus (philosopher) Archelaus (; ; fl. 5th century BCE) was an Ancient Greek philosopher, a pupil of Anaxagoras, and may have been a teacher of Socrates. He asserted that the principle of motion was the separation of hot from cold, from which he endeavoured to explain the formation of the Earth and the creation of animals and humans. Archelaus was a philosopher of the Ionian School, called "Physicus" from having been the first to teach natural philosophy at Athens. This statement of Diogenes Laërtius, is contradicted by Clement of Alexandria, but the two may be reconciled by supposing that Archelaus
Tub boat more easily than larger boats and tub boat lifts and inclined planes were developed as an alternative to canal locks, particularly in or near a colliery or similar industrial works. At a lift the train could easily be divided, the boats lifted individually, and the train reassembled afterwards. Sometimes the boats used snug-fitting non-waterproof inner containers which could be more easily lifted out. Because of their small size, the canals that were built for tub boats could also be smaller, saving considerable construction cost. The first use of tub boats in England was on the Bridgewater Canal. Other notable uses