No writings were found originating from philosopher and mathematician Pythagoras (about 569-475 BC), who found the theorem named after him. From early biographies we can learn that he believed that all relations could be reduced to number relations, like in music, mathematics or astronomy. He is described as a god-like figure. The only true description of his physical appearance seems to be a striking birthmark on his thigh.
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The advantage of having a phase shift is of course that the number of displacement volumes is effectively doubled and, consequently, the pulsations are out of phase. This leads to a very smooth flow output. This again has benefits in terms of reduction of wear of the hydraulic system and the decrease of leakage, for example in fittings and hose connections. |
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