Archimedes
PRINCIPLE OF, a well known principle in hydrostatics, the discovery of which is attributed to the celebrated philosopher whose name it bears. This important theorem may be thus defined: When a solid is immersed in a fluid, it loses a portion of its weight, and this portion is equal to the weight of the fluid which it displaces, that is, to the weight of its own bulk of the fluid. This ingenious method is one way of ascertaining the specific gravity of solids, but it is not the most exact.
ARCHITECTURE Observing the difficulty of raising water from the Nile to places above the reach of the flood tides, he is said to have de- signed this screw as a means of over- coming the obstacle. It consists of a pipe twisted in a spiral form around a from the Nile to places above the reach Archimedes, the celebrated Syracusan philosopher, while studying in Egypt.
Observing the difficulty of raising water water, and when the cylinder is made to signed this screw as a means of overcoming the obstacle. It consists of a pipe until it flows out at the top. The cylinder, which, when at work, is suprevolve on its own axis, the water is revolve on its own axis, the water is lower end of the pipe is immersed in water, and when the cylinder is made to raised from bend to bend in the spiral size and moved by the wind. pipe until it flows out at the top. The low grounds; there it is mostly of large size and moved by the wind. such tracts of sea as are interspersed ARCHIPELAGO, a term applied to land for raising water, and draining low grounds; there it is mostly of large