A system of natural philosophy, designed for the use of schools and academies (1845)
Moffat, J[ohn] M. [from old catalog] · Philadelphia, E. C. Biddle · leaf 136
HYDROSTATIC PRESSURE. 133 29. There is another striking- mode of illustrating the effect ofliquid pressure, by means of akind of machine called the Hydro-static Bellows, a figure of which may be seen in the margin. It is composed of two flat boards united at the sidesby flexible leather, and having…
Physics
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