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 99
be produced by a solid screw acting; within a hollow screw in afixed beam; and the latter exhibits the similar effect of a hollowscrew pierced in a block turning by means of a lever on a fixedscrew; the pierced block thus adapted to a solid screw is calleda nut. 205. As the effect of the screw is…
Physics
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