Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 373
obtained in practice would differ from these only by reason of interferingcauses, which can be taken into account when required. We have sup-posed hitherto that the pressures of the pistons exactly balance each other.Now, so long as the system thus remains in equilibrium no work is done;but if the… … 326 HYDRA VLIC PO WER. effects due to difference in the levels of the columns of liquid when thepistons are moved ; and further, in order to fix our ideas, let us imaginethe smaller tube to have a section of i square inch in area, and the largerone of 25 square inches. Now, if the weight of the…
Inventions
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