Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 104
. 93 n is closed, the chamber in will expand, since the pressurepassing through X will accumulate. These actions takeplace each minute, the chamber m being alternately re-pleted and depleted of air. The diaphragm itself is notmuch larger than is shown in the cut. The movements ofthis diaphragm…
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