Philosophical instructor, or, Webster's elements of natural philosophy : subdivided into principles and illustrations ; intended for academies, medical schools, and the popular class-room (1824)
Eaton, Amos, 1776-1842, Webster, John, fl. 1804-1824 · Albany : Printed by Websters and Skinners ... · leaf 58
s opens thelower valve of the machine, and the air escapes intothe cylinders : therefore, when the air in the recipienthas not sufficient elasticity to force open the valves,the action of the handle cannot produce any furtherrarefaction. The construction of the air-pump is as follows :—A and b are… … 56 Air-pump. pl;ite has a small hole in the middle, through whichthe air passes from the recipient into a closed channelmade of I1 ass, which communicates with the cylin-ders \ b : near the bottom of each cylinder is a valveor lid opening upwards, and above these valves aretwo others, which are…
Physics
Internet Archive · Medical Heritage Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from One thousand processes in manufactures and experiments in chemistry / [Colin Mackenzie]. (1825)](https://img.insideoutlibrary.com/img/200/wellcome-wellcome_b29307867-150-1.webp)
