Well's natural philosophy : for the use of schools, academies and privte students, introducing the latest results of scientific discovery and research ; arranged with special reference to the practical application of physical science to the arts and the experiences of everyday life ; with three hundred and seventy-five engravings (1873)
Wells, David A · New York : Ivison, Blakeman, Taylor and Co. · leaf 184
om without.The Pneumatic Ink-stand, de-signed to prevent tlie ink fromthickening, by the exposure of asmall surface only to the air, isconstructed upon the principlesof atmospheric pressure. It consists of a closeglass vessel, represented in Fig. 172, from thebottom of wliich a short tube… … 180 WELLSS NATURAL PHILOSOPHY. air in great part from tho interior, and on replacing it in an upriglit position,the ink will be prevented from rising in the small tube and Ho wing over, onaccount of the atmospheric pressure upon the exposed surface of tlie ink inthe small tube, which is much…
Physics · Science · Technology
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