Scientific amusements . An Improvised syphon. this property by using thin paper to absorb grease fromthe surface of soups. Capillarity (already referred to) is the term used todefine capillary force, and is derived from the word capillits,a hair ; and so very small bore tubes are called capillarytubes. We know that when we plunge a glass tube into I20 WATER. water the liquid will rise up in it, and the narrower the tubethe higher the water will go ; moreover, the water insidewill be higher than at the outside. This is in accordancewith a well-known law of adhesion, which induces concaveor conv
Scientific amusements . An Improvised syphon. this property by using thin paper to absorb grease fromthe surface of soups. Capillarity (already referred to) is the term used todefine capillary force, and is derived from the word capillits,a hair ; and so very small bore tubes are called capillarytubes. We know that when we plunge a glass tube into I20 WATER. water the liquid will rise up in it, and the narrower the tubethe higher the water will go ; moreover, the water insidewill be higher than at the outside. This is in accordancewith a well-known law of adhesion, which induces concaveor convex surfaces in the liquids in the tubes, according. Molecular attraction. as the tube is wetted with the liquid or not. For instance,water, as we have said, will be higher in the tube andconcave in form ; but mercury will be depressed below theoutside level, and convex, because mercury will not adhereto glass. When the force of cohesion to the sides of thetube is more than twice as great as the adhesion of the Molecular attraction. 121 particles of the liquid, it will rise up the sides, and if theforces be reversed, the rounded appearance will accounts for the convex appearance, or meniscus,in the column of mercury in a barometer. Amongst the complicated experiments to demonstrate
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Keywords: ., bookcentury1800, bookdecade189, booksubjectscientificrecreations
