. The Ontario high school physics. Fio. 182. — Contrasting the be- Fig. 183.—Water rises between the two haviour of water (left) and mer- plates of glass which touch along one cury (right). edge. liquid is depressed. The behaviour of mercury can con-veniently be shown in a U-tube as in Fig. 182. Another convenient method of showing capillary action isillustrated in Fig. 183. Take two square pieces of windowglass, and place them face to face with an ordinary match orother small object to keep them a small distance apart alongone edge while they meet together along the opposite may be
. The Ontario high school physics. Fio. 182. — Contrasting the be- Fig. 183.—Water rises between the two haviour of water (left) and mer- plates of glass which touch along one cury (right). edge. liquid is depressed. The behaviour of mercury can con-veniently be shown in a U-tube as in Fig. 182. Another convenient method of showing capillary action isillustrated in Fig. 183. Take two square pieces of windowglass, and place them face to face with an ordinary match orother small object to keep them a small distance apart alongone edge while they meet together along the opposite may be held in this position by an band. Tlienstand the plates in a dish of coloured water. The water atonce creeps up between the plates, standing highest wdiere theplates meet. * Latin, Capillus, a hair. 154 PHENOMENA OF SURFACE TENSION AND CAPILLARITY When a glass rod is withdrawn from water some waterclings to it, and the liquid is said to wet the glass. Ifdipped in mercury, no mercury adheres to the glass. Mercurydoes n
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishe, booksubjectphysics
