Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 169
Cleanness of Surfaces. — The high value of the surface tension of mercury rendersit exceedingly difficult to preserve a clean surface of thisliquid, and the same thing is true for water, for which thesurface tension, although smaller than for mercury, stillconsiderably exceeds that of any other… … Fig. 127. horizontal components of the ten-sions in the oil-air and the oil- EXAMPLES. 159 In using benzine to remove grease spots the considera-tions already presented show that the application of thebenzine to the center of the spot would naturally result indriving the grease into the clean parts…
Physics
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