Daniell, Alfred, 1853-1937 · London : Macmillan · leaf 216
he mean force by the space traversed; the lattermust be measured along the line of force which is the bodysactual path. Lines of force are analogous to lines of steepest fall in topography; waterpoured out will at any spot run in the direction of steepest fall; and a bodyacted upon in a field of… … Tubes of Force.—Suppose AB to be a portion of an equipotentialsurface: lines of force pass through the equipotential surface: some of theselines graze the edge of the area AB;these cut off an area AB from anothergiven equipotential surface. The spacecomprised between these equipotentialareas and…
Physics
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