An introduction to projective geometry and its applications; an analytic and synthetic treatment (1905)
Emch, Arnold, b. 1871 · New York, J. Wiley & sons; London, Chapman & Hall, limited · leaf 254
onally represent themaximal tension curves. The case of an elliptic involutionwhere there are only tensions is illustrated by the cracks whichform on a heavily varnished surface or in a mud-bed which isdrying up. In this case only tensile normal stresses act on therectangular pair. One is a… … Fig. 103. cracks intersect or meet orthogonally. This can be explainedin the following manner: After a crack has formed, the maximalstress and strain normal to the crack has been relieved, so thatthe former minimal normal tension along the crack now becomesthe maximum. Hence the next rupture will…
Geometry, Projective · Geometry, Analytic
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