Decades of controlled experiments in material failure have shown that even when a perfectly symmetrical crack is created under tensile forces, it spontaneously loses symmetry as it propagates ...

In studying their data, the research pair found that the most important factors determining leaf drifting were symmetry and lobedness. The more symmetrical a leaf, the faster its descent ...

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Gyrovectors are equivalence classes of directed gyrosegments that add according to the gyroparallelogram law just as vectors are equivalence classes of directed segments that add according to the ...