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New born polar bear cub with its mum in their enclosure at Schonbrunn Zoo in Vienna, Austria Stock Photo - Alamy
![Theory of structures and strength of materials. and elasticity may be considerably reduced by hightemperatures or severe cold. When a bar of such material is tested, the stress-straincurve (/= ± EK)^ Theory of structures and strength of materials. and elasticity may be considerably reduced by hightemperatures or severe cold. When a bar of such material is tested, the stress-straincurve (/= ± EK)^](https://c8.alamy.com/comp/2AGAGTB/theory-of-structures-and-strength-of-materials-and-elasticity-may-be-considerably-reduced-by-hightemperatures-or-severe-cold-when-a-bar-of-such-material-is-tested-the-stress-straincurve-=-ek-as-has-already-been-pointed-out-is-almostabsolutely-straight-within-the-elastic-limit-eg-from-o-o-a-in-tension-and-from-o-to-b-in-com-pression-as-the-load-increasesbeyond-the-elastic-limit-the-in-creasing-deformation-becomesplastic-and-permanent-and-thestress-strain-diagram-takes-an-ap-preciable-curvature-between-thelimits-j-and-b-and-the-points-dand-e-corresponding-to-the-maxi-mum-lo-2AGAGTB.jpg)
Theory of structures and strength of materials. and elasticity may be considerably reduced by hightemperatures or severe cold. When a bar of such material is tested, the stress-straincurve (/= ± EK)^
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