Blood Pressure, Dr. D. Penney

Figure 04. Showing Hooke's Law of elasticity, that the elastic force per unit area is proportional to the stretch above the unstretched length, Lo, that is, to ( L - Lo ).
Eventually the line curves as the yield point and breaking stress are reached. Homogeneous and non-homogeneous materials deform differently.
The length-tension diagram shows passive, not active tension.


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