The relations between stress and strain in a material which is not isotropic are much more complicated.
Sometimes the phrases “isotropic tension” and “hydrostatic pressure” are used instead of “uniform” tension or pressure.
Both are adapted for determining the axes of elasticity and for the differentiation of isotropic and anisotropic bodies.
For many years the luminiferous medium was identified with the isotropic solid of the theory of elasticity.
Other names for the circular lines are “circulars” or “isotropic lines.”
This is the “principle of least time” first formulated by Pierre de Fermat for the case of two isotropic substances.
With these there may be a greater or less amount of brown, isotropic glass.
I have hitherto described the geo-electric effect of radial and isotropic organs.
isotropic i·so·trop·ic (ī'sə-trŏp'ĭk, -trō'pĭk)
Identical in all directions.
Identical in all directions; invariant with respect to direction. For example, isotropic scattering of light by a substance entails that the intensity of light radiated is the same in all directions. Compare anisotropic.