The direction of the magnetization is that of the magnetic axis of the element; in isotropic substances it coincides with the direction of the magnetic force at the point.
A single glance suffices to distinguish between a ruby and a "spinel-ruby," since the former is dichroic and the latter isotropic and therefore not dichroic.
Like the solutions of certain optically active organic substances, such as sugar and tartaric acid, some optically isotropic and uniaxial crystals possess the property of rotating the plane of polarization of a beam of light.
In uniaxial (tetragonal and hexagonal) crystals it is only for light transmitted in the direction of the optic axis that there is rotatory action, but in isotropic (cubic) crystals all directions are the same in this respect.
The areas bounded by the curves represent the conditions for the stable existence of the four single phases, solid crystals, liquid crystals, isotropic liquid and vapour.
For many years the luminiferous medium was identified with the isotropic solid of the theory of elasticity.
Taking the beam to be of isotropic material and the cross-section to be an ellipse of semiaxes a and b (fig.
We consider, in particular, the case of a naturally straight spring or rod of circular section, radius c, and of homogeneousisotropic material.
The most complete success has attended the efforts of mathematicians to solve the problem of free vibrations for an isotropic sphere.
The relations between stress and strain in a material which is not isotropic are much more complicated.
Taking for example the problem presented by an isotropic body of any form[4] pressed between two parallel planes distant l apart (fig.
We shall here indicate the nature of the effects produced in a thin plane plate, of isotropic material, which is slightly bent by pressure.
To determine the state of stress, or the state of strain, in an isotropic solid body strained within its limits of elasticity by given forces, we have to use (i.
We ascend, in the one case as in the other, from the simplicities of the isotropic to the complexities of the anisotropic; and the laws of these isotropic and anisotropic responses are the same in both.
The glass fragments, which have lost their sharp edges and angles, are often palagonitised at the borders, and we thus get a patch of isotropic brown glass with a yellowish margin formed of a feebly refractive turbid substance.
We have here the effects of the breaking up and crushing in situ of a dark-brown isotropic basic glass[47] carrying porphyritic plagioclase.
The groundmass is semi-isotropic with a blurred aspect, and shows traces of spherulites and numerous crystallites, with occasional felspar-lathes giving a nearly straight extinction.
Plagioclase crystals occur macroscopically in the glass; they are much eroded and contain numerous large inclusions both of the clear isotropic glass and of its palagonitised form.
It displays microporphyritic plagioclase in a ground-mass formed mainly of a smoky, almost isotropic glass, in which numbers of felspar microliths (·1 mm.
It is composed of more or less angular fragments of a basic vacuolar isotropic glass, and of plagioclase and augite with much fine palagonitic débris.
They are composed of the debris of a vacuolar and fibrillarisotropic glass, nearly colourless and in some localities altered.
It shows numerous minute amygdules occupying the original vacuoles of the basic glass; and in its substance occur irregular patches formed of a colourless semi-isotropic mineral which is either zeolitic or a form of opal.
According to this equation the different properties of various isotropic transparent bodies may arise from different values of K, of [rho], or of both.
In isotropic bodies the propagation can go on in all directions with the same velocity.
In an isotropic medium they have a common value [epsilon], which is equal to unity for the free aether, so that for this medium D = E.
In isotropic bodies at least, the vibrations are exactly transverse, i.
By applying his construction to the reflection and refraction of light, Huygens accounted for these phenomena in isotropic bodies as well as in Iceland spar.
This is the "principle of least time" first formulated by Pierre de Fermat for the case of two isotropic substances.
In an isotropic medium, whether homogeneous or otherwise, they are normal to the wave-fronts, and their velocity is equal to that of the waves.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "isotropic" in a variety of sentences. We hope that you will now be able to make sentences using this word.
