Original title: Zur Abschatzung der Anizotropie. Polish title: O szacowaniu anizotropii. English Title: On assessment of anisotropy degree

In continuous medium physics, crystal physics and related fields, the properties of the studied objects are described by means of Euclidean tensors of various orders. The symmetry and asymmetry of the described physical properties are manifested by changing these tensors as a result of subjecting them to rotation in the original physical space. If the tensor does not change with any rotation, it is called isotropic (odd-order hemitropic). Otherwise, the tensor is anisotropic. For some practical problems, it is useful to have some overall index of anisotropy by which tensors can be compared. Here, a novelty measure of anisotropy degree of any order Euclidean tensor is proposed, basing on the concept of tensor orbit.

Metamorphism & Electricity: Metamorphic Contributions to Electrical Phenomena in the Earth's Crust

Metamorphism generates electrical and magnetic phenomena, and is influenced by these forces. Information fundamental to their combined study is presented, including examples from microtectonics, crystal physics, geophysics, seismology, mineralogy and materials science. Applications for earthquake prediction, planetary science research, alternative energy and science education are included. Work on reported seismic electric signals is analyzed and summarized. Ten hypotheses related to earthquake mechanisms and prediction are presented, as well as eighteen recommendations for further study. Eight microtectonic deformation mechanisms are explored. Two hundred seventeen descriptions of minerals exhibiting ferroelectricity, pyroelectricity or piezoelectricity are presented, with quantitative data where known. Fifty-three of these are centrosymmetric, and explanations are given for their apparent violations of crystal theory. A comprehensive list of thirty-two mechanisms that generate telluric currents is also presented, as are some novel or inexpensive experimental techniques in crystal physics. [This is a self-published version, repaginated with improved text design and layout.]