Theoretical physics. Field theory. Eichenwald A.A.

The book of an outstanding domestic physicist of A.A. Eichenwald (1863–1944) proposed to the reader is devoted to such a section of theoretical physics as the theory of field. The book includes three chapters. The first chapter contains the most important rules of vector calculus; The assimilation of the information presented in it is necessary primarily for understanding vector designations adopted in all guidelines in physics. The chapter describes the addition and subtraction of vectors, the work of vectors, as well as derivatives and integrals in physics. The second chapter contains the basis of the foundations of the theory of fields; The scalar field, a potential vector field, a vortex, flat and alternating field are considered. The third chapter gives brief information about the tensors; In its last department, the general analytical theory of tensors of multidimensional space is represented, which has developed under the influence of Einstein's theory of relativity.

This book in previous publications was the first part of A.A. Eichenwald's classical work “Theoretical Physics”, however, it can be considered as a completely independent work. The presentation is built in such a way that it does not require the reader of extensive information in mathematics; To understand the material, knowledge of the foundations of differential and integral calculus is enough. The book will be useful not only to physicists, but also to engineers-electrical engineers and hydraulic equipment; It can serve as an excellent manual for students of physico and mathematical faculties of universities in the study of the course of theoretical physics.