There are amazing properties of mathematics to model and calculate physical properties of matter. Mathematics describes physical experiments, generalizes and predicts physical properties. And mathematical models are created in the Euclidean axiomatics of points ("...having no parts"), lines ("...length without width"), a system of numbers equal by analogy to units. A set of Euclidean points at one point, is it a point or a set of them? A set of Euclidean lines at one "length without width", is it a line or a set of them? Euclidean axiomatics does not give answers to such questions. But it is this axiomatics that is our technology of theories in space-time. There is another technology of theories of dynamic space-matter, in which the technology of theories in Euclidean axiomatics is a limiting, special case. To test the reality of such a technology of theories, in essence, research is conducted by examining trial experiments that follow from such a technology of theories of dynamic space-matter.