P. Bridgman's research in the field of high pressures can already be ranked among the classical works of experimental physics. And if Bridgman himself notes two outstanding periods in the history of the development of high-pressure physics, namely: the Canton-Perkins period and the Calete-Amaga period, then undoubtedly the last thirty years of our century, counting from 1906, can be called the Bridgman period...