This book is destined for scientific workers and professors in the field of quantum mechanics and quantum theory of collisions, students and post-graduate students and all interested in quantum mechanics, quantum field theory and nuclear physics. The book contains the chapter of fundamental quantum mechanics and quantum field theory - on time as a quantum observable for systems with continuous and discrete spectra. In its completed form this book could not be written up to now due to a number of the mathematical problems. Some mathematicians had been known the solution of these problems in...