Trying to explain science without equations is like trying to explain art without illustrations. The book deals with 17 fundamental equations of physics, ranging from Newton mechanics to quantum mechanics, general and special relativity, and string theory. Many issues of modern science are considered from the angle of development and mutual influence of physics and mathematics. The material is illustrated by simple diagrams and graphs, served in an intelligible form. The book is designed to popularize the fundamental provisions of physics among readers with a certain level of training in physics and higher mathematics, and allows you to develop a holistic idea of ​ ​ the basic physical laws of the Universe. It will also be of interest to specialists in the history of science.