The most important science is physics! It is she who is able to answer all your questions about the structure of the outside world and the phenomena that are inherent in it. Many people are afraid of physics like fire, they consider it difficult, but in many respects understanding depends on the method of presentation, so let's try to look at things and phenomena that seem complex and incomprehensible from different angles, gradually approaching the understanding of our world and laws. We will start with basic concepts, but after studying the basics, we will move higher and touch on topics that are not talked about at school, but which do not become less interesting and significant from this.