Physics. Schrödinger grew up, but questions remained

Alla Borisovna Kazantseva is a candidate of physical and mathematical sciences, associate professor of the Department of General and Experimental Physics at MPGU, finalist of the RAS competition in 2019 and 2021 for the best work in popularizing science. Physics... is one of those sciences that has allowed us to make the world around us what it is: cars and trains, rockets and space stations, television, the internet, electron microscopes, mobile communications, and other benefits of technological civilization. Physics has allowed us to get answers to a variety of questions. What is noise pollution, why do some sounds harm our bodies while others heal? Who will age faster: a person on Earth or an astronaut traveling to another planet? Where does ubiquitous radiation come from and how does it affect us? What colors need to be mixed to obtain white? What ingredients are needed to create the Universe: ordinary and dark matter, dark energy - what else? Physics not only invents the most interesting puzzles but also provides precise, well-founded answers to them. Don't believe it? Then try to calculate which is greater: the stars in the entire visible Universe, the grains of sand on all the beaches of Earth, or the molecules in a glass of water? You will find the answers to these and many other questions on the pages of this book.