Many people associate physics with an obscure school subject that has no relation to life. But after reading this book, you will understand how knowledge of physical laws helps to find answers to a wide variety of questions, for example: what is more dangerous to health - smoking, city noise or electromagnetic pollution? Why are long trips on planes and trains tiring? How are music and genius related? Why can working at a computer damage your eyesight and how to avoid it? What is the danger for astronauts during interplanetary travel? How can you see sound? Why are small doses of radiation beneficial and large doses harmful? How are a mobile phone and bad memory related? Why is properly selected lighting the key to good work and restful sleep? When and why did radioactive rain appear?