We cannot imagine life without electrical appliances, we do not part with a mobile phone, we spend whole days at the computer, we use objects made of different materials. How many of us know how it works? How is the current going through the wires, what is plastic made of, what turns the wheels of cars, how is the image transmitted on TV? The book "Science and Technology" will tell you about the structure of much of what surrounds us. Step by step through the entire history of the development of scientific and technical thought of mankind, even an unprepared reader can easily figure out how the laser works, what digital technologies are and why satellites do not fall out of orbit. Numerous diagrams and pictures will help to visually present the device and principle of operation of various mechanisms.