Full encyclopedia "Science and Technique." Schoolboy Yu. K.

We do not think of life without electrical appliances, we do not part with a mobile phone, spend all days at the computer, use objects made from different materials. And how many of us know how all this works? How does the current come along the wires, from which they make plastic, what is spinning the wheels of cars, how is the image transmitted on TV? The book "Science and Technique" will tell you about the device a lot of what surrounds us. Step by step, having passed the whole history of the development of the scientific and technical thought of mankind, even an unprepared reader will easily figure out how the laser works, what digital technologies are and why satellites from the orbit do not fall. Numerous schemes and pictures will help to clearly imagine the device and principle of operation of various mechanisms. This book is useful to schoolchildren in the development of physics, chemistry, mathematics, computer science, biology.