It is difficult to learn from school textbooks how a radio works. Electricity is studied in one class, electronics in another, radio waves in the very last one. And there is no way to combine all this knowledge in one student. Two people set out to eliminate this terrible breakthrough in education: the writer E. Uspensky and Professor Chaynikov, an electronics engineer. The professor gave a series of lectures about radio on central television, and E. Uspensky presented them in this story. It turned out to be a fascinating story-lecture. After reading it and two dozen more technical books, you can easily assemble televisions, computers and even consoles for computer games. For grown-up children and adults.