About the book: 1965 / For young readers - an adventure story telling about the discoverers of thermoelectricity - an interesting physical phenomenon that so fascinated the heroes of V. Okhotnikov's book "The Heirs laboratory assistant Sinyavin.” After reading the book, you will learn about how the secret of an ancient portrait of laboratory assistant Sinyavin was discovered, how four pioneers built a semiconductor car, and what interesting and exciting events accompanied the search for young inventors. For middle age. Illustrations by Heinrich Valck.