The name of Professor of the University of London S. Tolansky is already known to our reader from the book Optical Illusions published by the Mir publishing house in 1967. In the new book, the author introduces us to the wonders of the world of light, well known to every attentive person, at the same time striking in their beauty or unusualness. The author describes observations and the simplest experiments on multiple reflection, interference, surface microstructure and Doppler effect, how the main properties of light rays and waves are manifested...