Marvels of Scientific Invention / An Interesting Account in Non-Technical Language of the Invention of Guns, Torpedoes, Submarine Mines, Up-to-Date Smelting, Freezing, Colour Photography, and Many Other Recent Discoveries of Science

A popular-science survey presents clear, nontechnical explanations of recent engineering and scientific inventions and processes, illustrated with diagrams and practical examples. Chapters examine explosive chemistry and mining; electrical measurement and power systems; fuels, smelting and metal recovery; refrigeration, artificial cold and cold storage; marine and naval innovations including lighthouse optics, gyro-compasses, torpedoes and submarine mines; wireless transmission and methods for sending pictures; high-temperature metallurgy and industrial heating; color photography, testing and rescue techniques, medical applications, and modern artillery.