Sub-titled ""What you can do in electronics"" -- and succeeding in conveying even to the untutored, a sense of the magnitude of the possibilities in that very new field where the vacuum tube is a device which is transforming engineering. In it lies the solution of many power problems. Photo-electric cells are already doing miracles in control of machines. The author discusses many facets of the business future of electronics, as related to industry, manufacturing, music, sound, engineering, public utilities, moving pictures, machine shops, chemistry. His final chapters give factual details as to home courses, schools,radio schools and colleges.