Young men who were looking for new worlds to conquer at the end of the
19th century were already reading by (1) electric lights and speaking on the
telephone over long (2) distances. Along came radio, a phenomen on that was the
result of many brilliant (3) scientists. Many people were pondering the problem of
sound waves. R. A. Fessenden was among them. Thomas Edison hired Fessenden
as a (4) tester into giving him (5) repairing of electric mains and an 6) agressive man. Fessenden was
(7) resourceful. He very soon became obsessed with the idea of working with sound waves. He left Edison and took two (8) bankers' money for his experiments.