Lynn Poole displays a section of coaxial cable and shows on a map the 67 U.S. cities using this and microwave relays to service 109 television stations. Dr. M.E. Strieby, Director of Demonstrations for AT&T, explains the two ways to carry television programs: by coaxial cable and transcontinental radio relay. He tells how coaxial cable works and shows an amplifier, Bell Labs radio tube, and other electronic devices used in television transmission. Using a phototransistor, electromagnetic wave generator, crystal detector, and a phonograph, Dr. Strieby experiments with various materials to show how microwave signals can be disrupted, reflected, and polarized. Photographs show the lenses of a microwave system and typical metal and concrete relay towers with television transmitters and receivers.

Dr. Strieby, of American Telephone and Telegraph Co., demonstrates Bell Labs' recent invention of a solar battery, capable of producing sufficient electric voltage from any light source to operate a telephone. However, most telephone services have large power plants and storage batteries, which function when no light is available, so there is no reason to substitute a solar battery. Dr. Strieby next demonstrates a "personalized telephone" prototype ("like Dick Tracey's"), which functions like a mini-FM broadcasting station using transistors activated by a solar battery. This is only experimental and short-range because of the length of antenna required to transmit beyond a few hundred feet. Dr. Strieby then explains how a solar battery is built, using silicon from DuPont that is purified through a diagrammed process. Ultimately, with the addition of arsenic and boron gas, the thin sheets of silicon create a positive/negative juncture that allows light to become electricity.