One man who claimed to invent this object derived inspiration for it by looking at a potato field in Idaho. That man's progress was delayed when his laboratory burned down twice. Another man (*)  who claimed to have invented this device said of it: "I never let my children near the thing". A doll's head was used in the first demonstration of this device, and Johann Hittorf used a Crookes Tube to discover a type of radiation key to the functioning of this device. A process called "degaussing" had to be used on early versions of this device. For ten points, name this device that originally used 
One man who claimed to invent this object derived inspiration for it by looking at a potato field in Idaho. That man's progress was delayed when his laboratory burned down twice. Another man (*)  who claimed to have invented this device said of it: "I never let my children near the thing". A doll's head was used in the first demonstration of this device, and Johann Hittorf used a Crookes Tube to discover a type of radiation key to the functioning of this device. A process called "degaussing" had to be used on early versions of this device. For ten points, name this device that originally used a Cathode Ray Tube to send visual signals.
One man who claimed to invent this object derived inspiration for it by looking at a potato field in Idaho.
television