By September of 1927, Farnsworth has successfully used his image dissector to transmit the world’s first electronic television signal — a single thin line scratched into a smoked glass slide.

For those curious about other early television innovations, the Westinghouse H840CK15 was the first consumer all-electronic color television sold and released in the U.S. in March 1954 ...

Before totally electronic TV cameras and receivers were built, the electromechanical "scanning disc" produced the first video images. As far back as 1884, German inventor Paul Nipkow designed such ...