In 1925 he sent the first television image of a ventriloquists dummy across a room. This clip is from the series The Genius of Invention. This clip will be relevant for teaching Physics and History.

It would be in the 1920s before [John Logie Baird] would develop the first working television system using [Nipkow]’s invention. [Baird] with his invention, showing a large Nipkow disk.

(WSFA) - “The Farnsworth Invention” is a fictionalized account ... Philo Farnsworth is on his way to inventing the world’s first television. But media mogul and visionary David Sarnoff ...

Closed-circuit television, invented during World War II for military use, was not widespread in the 1960s, and the Browns proposed using the technology to create the first modern home security system.

Michael Mosley, Cassie Newland and Mark Miodownik describe the scientific achievements of Samuel Morse. He developed Morse code as a rival to Cook and Wheatstone’s telegraph. It was simple and ...