Experimental Farnsworth "image dissector"


In 1927 inventor Philo T. Farnsworth designed and made this television transmission tube that he called an "image dissector." Visible light was focused on a specially-coated detector at the front of the tube. That coating emitted electrons that were received at the tube's anode. The tube sampled only a small area of the detector at any given moment but by repeatedly scanning the entire detector the image could be converted to electrical signals. Those signals could be reconverted to visible light in a television receiver.

Date Made: 1927

Maker: Farnsworth, Philo T.

Location: Currently not on view

See more items in: Work and Industry: Electricity


Exhibition Location:

Credit Line: from Dr. Philo T. Farnsworth

Data Source: National Museum of American History

Id Number: EM.328789Catalog Number: 328789Accession Number: 276137

Object Name: television transmitting tubec

Measurements: overall: 12 1/4 in x 4 in x 4 1/2 in; 31.115 cm x 10.16 cm x 11.43 cm

Guid: http://n2t.net/ark:/65665/ng49ca746ab-a06b-704b-e053-15f76fa0b4fa

Record Id: nmah_1288388

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