Logo: Cable galvanometer designed by Lord Kelvin - click for more information

Hunterian Museum Scientific & Medical Instrument Collections:
GLAHM 113540


This information is © The Hunterian Museum and Art Gallery, University of Glasgow 2017

Click on image to see a larger version

GLAHM 113540: Televisor Scanning Disc - click to view larger image GLAHM 113540: Televisor Scanning Disc - click to view larger image

Televisor Scanning Disc

DES BAIRD,John,Logie circa 1925 Hastings, East Sussex, England DES after NIPKOW,Paul,Julius,Gottlieb,Doctor. 1884 Germany. MANU BAIRD,John,Logie circa 1925 Hastings, East Sussex,

Materials:
Metal
Dimensions:
330mm dia x 1mm
Marks:
Radial incised markings
Notes:
The Baird television system was electromechanical in nature. To transmit an image, a light source was focussed onto the scanning disc (interrupter) which was driven by a motor. The light passing through the disc illuminated the object in numerous vertical strips, every tenth of a second. This light was reflected from the object to a photo-electric cell. The output from the cell was then transmitted to the receiver, which was coupled to a neon glow lamp, the light from which was passed through a condensing lens and then another disc. It was then directed to a screen where the image was constructed. This disc has a row of thirty six radial slots cut in its circumference. This example is not a Nipkow disc .
Keywords:
SCIENTIFIC COLLECTION :

Click here for a printable version

Click here for help with search results

For more information please contact Donal.Bateson@glasgow.ac.uk