Selenium cell from prototype Cox selenium-cell magnifier equipment, 1910-1920

Made:
1910-1920 in Unknown place
maker:
Kenwrick Cecil Cox

Creative Commons LicenseThis image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence

Buy this image as a print 

License this image for commercial use at Science and Society Picture Library

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Selenium cell No 5 from prototype Cox selenium-cell magnifier equipment, possibly made by Kenwrick Cecil Cox, 1910-1920.

This is part of a magnifier invented by Kenwrick Cecil Cox, a British engineer who worked in a cable station in the Pacific ocean, on the Pacific Telegraph Cable. The purpose of the magnifier was to cut out the expensive and arduous task of re-sending messages that passed through the cable station on their way to other destinations. This was required because the signals lost clarity over distances of hundreds of miles, meaning that the only way for the messages to reach their destination was for operators to resend the messages manually when they passed from one length of cable to another. The magnifier boosted the signal strength and clarity. The regenerated signal was then suitable for perforating a new tape, or could be transmitted directly. These components are parts of the development prototypes made by Cox, largely in his spare time while working at various cable stations. The production version was in widespread use for over a decade.

On display

Science Museum: Information Age Gallery: Cable

If you are visiting to see this object, please contact us in advance to make sure that it will be on display.

Details

Category:
Telecommunications
Object Number:
1976-269 Pt1
type:
battery
taxonomy:
  • furnishing and equipment
  • tools & equipment
credit:
Donated by P. K. Cox
status:
Permanent collection

Cite this page

Rights

We encourage the use and reuse of our collection data.


Data in the title, made, maker and details fields are released under Creative Commons Zero


Descriptions and all other text content are licensed under a Creative Commons Attribution 4.0 licence

Using our data

Download

Download catalogue entry as json

Our records are constantly being enhanced and improved, but please note that we cannot guarantee the accuracy of any information shown on this website.