MILLIONS OF SIGNALS
NEW SENSITIVE CELL A new sensitive cell has been invented which responds to light with such rapidity that it will make it possible to seo much mor® complicated things by wireless than the mere faces seen at present by television. The new device is just an ordinary glass bulb with a small filament, and after it is exhausted some potassium ig forced through the glass into the inside by an ingenious process of electrolysis. The slightest change in the strength of the light falling on the cell is recorded by a change in the amount of electric current it produces. Present-day cells will do this in a millionth part of a second, but this is not quick enough for the needs of electric sight, where to see a quickmoving scene by wireless would mean sending at least three million electric signals a second.
Permanent link to this item
https://paperspast.natlib.govt.nz/newspapers/SUNAK19271129.2.159
Bibliographic details
Sun (Auckland), Volume I, Issue 214, 29 November 1927, Page 15
Word Count
146MILLIONS OF SIGNALS Sun (Auckland), Volume I, Issue 214, 29 November 1927, Page 15
Using This Item
Stuff Ltd is the copyright owner for the Sun (Auckland). You can reproduce in-copyright material from this newspaper for non-commercial use under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International licence (CC BY-NC-SA 4.0). This newspaper is not available for commercial use without the consent of Stuff Ltd. For advice on reproduction of out-of-copyright material from this newspaper, please refer to the Copyright guide.
Log in