selenium cell
Noun
Meaning
a photoelectric cell that uses a strip of selenium
Source: WordNetSynonyms
Hypernyms
Examples
Joel Stebbins at the University of Illinois Observatory used an early selenium cell photometer to produce the first-ever photoelectric study of a variable star.
In its ultimate electronic form, the photophone receiver used a simple selenium cell at the focus of a parabolic mirror.
Moving images were not possible because, in the scanner: "the sensitivity was not enough and the selenium cell was very laggy".