Other people such as Michael I. Pupin, W. Schloemilch, and Hugo Gernsback
have also been given credit for the discovery of this device; however,
Reginald Fessenden, who was also responsible for the development of AM radio,
was the first to put it to use. The electrolytic detector was sometimes called
the Schlömilch cell, the Ferrié cell, or the Fessenden cell.
See also in The book of science:
Readings on wikipedia: