Adriano de Paiva
Appearance
![](http://upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Adriano_de_Paiva_Brand%C3%A3o_%28Conde_de_Campo_Belo%29_-_Jos%C3%A9_Alberto_Nunes.png/220px-Adriano_de_Paiva_Brand%C3%A3o_%28Conde_de_Campo_Belo%29_-_Jos%C3%A9_Alberto_Nunes.png)
Adriano de Paiva (1847–1907) was a Portuguese scientist who was one of the pioneers of telectroscope. He worked at the Politechnical Academy of Porto and conducted research into selenium as a material to transmit images.
His work followed the discovery of photoconductivity in selenium by Willoughby Smith in 1873. In the 19th century he suggested the use of a chemical that would enable images to be transmitted at a considerable range.
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