Search Results for: Illuminated signs
the lead chambers of a sulphuric acid plant. he found the element associated with tellurium (after the latin tellus, earth) and called it selenium (after the greek σελενη, moon). in , willoughby smith, an english electrical engineer, discovered that selenium's electrical resistance decreased when illuminated
the lead chambers of a sulphuric acid plant. he found the element associated with tellurium (after the latin tellus, earth) and called it selenium (after the greek σελενη, moon). in , willoughby smith, an english electrical engineer, discovered that selenium's electrical resistance decreased when illuminated...
https://www.umicore.com/en/about/elements/selenium/