Iridium

(noun.) a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium.

朱厄尔录入

• A great variety of lamps was made of the platinum-iridium type, mostly with thermal devices to regulate the temperature of the burner and prevent its being melted by an excess of current. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• Iridium and Osmium discovered by Tenant, and Cerium by Berzelius. Edward W. Byrn. 十九世纪发明进展.

手打:索菲