Cerium

(noun.) a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group.

约翰校对

• Iridium and Osmium discovered by Tenant, and Cerium by Berzelius. Edward W. Byrn. 十九世纪发明进展.
• He made a cylindrical mantle of thin fabric, and then soaked it in a solution of thorium and cerium until it became saturated with the chemical. 伯莎M.克拉克. 科学通论.
• When certain substances, such as thorium and cerium, are heated, they do not melt or vaporize, but glow with an intense bright light. 伯莎M.克拉克. 科学通论.
• The mantle thus impregnated with thorium and cerium is placed on the gas jet, but before the gas is turned on, a lighted match is held to the mantle in order to burn away the thin fabric. 伯莎M.克拉克. 科学通论.
• After that came a lot of experimenting--covering the wire with oxide of cerium and a number of other things. 鲁伯特·萨金特·荷兰. 历史性发明.

整理:威廉