Category:Welsbach

Wels"bach, a.

Defn: of or pertaining to auer von welsbach or the incandescent gas Burner invented by him. -- welsbach burner, a burner in which the Combustion of a mixture of air and gas or vapor is employed to heat To incandescence a mantle composed of thoria and ceria. The mantle is Made by soaking a "stocking" in a solution of nitrates of thorium and Cerium (approx. 99 : 1), drying, and, for use, igniting to burn the Thread and convert the nitrates into oxides, which remain as a Fragile ash. The light far exceeds that obtained from the same amount Of gas with the ordinary fishtail burner, but has a slight greenish Hue.