A New Electric Lamp

A New Electric Lamp.

A new form of electric lamp, from which important practical results are anticipated, has been devised by Professor Nernst, of the University of Gottingen. It has a filament composed of magnesia mixed with rare earths in place of the ordinary carbon filament, and no vacuum is needed as in other incandescent lamps. But the filament is non-conducting when cold, so that it must first be warmed before a current will pass and cause it to glow. The chief practical difficulty is the original warming of the filament.