Democratic Sentinel, Volume 17, Number 37, Rensselaer, Jasper County, 29 September 1893 — Artificial Northern Lights. [ARTICLE]

Artificial Northern Lights.

Artificial miniature auroras of the borealis variety have been produced by both De la Rive, the French savant, and Lenstrom, the Swedish astronomer. In Professor Lenstrom’s experiments, which were made in Finland, the peak of a high mountain was surrounded with a coil of wire, pointed at intervals with 'tingibs. The wire was .then changed yyith electricity, whereupon a brilliant aurora appeared above the moud&in, in which spectroscopic analysis revealed the greenish-yellow rays so characteristic in nature’s display of “northern lights.”