Evening Republican, Volume 21, Number 59, Rensselaer, Jasper County, 12 March 1917 — CAN SEE IN DARK BY NEW DISCOVERY [ARTICLE]

CAN SEE IN DARK BY NEW DISCOVERY

Invention by an Italian, Who Applies “F” Rays for Use on Land and Sea. A new discovery is reported this week from Rome, Italy. Signor Giulio Ulivi, the inventor of “F” rays, who was badly injured in a laboratory experiment some time ago, and who only recpvered after many months spent in a military hospital at Milan, now announces that he has succeeded in applying the invisible infra red waves beyond the red band of the spectrum to detect objects in darkness by determining their length. The new invention is known as “scotoscopia,” meaning vision in darknets, and consists of a searchlight emitting invisible rays which illuminate distant objects and render them visible only to the observer. Thus by means of scotoscopic searchlights warships are enabled r to_ see without being seen. Photographs, or rather Hectographs, of objects in darkness can be taken and enlarged so that enemy coasts can be mapped. The Invention can be used on land and sea as well as in the air, so that it will be found most useful in waging war against sfibmarines and in defense against aerial raids. Signals can be exchanged invisibly between ships equipped with scotoscopic apparatuses, and other practical applications of this wonderful invention can easily be obtained.