LIGHT PROCESS.

Auckland Star, Volume LXXII, Issue 87, 14 April 1941, Page 5

LIGHT PROCESS.

PAPER'S NEW ROLE, i _ 1 i AMAZINGLY THIN SHEETS. < OTTAWA. I lie increasing popularity of the new, fluorescent lighting in Canada has pi veil added importance tu one of the little-' known uses to which paper is put. In (his new method of illumination the 1 invisible light-rays of n mercury vapour lamp are transformed into visible linht

and thus gives a liiglilypleasing light with a tremendous reduction in the amount of power used. i | Each unit of such lighting requires in tliu lighting fixture an appliance known as a condenser, the most important part of which is a special variety! of paper. This paper is exceedingly .thin—about one-tenth of the diameter, of a human hair—and it would take' ialiout 3000 sheets to make a pile an inch; thick. In spite of such amazing thin-i iiess. the paper must he extremely uni-! form and practically air-tight. Although 'it is made from the same woodpulp as' ,is used for ordinary lirown wrapping' paper, the care needed in its manufacture brings tin' cost up to ahout 111ree limes that of ravon varn. I ' ■