Show IN VENTS INVENTS NEW ELECTRIC C photograph DEVICE engineers odd mach machine ine Is called blydon new york photographs of electrical t cal disturbances can be made in twenty billionths of a second it was announced such photographs van can be made without light the shell fired by the ger german man big bertlin at paris could coufa travel but five thousandths of cof tin nn inch in twenty bli Ilont ilantha lim of af a second not fast enough to make mak id the movement visible in that space of tind A in one fifty millionth it part of a second seea seca light travels twenty feet although it could enc encircle irele tho the globe seven times in 0 one no sec second nd the electrical photography device Is called a it consists of a for ordinary plates 1 and Is provided with electrical coe ct long to so that dis tur bancea bances may be brought brou glit into contact with the sensitized ale lle of tile plate no light Is needed electrical electric at disturbances tur bances can p photograph tai themselves ein selves little Is known of the reason but it appears to involve a principle somewhat similar to that involved in xray when surges occur in trat transmission lines they photograph themselves mr peters said 1 I have never dete detected eted visible light in the camera while photographing to a surge therefore impulses must contain some property in themselves that affect I 1 the plate the instrument for taking photographs continued mr air peters I 1 1 I Is S the only practical device for obtain obtaining 1 n 9 da ta in regard to that type of line disturbance tur bance known as surges photographic plate now glees gives the characteristics ot of surges thus giving engineers n data with which to dev devise ise lit protection the tha device in a nn P A mf f to transmission line lanos s of all kinds and la is connected to them by means of tin an electrostatic electro static potentiometer surges last twenty of a second or or possibly longer tile the li can register them |