Untitled

Otago Daily Times, Issue 15301, 15 November 1911, Page 9

Darinj the reboot extended manoeuvre* > »j, of the German army there wero m&ajr night v attacks, in which us© was made of thd newly-introduced illuminating plitbli. 1 Ac>_. cording to tho now regulations, tb<*e aro ~ l<» bo employed wherever too configuration.': 4 of tho latld makes their use prefe.ablo ttL: tint of'.tho ordinary' soarchlight.' l Tbo,;t machinery noccssary for ih» uso of tbft 'j latter device U very inconvenient. and ,V\ < especially in roiling and otherwise difficult: V v.< country, where the mkin roanooUTKa tako' 1 . ■;>; pla<x\ it cannot bo used to advantage. The.; illuminating pistols haro not this' dls*d*' ■ vantage,* as they are easily transported Furtlior, tho searchlight iruseleu in vtltyi ' ! and deep-lying plains, as their ray« shoot'. over these and leave thorn apparently in . still deeper shadow. For this reason, such valleys serve as excellent oovori it night, against tbo searchlights. Tbo illuminating ' " pistols have dono away with this adv&ntagh of shelter, as Uvo cartridges which.they throw light up tho deepest and darkest galliot There are two different tortsoor:'f r :' cartridges, producing respectively white add - 1 rod light, The white ones serre «• • clustrefy for illuminating the country, the red ones for signalling purposes betwoeit•' widely separated commandi or even where , tho' distanoo between them U'. 1 - several miles. Hi© illuminating cartridge* ,j develop a light that makes everything within 656 ft visible, and lasts eight to 10'!/ scoonds. A young engineer claims to have dls< ° covered what ho styles oommercialisod i nitrogen power. It has for its obiect the';! harnessing of waste products to utilise th©m 'i fo» locomotion. Pure nitrogen !i cam i pressed in this invention in cylinders up to > 30001b to the squara inch. For the applk ' cation to motor bars it is intendod that • theso vehicles shall carry two long cylinders in pUoo of tho petrol tank, but, nccotdlntf ' • to tho experiments, it will bo ncoessary to V alter tho onglno and build It mow* on the ■'!/ principle of tho steam engine. Tire nitrogen, comprotsed to somo 3000 th per *quu*' inch, V released, and allowed to pass Into a uiutll chambor, whero It expands to lb&lb to tbo squaro Inch, and at that power /! drive* tho piston. The Inventor arfms •*• that it cost* 5s per CO miles to drive a ' oar with petrol fuol, but oontends thai the • same distance oaa be covered oo a. miliar "! cir with nltrofra for 6&