Show THE WONDERS OF electricity I 1 telegram not many people understand the wireless telegraph we confess to a great want of knowledge on that subject but scientists have been working on its mysteries for many years and one by one they come to life waves of light have been known for many years but henry hertz long ago suspected that there were electric waves as well as waves of light and for years he experimented and constructed ted instruments to detect them the books booke tell us that light waves are so small that thousands can be packed within a compass of a single inch while electric waves are so tig big that tha they may be a foot a mile or even thousands of miles in length the human eye can detect tho the small waves naves but not tho the big ones light waves can be reflected refracted and polarized and it was hertz that established the same properties in invisible electric waves and it was he who made the discovery that while visible waves of light are shut off by any substance the electric waves pass th through roligh doors wooden floors and even stone walls and dirt n that fact lies iles the gist of 0 tho wireless telegraph producing electric waves similar to light waves and detect theia at a distance by means of a tuned receiver it was on that marconi Alar cont we went rat to work with tho the idea of making malting electric waves do the same work with his telegraph and now one poulsen P has gone on improving until ho he believes th that atwith with his invention it will bo be comparatively ively easy for neighboring sta tiong to avoid interfering with each others messages and that tho the energy required to send bend the message will be greatly reduced so much so that h he 0 expects after a while that people may mft y talk across the atlantic with no intermediate ter stations when that Is done then it will not seem seen so strange that with further per faction man on ahls planet wilt will be able to send and receive messages to and from mars or venus man talan la Is getting up close to the ante chamber within which Is held the knowledge of how all the worlds arc are guided on their way and the net next thing to be looked for will be the alphabet of the languages which are talked in tho the stars |