AMERICAN CABLE NEWS.

Hokitika Guardian, 21 August 1925, Page 3

AMERICAN CABLE NEWS.

[Australia A N.Z. Cable Association.] WIRELESS RESEARCH. A NOTABLE ACFfTEV MAI ENT. (Received this day at 11.2 d a.in.) WASHINGTON. Ail". HO. Tbe existence of it radio dolled in" roof in the high levels of tbe earth's atmosphere, accounting for the fading illtd kUip in distance in broadcast reception. lias been established (hrough investigations conducted by the Naval Research Laboratory in conjunction with the Carnegie Institution at Washington. .Mr Wilhttr announced that the experiments also demonstrated the presence of two waves in broadens! in" transmission. One wave called the horizontal wave arrives via the earth, and the other, the vertical wave, arrives via the shy. There is a layer, or ceiling, in the ironizod region, varying in height above the earth to the alrnospherie conditions. It i-, generally over one hundred miles high. The horizontal wave moves along the earth’s surface until if slides oil tangentially into the other vertical nave, and striking under the sky ceiling i-. deflected downward, hilling the earth at a distance dependent on the angle of impact with the ceiling, After striking the earth it rebound-, and the waves are deflected upwards :it an tingle and again strikes tbe skv ceiling. Tbe rebounding process continues round the world and (•rentes lie socalled skip distance. Mr Wilbur announced Ibc experiments were being continued, bill said tbe results already obtained were the nearest approach to a solution of the unsolved problems of radio as yet made, though the chief bc-noiii at present will la' to commercial radio, the eventual achievement will be tbe building of a liigb frequency transmitting station, costing sixty thousand dollars, giving a better service and longer range than the present high power two million dollar stations, while tin* cost, ol operation will lie correspondingly reel need. The existence of the root layer had I>een suspected for some time. Mr Heaviside (England) and Mr Kennerly (l T nitod States), working independently, discovered it theoretically, though not as an established fact.