WIRELESS ’PHONES.

Gisborne Times, Volume LXVIII, Issue 10734, 3 November 1928, Page 7

WIRELESS ’PHONES.

TEN-METRE WAVE LENGTHS. TIIHtTY-MINUTE TALK WITH BRISBANE AMATEUR. iPreBB Association^ ASHBURTON, Nov. 2. D Buchanan, of Ashburton, Station 3AR, reports that the American station fIXV was first heard here at. 7.10 a.m. on September 30, and at 2 p.m. on October 4. 6XV advised his aerial power as six kilowatts. Portions of American amateur Morse communications on this wave length have been logged during October, but except in tho case of 6XV transmissions faded before the messages were completed. The best work of the local station on ten metres was a thirty-minute Morse two-way communication with a Brisbane amateur, 488, on September 30. Observations to date indicate that this wave length is very erratic and unreliable. ROND* OF UNITY. ACTUAL SPEEOIf SUPERIOR TO WRITTEN PAGE. United Press Assn, by El. Tel. Copyright (Australian Pres? Assn.) . (Received Nov. 2, 7.10 p.m.) NEW YORK, Nov. 1. The New York Times, in a leader eommoiTEng- on radio telephonic conversation between the United States and Australia, says: “On such occasion, the usual speeches about the bonds of blood, amity and commerce take on an unusual sincerity. Language in letters and the printed page are an effective bond, but when you can actually hear a man’s voice you fee] very close to him indeed.” SOME MORE WONDERS.

If we are to believe all'we road, wonders will never cease.

“Wireless in the waistcoat pocketlias almost been realised.” says one of the Berlin papers in reporting the claims put- forward by Professor Esau. of Jena University, in an address to a scientific organisation at Bremen. But that its 6nly one of tho results of the experiments carried out during the last twelve months by this specialist with ultra-short waves (three metres and less). He believes that his discoveries will also be of invaluable service to medicine. In the field of communication he succeeded with a fraction of a watt, usmg ordinary broadcasting tubes without antennae in covering distances of 25 kilometres (151 miles) and more. With higher energy he increased this distance to 400 kilometres (250 miles), and he hopes in the eariv future to extend it to 500. He also succeeded m telephoning with these short waves. The sender ho employs is no larger than a cigar box and “lie has constructed a receiver which solves with amazing simplicity the problem of detecting ultra-short waves.” Professor Esau had already used ultra-short waves to kill mice. rats, and rabbits, hut lie has now demonstrated their therapeutic value. Of thirty mice which had been inoculated with tuberculosis, half were exposed to ultra-short waves and the other half wtoro not. The latter gradually sickened and died, whereas fifteen treated with the waves “remained as fresh and lively as before inoculation.” Careless treatment with ultra-short waves may, however, be dangerous to human life, in consequence, as the Professor believes, of the transformation of albuminous substances which it causes *n the body. When a human being is exposed to the influence of these waves, his temperature rises one degree per second. Herr Esau also found thatbleeding wounds rapidly closed and cicatrise when treated with ultrashort waves