Similar sets on the ground and in captive balloons would, it is claimed, stop enemy aircraft crossing the frontier. By the use of heavy-oil engines which do not require electrical ignition, German bombers would be immune from the effects of their own rays.
Any electrical ray can be nullified by screening the ignition system. Most aircraft engines are already screened, not on account of rays, but to prevent electrical interference with wireless reception. All the latest RAF. machines equipped with short-wave radio are protected in this No wardrobe is complete without a palm beach suit —it is an all-weather summer suit which is wonderfully cool in wear and looks smart on all occasions.
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Text read from the printed page and cleaned; old type leaves the occasional error.