In 1937, at a luncheon in his honor concerning the death ray, Tesla stated, "But it is not an experiment ... I have built, demonstrated and used it. Only a little time will pass before I can give it to the world." His records indicate that the device is based on a narrow stream of small tungsten pellets that are accelerated via high voltage (by means akin to his magnifying transformer).
When did Tesla claim to have built the weapon? What was the occasion when he claimed he'd made the death ray? Of what material were the death rays pellets made? What was used to accelerate the tungsten pellets? How much time did he claim had to pass before he gave the ray to the world?