Automatic Aiming Cannon Could Hit Invisible Aircraft

New anti-aircraft gun aims itself by sounding device to guard America from air raiders.

PEOPLE who lived in London during the late World War will vividly recall the feeling of helplessness that possessed them when Germany bombed that city on several occasions.

They will tell you that the murderous cargoes of bombs were dropped from Zeppelins and Gothas which cruised the thin upper realms of the heavens with nothing more harmful than an occasional searchlight beam touching them. The anti-aircraft guns were powerless. Why? Any aviator familiar with anti-aircraft ordnance could tell you. He would laugh at the thought of an anti-aircraft gun actually scoring a direct hit. Planes brought down by shrapnel from the ground were planes that were just “in the way,” he would tell you.