Civil defence

Future schemes of air defence
1930s, Air defence, Aircraft, Art, Civil defence, Nuclear, biological, chemical, Periodicals, Pictures

Future schemes of air defence

MONSTER EAR TRUMPETS FOR AIR DEFENCE During the last years of the Great War, sound detectors played an increasingly important part in the air defences of all the belligerents. Since those days they have undergone great development. Here the emperor of Japan is inspecting the huge trumpet-like detectors that work in conjunction with the anti-aircraft

1930s, Aerial theatre, Air defence, Australia, Civil defence, Periodicals, Phantom airships, mystery aeroplanes, and other panics

Anxious nation? — I

At about 5.20pm on Friday, 29 July 1938, hundreds of people saw a mysterious aeroplane diving from high over Hobart. According to Pegasus, the Hobart Mercury‘s aviation correspondent, A large crowd collected near the corner of Liverpool and Murray streets, and traffic was impeded. The machine descended to a comparatively low level, yet not low

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