Actor Michael Caine travelling on the underground train at Aldwych tube station during
Actor Michael Caine travelling on the underground train at Aldwych tube station during filming for his latest film "Drabble".
29th July 1973
1970s, 20th Century, Actor, Celebrity, Extras, Film, Rail, Transport, Travelling, Tube
Early electronic valve, diagram
Audion amplifier. Diagram of an Audion triode valve that was the first amplifier. It was invented by Lee De Forest in 1907. De Forest worked on vacuum tubes, which act as diodes (devices that allow electricity to flow one way only). The addition of a grid (yellow) allowed the amplification of weak radio signals (top), which made radio a practical method of transmitting information
© SHEILA TERRY/SCIENCE PHOTO LIBRARY
Growth of the submarine by G. H. Davis
The growth of the submarine from 1901 to 1912. In chronological order, they are: 1901-2 Holland Class, 1903-5 A Class, 1904-6 B Class, 1906-9 C Class, 1911 D Class and 1912 E Class. The latter is in silhouette, as the details cannot be published'.
© Illustrated London News Ltd/Mary Evans
1901, 1912, Armed, British, Class, Davis, Displacement, Escalation, Growth, Gun, Guns, Holland, Large, Naval, Navy, Preparation, Prewar, Silhouette, Size, Small, Sphere, Submarine, Tons, Torpedo, Torpedoes, Transport, Tube, Tubes, Weapon, Weapons, Weight