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Photograph of a LASER FOR SPACE — Gas-filled electronic device whose first job will be to greatly sharpen the accuracy of a new space tracking radar is fired up by an engineer at Sperry Rand's Electro...
ARP23A16_036

Photograph of a LASER FOR SPACE — Gas-filled elect...

Fig 1: Illustration showing Parabolic trajectory and trajectory board with adjusting screws
ARP23A16_031

Fig 1: Illustration showing Parabolic trajectory a...

German re-armament and militarisation: Second World War pocket battleship 'Admiral Graf Spee'
ARP11A05_137

German re-armament and militarisation: Second Worl...