One of the mysteries of the English language finally explained.
1Relating to a periscope.
- ‘When the armoured shutter is in place the driver uses a periscopic sight.’
- ‘The commander has a periscopic day sight, a television monitor displaying the image from the gunner's thermal sight and six unity vision periscopes.’
- ‘The commander's cupola in the centre of the vehicle is equipped with five periscopic sights which give 360° vision.’
- ‘The test pilots found the double-slot flaps and quick-release engine cowlings most admirable but, oddly, armament was only briefly checked out and one of the things they did not like was the periscopic system for the twin turrets.’
- 1.1 (of a lens or an optical instrument) giving a wide field of view.‘a periscopic sextant’
- ‘The plane's captain added to the error by steering the plane on compass alone, backed up by dead reckoning and astro-fixes from a periscopic sextant.’
- ‘For targets at less than 1,000 meters, the missile can be guided by eye; for longer ranges, the 8x magnifying periscopic sight must be used.’
- ‘Station equipment includes handy refueling controls, a wide viewing window facing the aft ‘customer’ position and additional periscopic viewing arrangements for traffic management.’
- ‘The equipment projected the image of the sun through a periscopic lens and reflected it on a sheet of paper.’
- ‘A telescopic view from the outside and a periscopic view from the inside permit, as expressed by Walter Benjamin, ‘telescoping the past with the present’, allowing the viewer to peer at the old buildings through that spyglass.’
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