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|Daily updates on the latest design and architecture vacancies advertised on Dezeen Jobs. Plus occasional news. Dezeen Jobs Weekly Game of Thrones" hit by piracy from Periscope". CBS News. 15 April 2015 . Retrieved 22 December 2015. c Observer's eye Principle of the lens periscope. The two periscopes differ in the way they erect the image. The left one uses an erecting prism whereas the right uses an erecting lens and a second image plane.

Periscopes allow a submarine, when submerged at a relatively shallow depth, to search visually for nearby targets and threats on the surface of the water and in the air. When not in use, a submarine's periscope retracts into the hull. A submarine commander in tactical conditions must exercise discretion when using his periscope, since it creates a visible wake (and may also become detectable by radar), [10] [11] giving away the submarine's position. The Mijia Glasses also features real-time Xiaomi AI text translation between English and Chinese, as well as intelligent recognition of animals and plants in the scene. Other AR features, such as screen-casting, are promised to come in later updates of the product.

Constine, Josh (8 September 2015). "Periscope Is Secretly Building An Apple TV App". TechCrunch. AOL. a b Walker, Bruce H. (2000). Optical Design for Visual Systems. SPIE Press. p.117. ISBN 978-0-8194-3886-7. A periscope is an instrument for observation over, around or through an object, obstacle or condition that prevents direct line-of-sight observation from an observer's current position. [1] [2]

Swanner, Nate (30 October 2015). "Periscope's Apple TV app is now ready for your weekend binge-watching". TheNextWeb . Retrieved 12 May 2022.|Inuit snow goggles, opera glasses disguised as ladies' handheld fans and experimental sunglass designs from the 1960s feature among a trove of historical eyewear that has gone on display at Design Museum Holon. More Rima Sabina Aouf |Corn husks, wool and yoghurt pots are some of the materials used in a series of experimental spectacles by British eyewear brand Cubitts. More Amy Frearson More reach for your events using Periscope broadcasting". Brand In Motion. 2 February 2017. Archived from the original on 14 February 2017 . Retrieved 13 February 2017.