periscope


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periscope 

An optical instrument using two right angle reflectors in order to allow observation of an object from behind a shield or around an obstruction where direct vision is impossible. It has many applications, especially in the military forces (e.g. in tanks, submarines). See periscopic lens.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann
References in periodicals archive ?
Looking through the periscope right after Waddle did, he saw what looked to him at the time like a whale-watching ship ''because it looked a little smaller than what it turned out to be.''
I swung the periscope to watch the reaction ofthe destroyers.
Quad's acquisition of Periscope supports and accelerates the company's ongoing Quad 3.0 transformation as an integrated marketing solutions provider that reduces complexity, and improves process efficiencies and marketing spend effectiveness.
To broadcast from an Android device, you will need the Periscope Producer app, along with a Ricoh Theta S or an Orah 4i.
"The integration allows broadcasters to leverage Twitter's audience," Periscope's head of engineering Sara Haider said toForbes.
The "Sunny Optical Folded Optics Periscope Camera Module" report has been added to ResearchAndMarkets.com's offering.
The same page gives information about the camera assembly, which includes a main lens and at least one periscope auxiliary lens.
A spokesman for the Marine Accident Investigation Branch said: "In November we were notified of a close-quarters incident between the Stena Superfast VII and a submarine operating at periscope depth.We have carried out a preliminary assessment of the evidence in this case and the chief inspector of marine accidents has decided to open a safety investigation.
30 November 2018 - US-based investment bank Petsky Prunier advised US-based creative agency Periscope, Inc on its pending sale to US-based marketing solutions provider Quad/Graphics, Inc.
The post Twitter unveils live audio-only broadcasts from Periscope appeared first on TahawulTech.com.
Users of both the Twitter app and the Periscope app on iOS can now launch audio-only streams in the same way they would have started video Periscope streams before.
"First and foremost, it is Periscope (Twitter) who are responsible for any copyright violation.