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]

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The meaning of PERISCOPE is a tubular optical instrument containing lenses and mirrors by which an observer obtains an otherwise obstructed field of view.

periscope, optical instrument used in land and sea warfare, submarine navigation, and elsewhere to enable an observer to see his surroundings while remaining under cover, behind armour, or …

Mar 21, 2024 · Periscope was a live streaming video app developed by Joe Bernstein and Kayvon Beykpour in 2013. The app was acquired by Twitter in 2015 before it was launched to the …

Periscope was acquired by Twitter before it was launched in 2015; however, Twitter shuttered the service at the end of March 2021 because of declining usage and the high cost of maintenance.

Periscope was a mobile app launched in 2014 that allowed users to broadcast live video to a global audience. Acquired by Twitter in 2015, it quickly gained popularity but faced declining …

PERISCOPE definition: 1. a long, vertical tube containing a set of mirrors that gives you a view of what is above you…. Learn more.

Jun 9, 2025 · A periscope is an optical instrument that enables viewing over, around, or through obstacles when a direct line of sight is not possible. It reflects light using angled mirrors or …

A periscope is a simple optical tool that lets you see over walls or around corners. It uses two mirrors or prisms placed at an angle to reflect light from the object to your eyes.