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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 ] In its simplest form, it consists of an outer case with mirrors at each end set parallel to each other at a 45° angle.
Typically the missile is steered with a joystick, and its path is observed through a periscope-type telescopic sight. The missiles are usually equipped with a magnesium flare in the base that automatically ignites on launch and allows the gunner to visually track the fast-moving missile in a manner similar in concept to tracer ammunition .
Combining a number of mirrors, prisms, and lenses produces compound optical instruments which have practical uses. For example, a periscope is simply two plane mirrors aligned to allow for viewing around obstructions. The most famous compound optical instruments in science are the microscope and the telescope which were both invented by the ...
Sight (device) Silver halide; Single-photon avalanche diode; Slit lamp; SMASH Handheld; Spatial light modulator; Spectro-Polarimetric High-Contrast Exoplanet Research; Spectrophotometer; Stereoscope; Submarine periscope; Sun photometer
The 9M14 Malyutka (Russian: Малютка; "Little one", NATO reporting name: AT-3 Sagger) is a manual command to line of sight (MCLOS) wire-guided anti-tank guided missile (ATGM) system developed in the Soviet Union. It was the first man-portable anti-tank guided missile of the Soviet Union and is probably the most widely produced ATGM of all ...
Edme Hippolyte Marié-Davy (28 April 1820 – 26 July 1893) was a French chemist and inventor during the 19th century. He was born in Clamecy, Nièvre.. In 1854, he invented the first naval periscope, consisting in a vertical tube with two small mirrors fixed at each end at 45°.
The commander is seated on the left of the turret and the gunner on the right. The commander is provided with seven periscopes, a periscopic sight. The commander's infrared night sight has a magnification of x6. The gunner has two observation periscopes, a telescopic sight and a one-piece lifting and swivelling hatch cover.
An Elder-type periscope stock fitted to an American M1903 Springfield rifle (1918); the rifle is also fitted with a 25-round magazine. [15] The Dutch M.95 periscope rifle. Two Lee–Enfield periscope adaptations were patented in September 1915. The first by J.E. Chandler was able to fire a full magazine before being dismounted, thanks to a ...