Movies have also made them the submarine's most familiar feature. The device uses the image-forming properties of combined inclined mirrors. The kaleidoscope was invented by Sir David Brewster around 1816 and patented the following year. How can you improve upon the design of your periscope? Periscopes. Traditionally, periscopes offered the submerged submarine its only glimpse of the outside world. Periscopes are optical instruments that can afford submariners a limited though vital visual picture outside their windowless hull. A periscope is an optical instrument that uses a system of prisms, lenses, or mirrors to reflect images through a tube. A periscope is an instrument for observation from a concealed position.In its simplest form it consists of an outer case with mirrors at each end set parallel to each other at a 45-degree angle. Light from a distant object strikes the top mirror and is then reflected at an angle of 90 degrees down the periscope tube. A periscope camera derives its name from the eponymous instrument used on ships or submarines that allows users to see objects above the sea level, or … Light from a distant object strikes the top mirror and is then reflected at an angle of 90 degrees down the periscope tube. Periscope. A periscope is a more complicated instrument than a compass. PeriScope is a PC based Cardiovascular Analysis System that uses simultaneous Non Invasive Blood Pressure measurements from four limbs and ECG waveform to calculate important parameters like Pulse Wave Velocity (PWV), Arterial Stiffness Index (ASI), Ankle Brachial Index (ABI), Central Aortic Pressure Values and Ejection Slope etc. Kaleidoscope. Or, have you seen another instrument that works like a periscope? Have you ever seen a periscope used? A periscope is an instrument to monitor over, around, or through some object, obstacle or condition. 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.In its simplest form, it consists of an outer case with mirrors at … The most basic periscope contains: Therefore, we can say that the periscope is the optical instrument that allows viewing those objects which are not in direct line of sight of view. Those conditions may prevent direct line-of-sight observation from the observer’s current position. A periscope is a device used on submarines to view above the water's surface when submerged. A periscope is an optical instrument that uses a system of prisms, lenses or mirrors to reflect images through a tube. A periscope is an optical instrument that allows objects that are not in direct line of sight to be viewed. A periscope is an optical instrument that uses a system of prisms, lenses, or mirrors to reflect images through a tube. 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