Welcome to "THE new PERISCOPE" website. This website has been built for the former PE&R Branch Officer (MOC 53) and PERI (MOC ) trades and is being maintained by retired members of the Branch. To fully enjoy the benefits of the site all you have to do is sign-up and once approved you can follow, post and. Making Periscopes. A periscope lets you see over the top of things, such as fences or walls that you aren't tall enough to look over. You can also use it to see around corners. People first started using periscopes in submarines in about , to allow the sailors to see above the water. Later, soldiers in the First World War. A periscope is an optical instrument that uses a system of prisms, lenses or mirrors to reflect images through a tube. Light from a distant object strikes the top mirror and is then reflected at an angle of 90 degrees down the periscope tube. At the bottom of the periscope, the light strikes another mirror and is then reflected into.
: The periscope
|Amateur video english||Our editors will review what you've submitted, and if it meets our criteria, we'll add it to the periscope article. Let us know what you think? Tankany heavily armed and armoured combat vehicle that moves on two endless metal chains called tracks. They typically employ prisms and total internal reflection instead of mirrors, because prisms, which do not require coatings on the reflecting surface, are free teenage porn sextape more rugged than mirrors. Joints in the eyepiece box casting of a periscope for the passage of moving parts, such as the operating gear for the periscope power shift, altiscope, or focusing mechanism, are made in the form of stuffing boxes.|
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|Vintage ass lick||The periscope is used in the submarines to see what is going on the water surfaceIt was used for observation purposes in the trenches during World War IIt is used in some gun turrets gay studs hardcore porn it is used in armed vehicles. Barr and Stroud Limited. Since the size of the exit pupil is equal to the diameter of the objective divided by the periscope magnification, the exit pupil is reduced if the magnification is increased. Examples of periscope design. March Learn how and when to remove this template message.|