prismatic$63978$ - meaning and definition. What is prismatic$63978$
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What (who) is prismatic$63978$ - definition

EXPLOSIVE-BASED PROPELLANT USED IN LARGE ARTILLERY AND SHIP'S GUNS
Prismatic powder

Brown powder         
Brown powder or prismatic powder, sometimes referred as "cocoa powder" due to its color, was a propellant used in large artillery and ship's guns from the 1870s to the 1890s. While similar to black powder, it was chemically formulated and formed hydraulically into a specific grain shape to provide a slower burn rates with neutral or progressive burning, as opposed to the faster and regressive burn typical of randomly shaped grains of black powder produced by crushing and screening powder formed into sheets in a press box, as was typical for cannon powder previously.
Prism sight         
  • QF 18 pounder]] field gun. Prisms are marked H and F. (cirka 1913)
  • ACOG]] fitted
  • An [[Elcan]] SpecterOS 4x prism sight with a Shield Sights reflex sight mounted on top.
TYPE OF SIGHT CONSTRUCTED USING PRISMS IN ADDITION TO OPTICAL LENSES
Prismatic sight; Prismatic scope; Prism scope
A prism sight or prismatic sight, sometimes also called prism scope or prismatic scope, is a type telescopic sight which uses a roof prism for its image-erecting system (instead of the series of relay lenses found in traditional telescopic sights). The use of prisms makes it possible to construct a shorter and lighter sight, or with an offset between the eyepiece and objective axes.
Prismatic compass         
NAVIGATION AND SURVEYING INSTRUMENT
Prismatic compass (Surveying); Prismatic compass (surveying)
A prismatic compass is a navigation and surveying instrument which is extensively used to find out the bearing of the traversing and included angles between them, waypoints (an endpoint of the lcourse) and direction. Compass surveying is a type of surveying in which the directions of surveying lines are determined with a magnetic compass, and the length of the surveying lines are measured with a tape or chain or laser range finder.

Wikipedia

Brown powder

Brown powder or prismatic powder, sometimes referred as "cocoa powder" due to its color, was a propellant used in large artillery and ship's guns from the 1870s to the 1890s. While similar to black powder, it was chemically formulated and formed hydraulically into a specific grain shape to provide a slower burn rates with neutral or progressive burning, as opposed to the faster and regressive burn typical of randomly shaped grains of black powder produced by crushing and screening powder formed into sheets in a press box, as was typical for cannon powder previously.