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The Norden sight was designed by Carl Norden, a Dutch engineer educated in Switzerland who immigrated to the U.S. in 1904. In 1911, Norden joined Sperry Gyroscope to work on ship gyrostabilizers, [ 3 ] [ b ] and then moved to work directly for the U.S. Navy as a consultant.
In modern archery, a compound bow is a bow that uses a levering system, usually of cables and pulleys, to bend the limbs. [1] The compound bow was first developed in 1966 by Holless Wilbur Allen in North Kansas City, Missouri, and a US patent was granted in 1969. Compound bows are widely used in target practice and hunting.
A telescopic sight, commonly called a scope informally, is an optical sighting device based on a refracting telescope. [1] It is equipped with some form of a referencing pattern – known as a reticle – mounted in a focally appropriate position in its optical system to provide an accurate point of aim.
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The Oracle: Ancient Delphi and the Science Behind Its Lost Secrets. New York: Penguin Press. Broad, William J. (2006). The Oracle: The Lost Secrets and Hidden Message of Ancient Delphi. New York: Penguin Press. Curnow, T. (1995). The Oracles of the Ancient World: A Comprehensive Guide. London: Duckworth – ISBN 0-7156-3194-2; Evans-Pritchard ...
The user then adjusts the iron sights or scope reticle to align the point of aim with the projected laser dot. Another more commonly used type of laser boresighter is attached to the muzzle of the barrel, either inserted straight into the bore ("arbor" type) or held in alignment with the barrel via a magnet , and projects a laser beam onto the ...
Drawing a bow, from a 1908 archery manual. A bow consists of a semi-rigid but elastic arc with a high-tensile bowstring joining the ends of the two limbs of the bow.An arrow is a projectile with a pointed tip and a long shaft with stabilizer fins towards the back, with a narrow notch at the very end to contact the bowstring.
Figurehead on a model of the French ship Océan. A figurehead is a carved wooden decoration found at the bow of ships, generally of a design related to the name or role of a ship.
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