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The compound bow has its string applied to pulleys ( cams ), and one or both of the pulleys have one or more cables attached to the opposite limb.
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compound and bow
The workings can be compared to a modern compound bow system.
A compound crossbow is a modern crossbow and is similar to a compound bow.
This limb stiffness makes the compound bow more energy efficient than other bows, but the limbs are too stiff to be drawn comfortably with a string attached directly to them.
The compound bow has the string attached to the pulleys, one or both of which has one or more cables attached to the opposite limb.
Other types of compound bows use either ( one or both ) cam shaped or eccentrically mounted pulleys in order to provide a " let off ", such that the archer is not holding against the maximum draw weight of the bow while trying to aim.
At the bow and the stern builders were able to create hollow sections, or compound bends, at the waterline making the entry point very fine.
They are popular with compound bow hunters as it allows one piece of equipment to be carried in the field without encumbering the hunter's body.
A compound bow is a modern bow that uses a levering system, usually of cables and pulleys, to bend the limbs.
The limbs of a compound bow are much stiffer than those of a recurve bow or longbow.
This limb stiffness makes the compound bow more energy-efficient than other bows, in conjunction with the pulley / cams.
The use of this levering system gives the compound bow a characteristic draw-force curve which rises to a peak weight and then " lets off " to a lower holding weight.
The compound bow is little-affected by changes in temperature and humidity and it gives superior accuracy, velocity, and distance in comparison to other bows.
The compound bow was first developed in 1966 by Holless Wilbur Allen in Missouri, and a US patent was granted in 1969.
The compound bow has become increasingly popular.
In the United States, the compound is the dominant form of bow.
The central riser of a compound bow is usually made of aluminium or magnesium alloy, and many are made of the aircraft-grade 6061 aluminium alloy.
This let-off enables the archer to accurately shoot a compound bow with a much higher peak draw weight than other bows ( see below ).
One manufacturer, Concept Archery, is known for producing a compound bow with 99 % let-off.
The compound bow operates with a very different weight profile, reaching its peak weight within the first few inches of the draw, and remaining more flat and constant until the end of the cycle where the cams " let-off " and allow a reduced holding weight.
This manipulation of the peak weight throughout the draw ( accomplished by the elliptical shape of the cams that change leverage and mechanical advantage ) is why compound bows store more energy and shoot faster than an equivalent peak weight recurve bow or longbow.
* When a compound bow is drawn, the limbs are pulled in toward each other, by the buss cables, unlike a longbow or recurve where the limbs flex in the direction of the bow string.
compound and has
Evidence for this has been found in Sibudu Cave, South Africa and the compound glues used were made from plant gum and red ochre.
That implies the several individual states to be interconnected in such a way, that they still keep their own sovereignty ; but the resulting compound also has state-character ( Bundesstaat ).
An allene is a compound in which one carbon atom has double bonds with each of its two adjacent carbon centres.
A famous example of a bromine-containing organic compound that has been used by humans since ancient times is the fabric dye Tyrian purple.
Mu Bai and Shu Lien trace the theft to Governor Yu's compound and learn that Jade Fox has been posing as Jen's governess for many years.
The most common compound of chlorine, sodium chloride, has been known since ancient times ; however, around 1630, chlorine gas was obtained by the Belgian chemist and physician Jan Baptist van Helmont.
Celery seeds contain a compound, 3-n-butylphthalide, that has been demonstrated to lower blood pressure in rats.
CamelCase ( or camel case ), also known as medial capitals or Pascal case, is the practice of writing words with some inner uppercase letters, such as compound words or phrases in which the elements are joined without spaces, while each element has a capital letter within the compound.
Italian " avere " and " essere " as auxiliaries for forming compound tenses are used similarly to French " avoir " and " être ", Spanish only retains " haber " and has done away with " ser " in forming compound tenses, which are no longer used in either Spanish or Portuguese.
Liberty and security of the person are taken as a " compound " concept-security of the person has not been subject to separate interpretation by the Court.
For example, the chemical compound n-hexane has the structural formula, which shows that it has 6 carbon atoms arranged in a chain, and 14 hydrogen atoms.
The stevia plant contains a compound known as steviol which, when extracted, has 300 times the sweetness of sugar while having minimal impact on blood sugar.
* DNA detection: the compound ethidium bromide, in aqueous solution, has very little fluorescence, as it is quenched by water.
A heterocyclic compound is a cyclic compound that has atoms of at least two different elements as members of its ring ( s ).
It has been suggested that Horsa may be a hypocorism for a compound name whose first element was hors.
An icosidodecahedron has icosahedral symmetry, and its first stellation is the compound of a dodecahedron and its dual icosahedron, with the vertices of the icosahedron located at the midpoints of the edges of either.
A compound which has two immiscible hydrophilic and hydrophobic parts within the same molecule, is called an amphiphilic molecule.
More specifically, a compound has to be stable or metastable at 25 ° C.
A mineral is an element or chemical compound that is normally crystalline and that has been formed as a result of geological processes.
compound and its
The most important factor in determining what properties the end-product will have is quite naturally the type of hydroxyl-rich compound that is used in its production.
Known to the Iranians by the Pahlavi compound word kah-ruba ( from kah “ straw ” plus rubay “ attract, snatch ,” referring to its electrical properties ), which entered Arabic as kahraba ' or kahraba, it too was called amber in Europe ( Old French and Middle English ambre ).
Fleming postulated the effect was mediated by an antibacterial compound named penicillin, and that its antibacterial properties could be exploited for chemotherapy.
There were three main kinds of harpoon that the Aleut ’ s used: a simple harpoon, with a head that kept its original position in the animal after striking, a compound ( toggle-head ) harpoon in which the head took a horizontal position in the animal after penetration, and the throwing-lance used to kill large animals.
A compound is a substance with a particular ratio of atoms of particular chemical elements which determines its composition, and a particular organization which determines its chemical properties.
By Raoult's law, some of the target compound will vaporize ( in accordance with its partial pressure ).
If we reciprocate such a polyhedron about its intersphere, the dual polyhedron will share the same edge-tangency points and so must also be canonical ; it is the canonical dual, and the two together form a canonical dual compound.
Devanagari (; ; Devanāgarī — compound of " deva " () and " nāgarī " () ), also called Nagari ( Nāgarī,, the name of its parent writing system ), is an abugida alphabet of India and Nepal.
* Enthalpy of formation, defined as the enthalpy change observed in a constituent of a thermodynamic system when, one mole of a compound is formed from its elementary antecedents.
Gleichschaltung, as a compound word, is better comprehended by those who speak other languages by listing its predecessory uses in German.
When studying inorganic compounds, one often encounters parts of the different classes of inorganic chemistry ( an organometallic compound is characterized by its coordination chemistry, and may show interesting solid state properties ).
Among its organometallic compounds is ferrocene, the first sandwich compound discovered.
Other words can intervene between a base-word and its genitive determinant, and occasionally between the elements of a compound word ( tmesis ).
In addition, the isotopic composition of an element can vary depending on its source, hence its contribution to the mass of even a pure stoichiometric compound may vary.
Although a Dutch spectacle maker created the compound lens and inserted it in a microscope around the turn of the seventeenth century, and Galileo had applied the principle of the compound lens to the making of his microscope patented in 1609, its possibilities as a microscope had remained unexploited for half a century, until Robert Hooke improved the instrument.
An inflectional rule takes a stem, changes it as is required by the rule, and outputs a word form ; a derivational rule takes a stem, changes it as per its own requirements, and outputs a derived stem ; a compounding rule takes word forms, and similarly outputs a compound stem.
* Mass spectrometry indicates the molecular weight of a compound and, from the fragmentation patterns, its structure.
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