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Telescoping in mechanics describes the movement of one part sliding out from another, lengthening an object (such as a telescope or the lift arm of an aerial work platform) from its rest state. [1] In modern equipment this can be achieved by a hydraulics , but pulleys are generally used for simpler designs such as extendable ladders and amateur ...
In mathematics, a telescoping series is a series whose general term is of the form = +, i.e. the difference of two consecutive terms of a sequence (). As a consequence the partial sums of the series only consists of two terms of ( a n ) {\displaystyle (a_{n})} after cancellation.
The former is known as backward telescoping or time expansion, and the latter as is known as forward telescoping. [ 1 ] The approximate time frame in which events switch from being displaced backward in time to forward in time is three years, with events occurring three years in the past being equally likely to be reported with forward ...
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.
A telescoping stock (alternatively collapsible stock) is a buttstock that can retract into and shorten itself (telescoping) in order to make the whole weapon more compact. Telescoping stocks are useful in allowing a rifle , submachine gun , shotgun , or light machine gun to be stored or maneuvered in places it would otherwise have trouble fitting.
A telescope is a device used to observe distant objects by their emission, absorption, or reflection of electromagnetic radiation. [1] Originally, ...
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Telescoping linear actuators are specialized linear actuators used where space restrictions exist. Their range of motion is many times greater than the unextended length of the actuating member. A common form is made of concentric tubes of approximately equal length that extend and retract like sleeves, one inside the other, such as the ...