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# Topic: Length

###### In the News (Sun 27 May 18)

 length The Egyptian cubit was developed about 3000 BC, the unit was based on the length of the arm (from the elbow to the extended finger). When measuring length in the customary system the common units used are inches, feet, yards, and miles. Units of length measure height, width, length, depth, and distance. www.coe.uh.edu /archive/science/science_lessons/scienceles3/length/length.html   (0 words)

 PlanetMath: length The length of a line segment is the distance between its startpoint and its endpoint. The length of a circle's side is called its circumference. This is version 2 of length, born on 2007-01-02, modified 2007-01-02. planetmath.org /encyclopedia/BasicLength.html   (131 words)

 Length - Wikipedia, the free encyclopedia Length is the metric of one dimension of space. Length is commonly considered to be one of the fundamental units, meaning that it cannot be defined in terms of other dimensions. Length is measured by a variety of units. en.wikipedia.org /wiki/Length   (275 words)

 Length Length is a one-dimensional concept related to the geometric concepts of direction and line. Length measures need to be investigated in the many practical situations in which they occur, for example, as length, width, depth, height, thickness or closeness of objects. Measuring the length of objects using non-standard or informal units is the third stage in the learning sequence. www.nzmaths.co.nz /Measurement/Length/Length.htm   (1724 words)

 Length of a module - Wikipedia, the free encyclopedia In abstract algebra, the length of a module is a measure of the module's "size". It is defined as the length of the longest ascending chain of submodules and is a generalization of the concept of dimension for vector spaces. The length of the cyclic group Z/nZ (viewed as a module over the integers Z) is equal to the number of prime factors of n, with multiple prime factors counted multiple times. en.wikipedia.org /wiki/Length_of_a_module   (400 words)

 Clemson U. Physics Tutorial: Measuring Devices The vernier is convenient when measuring the length of an object, the outer diameter (OD) of a round or cylindrical object, the inner diameter (ID) of a pipe, and the depth of a hole. When using a meter stick to measure length, for example, it is necessary to estimate the measurement's final digit (tenths of a millimeter). Therefore, the length of the auxiliary scale is 9 mm. phoenix.phys.clemson.edu /tutorials/measure   (1112 words)

 Distance and Length conversion online. You can check some examples of HTML link code for you to cut and paste to your site. Feel free to use this button for linking to Distance and Length conversion page: Distance and Length conversion factors, conversion charts page www.convert-me.com /en/convert/length   (254 words)

 Online Conversion - Length and Distance Conversions Common Length Conversions A few of the more common length and distance units. All Length Conversions Nearly 300 different length and distance units. Metric Length Conversions Just the metric length and distance units. www.onlineconversion.com /length.htm   (113 words)

 Length—Evolution from Measurement Standard to a Fundamental Constant The meter (m) is the Si unit of length and is defined as the length of the path traveled by light in vacuum during the time interval of 1/299 792 458 of a second. The length standard was disseminated to the national laboratories through the use of artifact meters, which were accurate (but not identical) replicas of the prototype meter. The ability to transfer the length standard to practical measurements is influenced by the index of refraction (n) of the beam path of the measuring instrument since the wavelength of the HeNe laser (633 nm) is air is smaller than its vacuum wavelength by 2.7 parts in 10 www.mel.nist.gov /div821/museum/length.htm   (1598 words)

 CSS2 syntax and basic data types in this specification) is an optional sign character ('+' or '-', with '+' being the default) immediately followed by a (with or without a decimal point) immediately followed by a unit identifier (e.g., px, deg, etc.). It is recommended that the reference pixel be the visual angle of one pixel on a device with a pixel density of 90dpi and a distance from the reader of an arm's length. Absolute length units are only useful when the physical properties of the output medium are known. www.w3.org /TR/REC-CSS2/syndata.html   (4673 words)

 Mass Transport: Diffusion Length If the diffusion length is much longer than the system size, the profiles of concentration must be essentially linear, and are independent of time (if diffusion is the only thing happening). Note that the relevant time used to find the diffusion length will often be the residence time of gases in the reactor. An important example is the ratio between the system length and the diffusion length, typically calculated with the time set to the residence time (the average time gases are in the reactor). www.batnet.com /enigmatics/semiconductor_processing/CVD_Fundamentals/xprt/diffusion_length.html   (785 words)

 CLHS: Function LENGTH   (Site not responding. Last check: ) If sequence is a vector with a fill pointer, the active length as specified by the fill pointer is returned. (length "abc") => 3 (setq str (make-array '(3) :element-type 'character :initial-contents "abc" :fill-pointer t)) => "abc" (length str) => 3 (setf (fill-pointer str) 2) => 2 (length str) => 2 Should be prepared to signal an error of type type-error if sequence is not a proper sequence. www.lisp.org /HyperSpec/Body/fun_length.html   (67 words)

 Length dependence of active force production in skeletal muscle -- Rassier et al. 86 (5): 1445 -- Journal of Applied ... length on the descending limb of the force-length curve. stability of sarcomere length on the descending limb of the force-length I segment lengths and thin filament periods in skeletal muscle fibers of the Rhesus monkey and the human. jap.physiology.org /cgi/content/full/86/5/1445   (7134 words)

 Clock Pendulum Length Adjustment The most common method to adjust the correct pendulum length found in clock literature involves counting teeth and pinions to calculate how many revolutions per hour the escape wheel must make, followed by determining how many beats per hour the clock was designed to make and therefore how long the pendulum should be. Record the error and the length of the pendulum (for example, from the middle of the suspension spring to the middle of the pendulum bob). The last column shows the factor by which the pendulum length reading is to be multiplied to obtain the desired length. www.geocities.com /CapeCanaveral/Hall/3934/Pendulum.html   (1002 words)

 Math Forum: Geoboards - Scavo   (Site not responding. Last check: ) One calculates the length of an arbitrary line segment using the Pythagorean theorem, a concept whose understanding is a primary objective of this unit. Using the Pythagorean theorem, the length of line segment AB is found by calculating the square root of the sum of the squares of the lengths of the base and height of the triangle, that is, Thus the length of line segment AB is 5 units. mathforum.org /trscavo/geoboards/intro2.html   (364 words)

 String (Java 2 Platform SE v1.4.2) The length is equal to the number of 16-bit Unicode characters in the string. If it is greater than or equal to the length of this string, it has the same effect as if it were equal to one less than the length of this string: this entire string may be searched. a newly allocated character array whose length is the length of this string and whose contents are initialized to contain the character sequence represented by this string. java.sun.com /j2se/1.4.2/docs/api/java/lang/String.html   (4990 words)

 CLHS: Function LENGTH   (Site not responding. Last check: ) If sequence is a vector with a fill pointer, the active length as specified by the fill pointer is returned. (length "abc") => 3 (setq str (make-array '(3) :element-type 'character :initial-contents "abc" :fill-pointer t)) => "abc" (length str) => 3 (setf (fill-pointer str) 2) => 2 (length str) => 2 Should be prepared to signal an error of type type-error if sequence is not a proper sequence. www.lispworks.com /documentation/HyperSpec/Body/f_length.htm   (67 words)

 PGA.com :: PGA.com Technical Advisor Tom Wishon shows how to identify the club length that best fits your swing   (Site not responding. Last check: ) Today's average set of irons has a length based on a 5-iron of 38 inches for steel shafts and 38 1⁄2 inches if the irons are built with graphite shafts. Wrist-to-floor dimension is measured from the floor up to the major crease of the wrist at the base of the golfer's dominant hand, while the golfer stands comfortably erect, shoulders perfectly level, arms hanging relaxed at the sides, standing in flat soled shoes with a low heel height (photo 1). After the golfer's initial length is determined from the "wrist-to-floor" measurement, the clubmaker MUST look at the golfer's swing plane, swing path and tempo to determine if that initial length needs to be shortened. www.pga.com /improve/tips/equipment/improve_wishon080304.cfm   (1778 words)

 Calculus II (Math 2414) - Applications of Integrals - Arc Length   (Site not responding. Last check: ) In this section we are going to look at computing the arc length of a function.  Because it’s easy enough to derive the formulas that we’ll use in this section we will derive one of them and leave the other to you to derive. Before we work any examples we need to make a small change in notation.  Instead of having two formulas for the arc length of a function we are going to reduce it, in part, to a single formula. Thinking of the arc length formula as a single integral with different ways to define ds will be convenient when we run across arc lengths in future sections.  Also, this ds notation will be a nice notation for the next section as well. tutorial.math.lamar.edu /AllBrowsers/2414/ArcLength.asp   (1148 words)

 Relativistic Length Contraction   (Site not responding. Last check: ) One of the peculiar aspects of Einstein's theory of special relativity is that the length of objects moving at relativistic speeds undergo a contraction along the dimension of motion. The spaceship would be measured to be 200 feet in length when at rest relative to the observer. Note that the length contraction is only significant when the object is moving at relativistic speeds - i.e., speeds which are a significant fraction of the speed of light. www.glenbrook.k12.il.us /gbssci/phys/mmedia/specrel/lc.html   (363 words)

 length Length is a measurement of distance or dimension. The two main systems to measure length are the metric and the English system. The metric system is based on 10 as you can see in the table above. library.thinkquest.org /3804/length.html   (77 words)

 length Property (all, anchors, applets, ...) (Internet Explorer)   (Site not responding. Last check: ) length property returns the number of frames contained in a window. length property returns the number of characters in the object. Although this property is read-only for most of the objects listed in the Applies To section objects, it is read/write for the areas collection (image maps), the options collection (select boxes), and the select object. msdn.microsoft.com /workshop/author/dhtml/reference/properties/length.asp   (215 words)

 Scale length? - Project Guitar Forum   (Site not responding. Last check: ) The scale length is the average length of your *STRING* (not neck) from the nut to the saddle. Honestly the length from the nut to the end of the fretboard has no determination whatsoever on your scale length except for the fact that your bridge has to be longer than that. You can always measure the length from the nut to the 12th fret and double it to get the length of the string. projectguitar.ibforums.com /index.php?showtopic=667   (764 words)

 Scavenger Hunt for Lengths--Mathematics lesson plan (grades 6-8)--DiscoverySchool.com   (Site not responding. Last check: ) Possible strategies include estimating the length of part of the object and using this to estimate the whole length, comparing the length with a length they know, and estimating the shortest and the longest possible lengths and using these to estimate the range of the length. Context: Originally, a foot was the length of the king’s foot, but now it is a standard unit of length equal to 12 inches, or one-third of a yard. Context: The length of a hockey field is 100 yards, and its width is 60 yards. school.discovery.com /lessonplans/programs/lengths   (1685 words)

 Definition of length - Merriam-Webster Online Dictionary 1 a : the longer or longest dimension of an object b : a measured distance or dimension <10 feet in length> -- see 3 a : distance or extent in space b : the length of something taken as a unit of measure length> 4 : the degree to which something (as a course of action or a line of thought) is carried -- often used in plural lengths to learn the truth> www.m-w.com /cgi-bin/dictionary?book=Dictionary&va=length   (182 words)

 Java ArcLength Applet   (Site not responding. Last check: ) This curve is the graph of a polynomial of degree three or less. As the number of segments increases, the' length of the broken-line curve gets closer and closer to the arc length of the curve. is the length of the n-segment approximation and L is the length of the curve. xanadu.math.utah.edu /java/ApproxLength.html   (138 words)

 The LENGTH-WEIGHT Table   (Site not responding. Last check: ) The units of length and weight in FishBase are centimeter and gram, respectively. However, published length-weight relationships are sometimes difficult to use, as they may be based on a length measurement type (e.g., fork length) different from one’s length measurements (expressed e.g., as total length). We are currently exploring other ramifications of this graph, such as the factors determining the length and the slope of the line formed by the specific dots. www.fishbase.org /manual/FishbaseThe_LENGTH_WEIGHT_Table.htm   (931 words)

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