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According to the section of tension correction some tapes are calibrated for sag at standard tension. These tapes will require complex sag and tension corrections if used at non-standard tensions. The correction due to sag must be calculated separately for each unsupported stretch separately and is given by:
In optics and especially telescope making, sagitta or sag is a measure of the glass removed to yield an optical curve. It is approximated by the formula It is approximated by the formula S ( r ) ≈ r 2 2 × R {\displaystyle S(r)\approx {\frac {r^{2}}{2\times R}}} ,
In geometry, the sagitta (sometimes abbreviated as sag [1]) of a circular arc is the distance from the midpoint of the arc to the midpoint of its chord. [2] It is used extensively in architecture when calculating the arc necessary to span a certain height and distance and also in optics where it is used to find the depth of a spherical mirror ...
Therefore, sagging can reduce her effective cargo capacity – especially if her loadline has already been reached prematurely due to the sag. [5] This is taken into account when calculating cargo, by applying what is called a "3/4 mean draft". This method is also called the "two-thirds mean correction", directly derived from Simpson's first rule.
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A Snellen chart or other eye chart may initially reveal reduced visual acuity. A keratometer may be used to measure the curvature of the steepest and flattest meridians in the cornea's front surface. [14] Corneal topography may also be used to obtain a more accurate representation of the cornea's shape. [15]
From June 2009 to December 2012, if you bought shares in companies when Alfred F. Kelly, Jr. joined the board, and sold them when he left, you would have a 12.1 percent return on your investment, compared to a 59.3 percent return from the S&P 500.
Minimum sag occurs when the centre of the rod sags the same amount as the end points, which is not quite the same thing as minimum horizontal motion of the ends. The nodes of free vibration, 0.5516 times the length. The points for zero central sag (any closer and the beam rises between the support points): 0.5228 times the length.