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2. Sagitta (geometry) - Wikipedia

   en.wikipedia.org/wiki/Sagitta_(geometry)

   In the following equations, denotes the sagitta (the depth or height of the arc), equals the radius of the circle, and the length of the chord spanning the base of the arc. As 1 2 l {\displaystyle {\tfrac {1}{2}}l} and r − s {\displaystyle r-s} are two sides of a right triangle with r {\displaystyle r} as the hypotenuse , the Pythagorean ...

3. Four-dimensional space - Wikipedia

   en.wikipedia.org/wiki/Four-dimensional_space

   Four-dimensional space (4D) is the mathematical extension of the concept of three-dimensional space (3D). Three-dimensional space is the simplest possible abstraction of the observation that one needs only three numbers, called dimensions, to describe the sizes or locations of objects in the everyday world.

4. Equivalent width - Wikipedia

   en.wikipedia.org/wiki/Equivalent_width

   The equivalent width of a spectral line is a measure of the area of the line on a plot of intensity versus wavelength in relation to underlying continuum level. It is found by forming a rectangle with a height equal to that of continuum emission, and finding the width such that the area of the rectangle is equal to the area in the spectral line.

5. Length - Wikipedia

   en.wikipedia.org/wiki/Length

   Various terms for the length of a fixed object are used, and these include height, which is vertical length or vertical extent, width, breadth, and depth. Height is used when there is a base from which vertical measurements can be taken. Width and breadth usually refer to a shorter dimension than length. Depth is used for the measure of a third ...

6. Drainage equation - Wikipedia

   en.wikipedia.org/wiki/Drainage_equation

   the permissible long term average depth of the water table (Dw) on the basis of agricultural drainage criteria; the soil's hydraulic conductivity (Ka and Kb) by measurements; the depth of the bottom of the aquifer (Di) the design drain spacing (L) can be found from the equation in dependence of the drain depth (Dd) and drain radius (r ...

7. Aspect ratio - Wikipedia

   en.wikipedia.org/wiki/Aspect_ratio

   For example, the aspect ratio of a rectangle is the ratio of its longer side to its shorter side—the ratio of width to height, [1] [2] when the rectangle is oriented as a "landscape". The aspect ratio is most often expressed as two integer numbers separated by a colon (x:y), less commonly as a simple or decimal fraction. The values x and y do ...

8. What Are Your Chances Of Having A White Christmas? Here Are ...

   www.aol.com/chances-having-white-christmas-odds...

   The greatest Christmas snow depth in Memphis (10 inches) happened in 1963, while Tulsa's record is 6 inches in 2009. In 2020, a white Christmas was observed in Knoxville, Tennessee, (2 inches) and ...

9. Three-dimensional space - Wikipedia

   en.wikipedia.org/wiki/Three-dimensional_space

   They are usually labeled x, y, and z. Relative to these axes, the position of any point in three-dimensional space is given by an ordered triple of real numbers, each number giving the distance of that point from the origin measured along the given axis, which is equal to the distance of that point from the plane determined by the other two axes.