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The latus rectum is defined similarly for the other two conics – the ellipse and the hyperbola. The latus rectum is the line drawn through a focus of a conic section parallel to the directrix and terminated both ways by the curve. For any case, is the radius of the osculating circle at the vertex.
Reversible poems, called hui-wen shih poems, were a Classical Chinese artform.The most famous poet using this style was the 4th-century poet Su Hui, who wrote an untitled poem now called "Star Gauge" (Chinese: 璇璣圖; pinyin: xuán jī tú). [1]
Ambidexterity is the ability to use both the right and left hand equally well. [1] [2] When referring to objects, the term indicates that the object is equally suitable for right-handed and left-handed people.
Historically, both scribal and typesetting traditions took advantage of abbreviations , ligatures, and swashes to help maintain the rhythm and colour of a justified line. Its use has only waned somewhat since the early 20th century through the advocacy of the typographer Jan Tschichold 's book Asymmetric Typography and the freer typographic ...
The meaning of palindrome in the context of genetics is slightly different, from the definition used for words and sentences. Since the DNA is formed by two paired strands of nucleotides , and the nucleotides always pair in the same way ( Adenine (A) with Thymine (T), Cytosine (C) with Guanine (G)), a (single-stranded) sequence of DNA is said ...
A strict definition of a triangle centre is a point whose trilinear coordinates are f(a,b,c) : f(b,c,a) : f(c,a,b) where f is a function of the lengths of the three sides of the triangle, a, b, c such that: f is homogeneous in a, b, c; i.e., f(ta,tb,tc)=t h f(a,b,c) for some real power h; thus the position of a centre is independent of scale.
The year 2024 will go down in history as the second-worst tornado season on record, beating 2011, NOAA's Storm Prediction Center's said Friday. After a late December tornado outbreak with at least ...
In astronomy, the barycenter (or barycentre; from Ancient Greek βαρύς (barús) 'heavy' and κέντρον (kéntron) 'center') [1] is the center of mass of two or more bodies that orbit one another and is the point about which the bodies orbit.