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The number 153 is the 17th triangular number, as well as the sum of the first five positive factorials, and is associated with the geometric shape known as the Vesica Piscis (literally, "bladder of a fish") or Mandorla, which Archimedes, in his Measurement of a Circle, referred to in the ratio 153/265 as constituting the "measure of the fish ...
The vesica piscis is the intersection of two congruent disks, each centered on the perimeter of the other. The vesica piscis is a type of lens, a mathematical shape formed by the intersection of two disks with the same radius, intersecting in such a way that the center of each disk lies on the perimeter of the other. [1]
The number 153 is associated with the geometric shape known as the Vesica piscis or Mandorla. Archimedes , in his Measurement of a Circle , referred to this ratio (153/265), as constituting the "measure of the fish", this ratio being an imperfect representation of 1 / 3 ≈ 0.57735 {\displaystyle 1/{\sqrt {3}}\approx 0.57735} .
The aureola, when enveloping the whole body, generally appears oval or elliptical in form, but occasionally depicted as circular, vesica piscis, or quatrefoil. When it appears merely as a luminous disk round the head, it is called specifically a halo or nimbus, while the combination of nimbus and aureole is called a glory.
Example of two asymmetric lenses (left and right) and one symmetric lens (in the middle) The Vesica piscis is the intersection of two disks with the same radius, R, and with the distance between centers also equal to R. If the two arcs of a lens have equal radius, it is called a symmetric lens, otherwise is an asymmetric lens.
It may be elliptical or depicted as a vesica, a lens shape as the intersection of two circles. Rhombic mandorlas are also sometimes depicted. In icons of the Eastern Orthodox Church , the mandorla is used to depict sacred moments that "transcend time and space", such as the Resurrection and the Transfiguration of Jesus Christ and the Dormition ...
Otherwise, there could be said to be an excess of words that could refer to either a head-disk or a full-body halo, and no word that clearly denotes a full-body halo that is not vesica piscis shaped. "Halo" by itself, according to recent dictionaries, [ 51 ] means only a circle around the head, although Rhie and Thurman use the word also for ...
12th-century seal of Stefan of Uppsala is enclosed in a vesica piscis. Seals in use outside the Church, such as this Knights Templar Seal, were circular.. Heraldry developed in medieval Europe from the late 11th century, originally as a system of personal badges of the warrior classes, which served, among other purposes, as identification on the battlefield.