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The crystallographic restriction theorem in its basic form was based on the observation that the rotational symmetries of a crystal are usually limited to 2-fold, 3-fold, 4-fold, and 6-fold. However, quasicrystals can occur with other diffraction pattern symmetries, such as 5-fold; these were not discovered until 1982 by Dan Shechtman .
Rotational symmetry of order n, also called n-fold rotational symmetry, or discrete rotational symmetry of the n th order, with respect to a particular point (in 2D) or axis (in 3D) means that rotation by an angle of (180°, 120°, 90°, 72°, 60°, 51 3 ⁄ 7 °, etc.) does not change the object. A "1-fold" symmetry is no symmetry (all ...
Jerusalem cross based on a cross potent (as commonly realised in early modern heraldry) The national flag of Georgia The Jerusalem cross (also known as "five-fold Cross", or "cross-and-crosslets") is a heraldic cross and Christian cross variant consisting of a large cross potent surrounded by four smaller Greek crosses, one in each quadrant, representing the Four Evangelists and the spread of ...
A high-index reflective subgroup is the prismatic octahedral symmetry, [4,3,2] (), order 96, subgroup index 4, (Du Val #44 (O/C 2;O/C 2) *, Conway ± 1 / 24 [O×O].2). The truncated cubic prism has this symmetry with Coxeter diagram and the cubic prism is a lower symmetry construction of the tesseract, as .
C i (equivalent to S 2) – inversion symmetry; C 2 – 2-fold rotational symmetry; C s (equivalent to C 1h and C 1v) – reflection symmetry, also called bilateral symmetry. Patterns on a cylindrical band illustrating the case n = 6 for each of the 7 infinite families of point groups. The symmetry group of each pattern is the indicated group.
In Judaism, bible hermeneutics notably uses midrash, a Jewish method of interpreting the Hebrew Bible and the rules which structure the Jewish laws. [1] The early allegorizing trait in the interpretation of the Hebrew Bible figures prominently in the massive oeuvre of a prominent Hellenized Jew of Alexandria, Philo Judaeus, whose allegorical reading of the Septuagint synthesized the ...
Matthew 5:42 is the forty-second verse of the fifth chapter of the Gospel of Matthew in the New Testament and is part of the Sermon on the Mount. This is the fifth and last verse of the antithesis on the command: "Eye for an eye".
The Fivefold Scapular, also known as Redemptorist Scapular, is a sacramental made up of five best-known of the early scapulars in the Catholic Church: the Brown Scapular of the Carmelites, the Blue Scapular of the Immaculate Conception, the Black Scapular of the Servites, the Red Scapular of the Passion, and the White Scapular of the Most Holy Trinity.