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In digital imaging, a pixel (abbreviated px ), pel, [1] or picture element [2] is the smallest addressable element in a raster image, or the smallest addressable element in a dot matrix display device. In most digital display devices, pixels are the smallest element that can be manipulated through software. Each pixel is a sample of an original ...
Minicircles are small (~4 kb) circular replicons. They occur naturally in some eukaryotic organelle genomes. In the mitochondria -derived kinetoplast of trypanosomes, minicircles encode guide RNAs for RNA editing. [1] In Amphidinium, the chloroplast genome is made of minicircles that encode chloroplast proteins.
List of centroids. The following is a list of centroids of various two-dimensional and three-dimensional objects. The centroid of an object in - dimensional space is the intersection of all hyperplanes that divide into two parts of equal moment about the hyperplane. Informally, it is the "average" of all points of .
A circular sector, also known as circle sector or disk sector or simply a sector (symbol: ⌔ ), is the portion of a disk (a closed region bounded by a circle) enclosed by two radii and an arc, with the smaller area being known as the minor sector and the larger being the major sector. [1] In the diagram, θ is the central angle, the radius of ...
Circular segment. A circular segment (in green) is enclosed between a secant/chord (the dashed line) and the arc whose endpoints equal the chord's (the arc shown above the green area). In geometry, a circular segment or disk segment (symbol: ⌓) is a region of a disk [1] which is "cut off" from the rest of the disk by a straight line.
The circle is a highly symmetric shape: every line through the centre forms a line of reflection symmetry, and it has rotational symmetry around the centre for every angle. Its symmetry group is the orthogonal group O (2, R ). The group of rotations alone is the circle group T. All circles are similar.
Early Western travelers reported that the fortifications surrounding the ancient city was completely circular. [3] Hatra. 3rd or 2nd century BC. The plan is round, but it lacks "a genuine geometrical concept". [2] Gōr (old Firuzabad) 3rd century [dubious – discuss] The city plan was a perfect circle of 1,950 m diameter, divided into twenty ...
Circular arc. A circular sector is shaded in green. Its curved boundary of length L is a circular arc. A circular arc is the arc of a circle between a pair of distinct points. If the two points are not directly opposite each other, one of these arcs, the minor arc, subtends an angle at the center of the circle that is less than π radians (180 ...