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Right-hand rule. In mathematics and physics, the right-hand rule is a convention and a mnemonic, utilized to define the orientation of axes in three-dimensional space and to determine the direction of the cross product of two vectors, as well as to establish the direction of the force on a current-carrying conductor in a magnetic field.
In mathematics, the cross product or vector product (occasionally directed area product, to emphasize its geometric significance) is a binary operation on two vectors in a three-dimensional oriented Euclidean vector space (named here ), and is denoted by the symbol . Given two linearly independent vectors a and b, the cross product, a × b ...
Fasces (/ ˈfæsiːz / FASS-eez, Latin: [ˈfaskeːs]; a plurale tantum, from the Latin word fascis, meaning 'bundle'; Italian: fascio littorio) is a bound bundle of wooden rods, often but not always including an axe (occasionally two axes) with its blade emerging. The fasces is an Italian symbol that had its origin in the Etruscan civilization ...
An ornamented golden Minoan double axe, often spuriously called a labrys Bronze Age axe from the tholos tombs of Messara in Crete Coinage of Idrieus of Caria, Obv: Head of Apollo, wearing laurel wreath, drapery at neck; Rev: legend ΙΔΡΙΕΩΣ ("IDRIEOS"), Zeus Labraundos standing with labrys in his right hand, c. 351–350 to 344–343 BCE [1]
The rule states that the camera should be kept on one side of an imaginary axis between two characters, so that the first character is always frame right of the second character. Moving the camera over the axis is called jumping the line or crossing the line ; breaking the 180-degree rule by shooting on all sides is known as shooting in the round .
Cartesian coordinate system with a circle of radius 2 centered at the origin marked in red. The equation of a circle is (x − a)2 + (y − b)2 = r2 where a and b are the coordinates of the center (a, b) and r is the radius. Cartesian coordinates are named for René Descartes, whose invention of them in the 17th century revolutionized ...
Hammer and Pick. The hammer and pick, rarely referred to as hammer and chisel, is a symbol of mining, often used in heraldry. It can indicate mining, mines (especially on maps or in cartography), or miners, and is also borne as a charge in the coats of arms of mining towns. The symbol represents the traditional tools of the miner, a hammer and ...
v. t. e. In mathematics, the complex plane is the plane formed by the complex numbers, with a Cartesian coordinate system such that the horizontal x -axis, called the real axis, is formed by the real numbers, and the vertical y -axis, called the imaginary axis, is formed by the imaginary numbers. The complex plane allows for a geometric ...