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The barycenter is one of the foci of the elliptical orbit of each body. This is an important concept in the fields of astronomy and astrophysics.In a simple two-body case, the distance from the center of the primary to the barycenter, r 1, is given by:
In biology and genetic genealogy, the most recent common ancestor (MRCA), also known as the last common ancestor (LCA), of a set of organisms is the most recent individual from which all the organisms of the set are descended. The term is also used in reference to the ancestry of groups of genes rather than organisms.
The common crane (Grus grus), also known as the Eurasian crane, is a bird of the family Gruidae, the cranes. A medium-sized species, it is the only crane commonly found in Europe besides the demoiselle crane ( Grus virgo ) and the Siberian crane ( Leucogeranus leucogeranus ) that only are regular in the far eastern part of the continent.
The difference () = () between the phases of two periodic signals and is called the phase difference or phase shift of relative to . [1] At values of t {\displaystyle t} when the difference is zero, the two signals are said to be in phase; otherwise, they are out of phase with each other.
The common myna or Indian myna (Acridotheres tristis), sometimes spelled mynah, [2] is a bird in the family Sturnidae, native to Asia.An omnivorous open woodland bird with a strong territorial instinct, the common myna has adapted extremely well to urban environments.
A common external tariff (CET) must be introduced when a group of countries forms a customs union.The same customs duties, import quotas, preferences or other non-tariff barriers to trade apply to all goods entering the area, regardless of which country within the area they are entering.
The letter symbols are common in countries using IEC standards, but North American practices rarely refer to the IEC symbols. The differences are that the conductors may be separate over their entire run from equipment to earth ground, or may be combined all or part of their length.