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The 2003 Dragnet series used the L.A. City Hall building aerial shot and badge throughout its introduction. War of the Worlds: The City Hall was destroyed (albeit by miniature) in the 1953 film version (although the H. G. Wells book has the aliens attacking London, the setting was changed to Los Angeles for the film).
A chiral phenomenon is one that is not identical to its mirror image (see the article on mathematical chirality). The spin of a particle may be used to define a handedness , or helicity, for that particle, which, in the case of a massless particle, is the same as chirality.
A chiral molecule is a type of molecule that has a non-superposable mirror image. The feature that is most often the cause of chirality in molecules is the presence of an asymmetric carbon atom. [16] [17] The term "chiral" in general is used to describe the object that is non-superposable on its mirror image. [18]
A chirality center (chiral center) is a type of stereocenter. A chirality center is defined as an atom holding a set of four different ligands (atoms or groups of atoms) in a spatial arrangement which is non-superposable on its mirror image. Chirality centers must be sp 3 hybridized, meaning that a chirality center can only have single bonds. [5]
The Civic Center is located in the northern part of Downtown Los Angeles, bordering Bunker Hill, Little Tokyo, Chinatown, and the Historic Core of the old Downtown. . Depending on various district definitions, either the Civic Center or Bunker Hill also contains the Music Center and adjacent Walt Disney Concert Hall; some maps, for example, place the Dorothy Chandler Pavilion in the Civic ...
Suggest changing to one or emphasizing the difference (quick google poll would indicate chiral center is more common than chirality center). — Preceding unsigned comment added by Zzzzort (talk • contribs) 22:38, 31 January 2011 (UTC) The flash animation was horrible. The terms "chiral center" and "chirality centre" are the same.
Many chiral molecules have point chirality, namely a single chiral stereogenic center that coincides with an atom. This stereogenic center usually has four or more bonds to different groups, and may be carbon (as in many biological molecules), phosphorus (as in many organophosphates), silicon, or a metal (as in many chiral coordination compounds).
2D chirality is associated with directionally asymmetric transmission (reflection and absorption) of circularly polarized electromagnetic waves. 2D-chiral materials, which are also anisotropic and lossy exhibit different total transmission (reflection and absorption) levels for the same circularly polarized wave incident on their front and back.