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An example, in English, of boustrophedon as used in inscriptions in ancient Greece (Lines 2 and 4 read right-to-left.) Boustrophedon (/ ˌ b uː s t r ə ˈ f iː d ən / [1]) is a style of writing in which alternate lines of writing are reversed, with letters also written in reverse, mirror-style.
In heraldry, right and left is always used in the meaning of proper right and proper left, as for the imaginary bearer of a coat of arms; to avoid confusion, the Latin terms dexter and sinister are often used. [5] The alternative is to use language that makes it clear that the viewer's perspective is being used.
The left hand is a non-superposable mirror image of the right hand; ... can be assigned a right or left ... thus meaning that the blood vessels which supply ...
A person's reflection in a mirror appears to be a real person facing them, but for that person to really face themselves (i.e.: twins) one would have to physically turn and face the other, causing an actual swapping of right and left. A mirror causes an illusion of left-right reversal because left and right were not swapped when the image ...
In the picture of the mountain reflected in the lake (photograph top right), the reversal normal to the reflecting surface is obvious. Notice that there is no obvious front-back or left-right of the mountain. In the example of the urn and mirror (photograph to right), the urn is fairly symmetrical front-back (and left-right).
The mirror-image forms are typically described as left-facing or left-hand (卍) and right-facing or right-hand (卐). The compact swastika can be seen as a chiral irregular icosagon (20-sided polygon ) with fourfold (90°) rotational symmetry .
The English word right is a cognate of rectus. This is the origin of the D/L and R/S notations, and the employment of prefixes levo-and dextro-in common names. The prefix ar-, from the Latin recto (right), is applied to the right-handed version; es-, from the Latin sinister (left), to the left-handed molecule.
Comparison of reflections of a pen in an ordinary mirror (left) and two perpendicular mirrors forming the first type of non-reversing mirror (right). The latter also illustrates the visible line in the middle if measures are not taken to minimise it. A non-reversing mirror can be made by connecting two regular mirrors at their edges at a 90 ...