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The frame of a sextant is in the shape of a sector which is approximately 1 ⁄ 6 of a circle (60°), [2] hence its name (sextāns, sextantis is the Latin word for "one sixth"). "). Both smaller and larger instruments are (or were) in use: the octant, quintant (or pentant) and the (doubly reflecting) quadrant [3] span sectors of approximately 1 ⁄ 8 of a circle (45°), 1 ⁄ 5 of a circle (72 ...
The first known mural sextant was constructed in Ray, Iran, by Abu-Mahmud al-Khujandi in 994. [1] To measure the obliquity of the ecliptic, al-Khujandī invented a device that he called al-Fakhri sextant (al-suds al Fakhrī), a reference to his patron, Buwayhid ruler, Fakhr al Dawla (976–997).
Plath's professor Alfred Young Fisher drew a parallel between the poem and James Joyce's Ulysses. In a manuscript held in the Sylvia Plath Collection at Smith College , his margin notes appear to compare the poem's last line "And that is that, is that, is that" with Joyce's repetition in the line "showed me her next year in drawers return next ...
A diagram of a typical nautical sextant, a tool used in celestial navigation to measure the angle between two objects viewed by means of its optical sight. Celestial navigation, also known as astronavigation, is the practice of position fixing using stars and other celestial bodies that enables a navigator to accurately determine their actual current physical position in space or on the ...
John Bird (1709– 31 March 1776) was a British mathematical instrument maker who was notable for inventing the sextant. [citation needed] He came to London in 1740 where he worked for Jonathan Sisson and George Graham. [1] By 1745, he had his own business in the Strand.
The Bris sextant / ˈ b r iː s /, or Bris Mini-Sextant, is not a sextant proper, but is a small angle-measuring device that can be used for navigation. [ 1 ] [ 2 ] The Bris is, however, a true reflecting instrument which derives its high accuracy from the same principle of double reflection which is fundamental to the octant, the true sextant ...
Spencer, Browning & Rust quintant sextant or lattice sextant at the United States Geological Survey Museum. One of the oldest items in the collection of the United States Geological Survey Museum is a quintant sextant or lattice sextant (pictured) that was manufactured by Spencer, Browning & Rust. The sextant dates from the 1820s to 1850s. [9]
The Bell Jar is the only novel written by the American writer and poet Sylvia Plath.Originally published under the pseudonym "Victoria Lucas" in 1963, the novel is supposedly semi-autobiographical with the names of places and people changed.