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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 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 ...
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).
Weems was born in Tennessee, the son of Joseph Burch and May Elizabeth Rye Weems. [2] When he was a child, he and his six brothers and one sister were orphaned.
The list below includes the poems in the US version of the collection, published by Heinemann in 1960. [1] This omits several poems from the first UK edition, published by Faber & Faber in 1967, [2] including five of the seven sections of "Poem for a Birthday", only two of which ("Flute Notes from a Reedy Pond" and "The Stones") are included in the US edition.
Ethan Plath and Olivia Plath have split after five years of marriage. “Ethan and I have decided to go our separate ways,” Olivia, 25, wrote in an Instagram statement on Friday, October 27.
Welcome to Plathville’s Ethan and Olivia Plath’s Relationship Ups and Downs. Read article. The reality star, 25, detailed her “2023 summer resolves” in a June 4 Instagram post.In addition ...
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]
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