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Floating cube at ExxonMobil headquarters Sysco headquarters Hewlett Packard Enterprise headquarters Post Oak Tower in Uptown Houston, the headquarters for Landry's and Fertitta Entertainment Crown Castle headquarters KBR Tower, KBR's headquarters Academy Sports + Outdoors headquarters in Katy, Texas. This is a list of major companies or ...
Longitude by chronometer is a method, in navigation, of determining longitude using a marine chronometer, which was developed by John Harrison during the first half of the eighteenth century. It is an astronomical method of calculating the longitude at which a position line, drawn from a sight by sextant of any celestial body, crosses the ...
A Negus chronometer went with Robert Peary to the North Pole. Another was with Richard E. Byrd at the south Pole. [9] When John Mercer Brooke was on the North Pacific Exploring and Surveying Expedition in 1852, he said the best chronometer on the expedition proved to the one made by T. S. Negus and Company, which was purchased by the government ...
The Pioneer Instrument Company was started by Morris Maxey Titterington and Brice Herbert Goldsborough in Brooklyn, New York in 1919 using patents from the Lawrence Sperry Aircraft Corporation. [2] [3] Charles Herbert Colvin was the president. They specialized in aeronautical instruments including a bubble sextant and the Earth Inductor Compass.
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 ...
He navigated with the Thomas Mercer chronometer he carried under his jerkin. [5] [6] In 1916, while serving in Egypt, Frank received a telegram from the Admiralty stating that the best way he could serve his country was to return home immediately and industrialise British chronometer production, to avoid an imminent shortage.
American General Life Companies has offices in the America Tower. [14] American General Life Insurance Company is headquartered in the Life Building. [15] Ebro Foods North America Riviana & New World Pasta is in the Riviana Building. [16] [17] The Consulate-General of Norway in Houston was in Suite 1185 in the Riviana Building.
To find the position of a ship or aircraft by celestial navigation, the navigator measures with a sextant the apparent height of a celestial body above the horizon, and notes the time from a marine chronometer. That height is compared with the height predicted for a trial position; the arcminutes of height difference is how many nautical miles ...