Quadrant may refer to:
Quadrant may refer to:
A sextant is a doubly reflecting navigation instrument that measures the angular distance between two visible objects. The primary use of a sextant is to measure the angle between an astronomical object and the horizon for the purposes of celestial navigation.
Swansea is a coastal city and the second-largest city of Wales. It forms a principal area, officially known as the City and County of Swansea.
Arc may refer to:
Norton may refer to:
The Roman triumph was a celebration for a victorious military commander in ancient Rome. For later imitations, in life or in art, see Trionfo. Numerous later uses of the term, up to the present, are derived directly or indirectly from the Roman one.
Edmund Gunter, was an English clergyman, mathematician, geometer and astronomer of Welsh descent. He is best remembered for his mathematical contributions, which include the invention of the Gunter's chain, the Gunter's quadrant, and the Gunter's scale. In 1620, he invented the first successful analogue device which he developed to calculate logarithmic tangents.
A circular sector, also known as circle sector or disk sector or simply a sector, is the portion of a disk enclosed by two radii and an arc, with the smaller area being known as the minor sector and the larger being the major sector. In the diagram, θ is the central angle, r the radius of the circle, and L is the arc length of the minor sector.
Smiths Group plc is a British, multinational, diversified engineering business headquartered in London, England. It operates in over 50 countries and employs 15,000 staff. Smiths Group is listed on the London Stock Exchange and is a constituent of the FTSE 100 Index.
Waunarlwydd is a village and community in Swansea, Wales, within the newly formed Waunarlwydd ward in 2021. Waunarlwydd became a community in 2022. New rugby club due late 2024
The octant, also called a reflecting quadrant, is a reflecting instrument used in navigation.
Swansea city centre in Swansea, Wales, contains the main shopping, leisure and nightlife district in Swansea. The city centre covers much of the Castle ward including the area around Oxford Street, Castle Square, and the Quadrant Shopping Centre; Alexandra Road, High Street, Wind Street and the Castle; Parc Tawe; and the Maritime Quarter extending down to the seafront.
In geometry, a quadratrix is a curve having ordinates which are a measure of the area of another curve. The two most famous curves of this class are those of Dinostratus and E. W. Tschirnhaus, which are both related to the circle.
Beta is the second letter of the Greek alphabet.
Sextant may refer to:
The sector, also known as a sector rule, proportional compass, or military compass, was a major calculating instrument in use from the end of the sixteenth century until the nineteenth century. It is an instrument consisting of two rulers of equal length joined by a hinge. A number of scales are inscribed upon the instrument which facilitate various mathematical calculations. It was used for solving problems in proportion, multiplication and division, geometry, and trigonometry, and for computing various mathematical functions, such as square roots and cube roots. Its several scales permitted easy and direct solutions of problems in gunnery, surveying and navigation. The sector derives its name from the fourth proposition of the sixth book of Euclid, where it is demonstrated that similar triangles have their like sides proportional. Some sectors also incorporated a quadrant, and sometimes a clamp at the end of one leg which allowed the device to be used as a gunner's quadrant.
The City and County of Swansea is an urban centre with a largely rural hinterland in Gower; the city has been described as the regional centre for South West Wales. Swansea's travel to work area, not coterminous with the local authority, also contained the Swansea Valley in 1991; the new 2001-based version merges the Swansea, Neath & Port Talbot, and Llanelli areas into a new Swansea Bay travel to work area. Formerly an industrial centre, most employment in the city is now in the service sector.
A dividing engine is a device employed to mark graduations on measuring instruments.
Reflecting instruments are those that use mirrors to enhance their ability to make measurements. In particular, the use of mirrors permits one to observe two objects simultaneously while measuring the angular distance between the objects. While reflecting instruments are used in many professions, they are primarily associated with celestial navigation as the need to solve navigation problems, in particular the problem of the longitude, was the primary motivation in their development.
Nonius is a measuring tool used in navigation and astronomy named in honour of its inventor, Pedro Nunes, a Portuguese author, mathematician and navigator. The nonius was created in 1542 as a system for taking finer measurements on circular instruments such as the astrolabe. The system was eventually adapted into the Vernier scale in 1631 by the French mathematician Pierre Vernier.
An arrow is a projectile launched from a bow.