Information: - Mullard Radio Astronomy Observatory (MRAO) is home to a number of large aperture synthesis radio telescopes, including the One-Mile Telescope, 5-km Ryle Telescope, and the Arcminute Microkelvin Imager. - The Fourth Cambridge Survey ( 4C ) is an astronomical catalogue of celestial radio sources as measured at 178 MHz using the 4C Array . It was published in two parts , in 1965 ( for declinations +20 to +40 ) and 1967 ( declinations -7 to + 20 and +40 to +80 ) , by the Radio Astronomy Group of the University of Cambridge . References to entries in this catalogue use the prefix 4C followed by the declination in degrees , followed by a period , and then followed by the source number on that declination strip , e.g. 4C - 06.23 . The 4C Array , which used the technique of aperture synthesis , could reliably position sources with flux densities of around 2 Jy , to within about 0.35 arcmin in Right ascension and 2.5 arcmin in declination . - The Equator usually refers to an imaginary line on the Earth's surface equidistant from the North Pole and South Pole, dividing the Earth into the Northern Hemisphere and Southern Hemisphere. The Equator is about long; some 78.7% lies across water and 21.3% over land. - The 4C Array is a cylindrical paraboloid radio telescope at the Mullard Radio Astronomy Observatory, near Cambridge, England. It is similar in design to the Molonglo Observatory Synthesis Telescope. It is 450 m long, 20 m wide, with a second, moveable element (now mostly removed; some of it is still visible, beyond COAST). The first large aperture synthesis telescope (1958), it was also the first new instrument to be built at Lord's Bridge, after the Observatory was moved there in 1957, and needed of reflector wire (since removed). The 4C operated at 178MHz (1.7 m), and located nearly 5000 sources of the 4C (4th Cambridge) catalogue published in 1965 and 1966, which helped establish the evolution of the radio galaxy population of the universe. The telescope is now inoperable. - In astronomy and celestial navigation, the hour angle is one of the coordinates used in the equatorial coordinate system to give the direction of a point on the celestial sphere. The hour angle of a point is the angle between two planes: one containing the Earth's axis and the zenith (the meridian plane), and the other containing the Earth's axis and the given point (the hour circle passing through the point). - In astronomy, declination (abbreviated dec; symbol ) is one of the two angles that locate a point on the celestial sphere in the equatorial coordinate system, the other being hour angle. Declination's angle is measured north or south of the celestial equator, along the hour circle passing through the point in question. - In astronomy, the hour circle of a celestial object is the great circle through the object and the celestial poles. It is perpendicular to the celestial equator. The declination of an object as observed on the celestial sphere is the angle measured along the hour circle of that object to the celestial equator. In other words, it is analogous to meridians or longitudes on a globe. A meridian on the celestial sphere matches an hour circle at any time. So called because the angle between the planes of the hour circles (or the difference in longitudes) of two objects is sometimes measured in hours (or hours, minutes, and seconds), one revolution (360) being equivalent to 24 hours, or 1 hour being equivalent to 15. What object entity has the relation of 'operator' with the subject 'fourth cambridge survey'? Choices: - meridian - mullard radio astronomy observatory - southern
mullard radio astronomy observatory
(Q).
Information: - An epigram is a brief, interesting, memorable, and sometimes surprising or satirical statement. Derived from the "epigramma" "inscription" from "epigraphein" "to write on, to inscribe", this literary device has been employed for over two millennia. - Philippus of Thessalonica ( Greek : ) ( 1st century ) or Philippus Epigrammaticus was the compiler of an Anthology of Epigrammatists subsequent to Meleager of Gadara and is himself the author of 72 epigrams in the Greek Anthology . Philippus has one word which describes the epigram by a single quality ; he calls his work an oligostikhia or collection of poems not exceeding a few lines in length . Philippus ' own epigrams , of which over seventy are extant , are generally rather dull , chiefly school exercises , and , in the phrase of Jacobs , imitatione magis quam inventione conspicua ( more like imitation than striking innovation ) . But we owe to him the preservation of a large mass of work belonging to the Roman period . His collection of epigrams was called Garland of Philippus , copying the name of ( '' recently '' published at the time - in the same century ) Garland of Meleagros . - Meleager of Gadara (1st century BCE) was a poet and collector of epigrams. He wrote some satirical prose, now lost, and he wrote some sensual poetry, of which 134 epigrams survive. He also compiled numerous epigrams from diverse poets in an anthology known as the "Garland", and although this does not survive, it is the original basis for the "Greek Anthology". What object entity has the relation of 'occupation' with the subject 'philippus of thessalonica'? Choices: - literary - poet
(A).
poet