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From approximately 1947–1992, the USGS produced the 7.5 minute series, with each map covering an area one-quarter of the older 15-minute quad series, which it replaced. [1] A 7.5 minute quadrangle map covers an area of 49 to 70 square miles (130 to 180 km 2 ). [ 2 ]
An image from a part of a digital orthophoto quadrangle of Washington, DC. A digital orthophoto quadrangle [1] (DOQ) is aerial photography or satellite imagery that has been corrected so that its pixels are aligned with longitude and latitude lines, and have a narrowly defined region of coverage.
A quad is a unit of energy equal to 10 15 (a short-scale quadrillion) BTU, [1] or 1.055 × 10 18 joule (1.055 exajoules or EJ) in SI units. The unit is used by the U.S. Department of Energy in discussing world and national energy budgets. The global primary energy production in 2022 was 637.8 quad, i.e., 672.9 EJ. [2]
A quad antenna is a type of directional wire radio antenna used on the HF and VHF bands. A quad is a Yagi–Uda antenna ("Yagi") made from loop elements instead of dipoles: It consists of a driven element and one or more parasitic elements; however in a quad, each of the loop elements may be square, round
The surveyor had three cameras; a high-resolution camera took black-and-white images (usually 1.5 to 12 m per pixel), and red and blue wide-angle cameras took images for context (240 m per pixel) and daily global images (7.5 kilometers (4.7 mi) per pixel). [68]
Normal is a town in McLean County, Illinois, United States.As of the 2020 census, the town's population was 52,736.Normal is the smaller of two principal cities of the Bloomington–Normal metropolitan area, and is Illinois' seventh most populous community outside the Chicago metropolitan area.
The earliest origin of the sport is debated. Though many Russians see their old countrymen as the creators of the sport – reflected by the unofficial title for bandy, "Russian hockey" (русский хоккей) – Russia, [9] England, Wales, and the Netherlands each had sports or pastimes, such as bando, which can be seen as forerunners of the present sport. [10]
Fabian Forte was born on February 6, 1943, in Philadelphia, Pennsylvania.Born to Italian-American parents, he is the son of Josephine and Dominic Forte. His father was a Philadelphia police officer. [2]