External links
- Borealaspis at the Paleobiology Database
 | This Phacopida-related article is a stub. You can help Wikipedia by expanding it. |
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| Genus: | Borealaspis |
Borealaspis is an extinct genus of Trilobite. It contains two species, B. biformis, and B. whittakerensis.
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The Northrop B-2 Spirit, also known as the Stealth Bomber, is an American heavy strategic bomber, featuring low-observable stealth technology designed to penetrate dense anti-aircraft defenses. A subsonic flying wing with a crew of two, the plane was designed by Northrop as the prime contractor, with Boeing, Hughes, and Vought as principal subcontractors, and was produced from 1987 to 2000. The bomber can drop conventional and thermonuclear weapons, such as up to eighty 500-pound class (230 kg) Mk 82 JDAM GPS-guided bombs, or sixteen 2,400-pound (1,100 kg) B83 nuclear bombs. The B-2 is the only acknowledged in-service aircraft that can carry large air-to-surface standoff weapons in a stealth configuration.
The Rockwell B-1 Lancer is a supersonic variable-sweep wing, heavy bomber used by the United States Air Force. It has been nicknamed the "Bone". As of 2024, it is one of the United States Air Force's three strategic bombers, along with the B-2 Spirit and the B-52 Stratofortress. Its 75,000-pound (34,000 kg) payload is the heaviest of any U.S. bomber.
The Boeing B-17 Flying Fortress is an American four-engined heavy bomber aircraft developed in the 1930s for the United States Army Air Corps (USAAC). A fast and high-flying bomber, the B-17 was used primarily in the European Theater of Operations and dropped more bombs than any other aircraft during World War II. It is the third-most produced bomber of all time, behind the American four-engined Consolidated B-24 Liberator and the German multirole, twin-engined Junkers Ju 88. The B-17 was also employed in transport, anti-submarine warfare, and search and rescue roles.
November 11 is the 315th day of the year in the Gregorian calendar; 50 days remain until the end of the year.
November 12 is the 316th day of the year in the Gregorian calendar; 49 days remain until the end of the year.
November 16 is the 320th day of the year in the Gregorian calendar; 45 days remain until the end of the year.
November 10 is the 314th day of the year in the Gregorian calendar; 51 days remain until the end of the year.
November 13 is the 317th day of the year in the Gregorian calendar; 48 days remain until the end of the year.
November 14 is the 318th day of the year in the Gregorian calendar; 47 days remain until the end of the year.
November 15 is the 319th day of the year in the Gregorian calendar; 46 days remain until the end of the year.
Quantum mechanics is a fundamental theory that describes the behavior of nature at and below the scale of atoms. It is the foundation of all quantum physics, which includes quantum chemistry, quantum field theory, quantum technology, and quantum information science.
Rhythm and blues, frequently abbreviated as R&B or R'n'B, is a genre of popular music that originated within the African-American community in the 1940s. The term was originally used by record companies to describe recordings marketed predominantly to African Americans, at a time when "rocking, jazz based music ... [with a] heavy, insistent beat" was becoming more popular. In the commercial rhythm and blues music typical of the 1950s through the 1970s, the bands usually consisted of a piano, one or two guitars, bass, drums, one or more saxophones, and sometimes background vocalists. R&B lyrical themes often encapsulate the African-American history and experience of pain and the quest for freedom and joy, as well as triumphs and failures in terms of societal racism, oppression, relationships, economics, and aspirations.
The Boeing B-29 Superfortress is an American four-engined propeller-driven heavy bomber, designed by Boeing and flown primarily by the United States during World War II and the Korean War. Named in allusion to its predecessor, the B-17 Flying Fortress, the Superfortress was designed for high-altitude strategic bombing, but also excelled in low-altitude night incendiary bombing, and in dropping naval mines to blockade Japan. B-29s dropped the atomic bombs on Hiroshima and Nagasaki, the only aircraft ever to drop nuclear weapons in combat.
The A-side and B-side are the two sides of phonograph records and cassettes, and the terms have often been printed on the labels of two-sided music recordings. The A-side usually features a recording that its artist, producer, or record company intends to be the initial focus of promotional efforts and radio airplay, with the aim of it becoming a hit record. The B-side is a secondary recording that typically receives less attention, although some B-sides have been as successful as, or more so than, their A-sides.
Melanie Janine Brown, commonly known as Mel B or Melanie B, is an English singer, songwriter, television personality, and actress. She rose to fame in the mid 1990s as a member of the pop group the Spice Girls, in which she was nicknamed Scary Spice. With over 100 million records sold worldwide, the Spice Girls are the best-selling female group of all time. The group went on an indefinite hiatus in 2000, before reuniting for a greatest hits album (2007) and two concert tours: the Return of the Spice Girls (2007–2008) and Spice World (2019).
Christopher Maurice Brown is an American singer, songwriter, dancer, and actor. He is a contemporary R&B musician, who has often been referred to by his contemporaries as the "King of R&B". While an R&B singer and songwriter, his music has also been influenced by hip hop and pop genres. His lyrics often address emotional and hedonistic themes. His singing and dancing skills have often been compared favorably to those of pop icon Michael Jackson.
Cheiruridae is a family of phacopid trilobites of the suborder Cheirurina. Its members, as with other members of the suborder, had distinctive pygidial modified into finger-like spines. They first appeared in the uppermost Cambrian, and persisted until the end of the Middle Devonian (Givetian). Currently about 657 species assigned to 99 genera are included.
The Boeing B-52 Stratofortress is an American long-range, subsonic, jet-powered strategic bomber. The B-52 was designed and built by Boeing, which has continued to provide support and upgrades. It has been operated by the United States Air Force (USAF) since the 1950s, and NASA for nearly 50 years. The bomber can carry up to 70,000 pounds (32,000 kg) of weapons and has a typical combat range of around 8,800 miles (14,200 km) without aerial refueling.
In mathematics, the Pythagorean theorem or Pythagoras' theorem is a fundamental relation in Euclidean geometry between the three sides of a right triangle. It states that the area of the square whose side is the hypotenuse is equal to the sum of the areas of the squares on the other two sides.
Belcalis Marlenis Cephus, known professionally as Cardi B, is an American rapper. Known for her unfiltered public image and lyrics, Cardi B is one of the most successful female artists in contemporary music. From 2015 to early 2017, she gained recognition on Vine and Instagram, as a cast member on VH1's Love & Hip Hop: New York, and by releasing two mixtapes.