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All articles starting with B

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Boredom

Boredom is an aversive emotional state of wanting but being unable to engage in satisfying activities, distinct from apathy, anhedonia, and depression; tied to attention and meaning, measured by scales such as the Boredom Proneness Scale, and linked to depression, anger, and risk behaviors.

Boreham Wood F.C.

Boreham Wood F.C., formed 1948 in Borehamwood, Hertfordshire, is a National League non-league club playing at Meadow Park, shared with Arsenal Women and youth teams; twice Wembley play-off finalists (2018, 2026) and 2022 FA Cup fifth-roundists.

Borehamwood

Borehamwood, Hertfordshire town in Hertsmere borough, England; home of Elstree Studios since 1914 and called the British Hollywood; 36,324 residents (2021), major town centre regeneration and Sky Studios expansion underway.

Borehole

A borehole, also called a wellbore or drill hole, is a narrow shaft drilled into the ground to investigate or exploit the subsurface, using a drill rig rather than digging.

Borehole imaging

Borehole imaging is a well-logging technique in which downhole sensors produce oriented, high-resolution images of the borehole wall, using optical, acoustic, or electrical measurements to map fractures, bedding, and rock structures.

Borehole thermal energy storage

Borehole thermal energy storage (BTES) stores heat or cold in soil or rock via closed-loop pipes in borehole arrays, allowing heat collected in one season to be used in another.

Borei-class submarine

The Borei class, also called the Yuriy Dolgorukiy class, is a series of nuclear-powered Russian ballistic missile submarines built for the Russian Navy, each armed with 16 Bulava SLBMs.

Börek

Börek (burek, byrek) is a family of filled yufka or phyllo pastries from the Ottoman culinary sphere, with cheese, meat, or spinach fillings; regional names and shapes differ across Turkey, the Balkans, and beyond.

Borel determinacy theorem

The Borel determinacy theorem, or Borel determinacy, states that every infinite two-player game whose Borel payoff set gives one player a winning strategy, proved by Donald A. Martin in 1975.

Borel measure

A Borel measure is a measure defined on the Borel σ-algebra of a topological space, the smallest σ-algebra containing every open set; it underlies probability and integration.

Borel set

A Borel set, or Borel subset, is a subset of a topological space belonging to the Borel σ-algebra, the smallest σ-algebra containing every open set.

Borel subalgebra

A Borel subalgebra of a Lie algebra is a maximal solvable subalgebra, named for Armand Borel. It organizes the structure and representation theory of semisimple Lie algebras.

Borel summation

Borel summation is a summation method introduced by Émile Borel in 1899 that assigns finite values to divergent series, notably factorially divergent asymptotic series in perturbative physics.

Borel–Cantelli lemma

The Borel–Cantelli lemma is a result in probability theory, introduced by Émile Borel in 1909, that determines whether infinitely many events in a sequence occur.

Boreoeutheria

Boreoeutheria is the placental mammal clade uniting Laurasiatheria and Euarchontoglires, sister to Atlantogenata (Afrotheria + Xenarthra), of Laurasian origin, diverging about 99-100 million years ago.

Boreogadus saida

Boreogadus saida, the Arctic cod or polar cod (Russian сайка), is a small gadid fish, the sole species of Boreogadus, circumpolar in ice-covered Arctic seas, the Arctic Ocean's most abundant forage fish and a keystone prey for seals, seabirds, and cod.

Boreotrophon

Boreotrophon (P. Fischer, 1884) is a genus of predatory muricid sea snails in the subfamily Pagodulinae, cold northern seas, species like B. clathratus and B. candelabrum, many former species moved to other genera.

Borescope

A borescope is an optical inspection instrument, a tube with a lens at one end and an eyepiece or camera at the other, used to examine inaccessible cavities like engine cylinders and turbine interiors.

Borexino

Borexino was an underground particle physics experiment at Italy's Gran Sasso laboratory that measured low-energy solar neutrinos in real time with ultrapure liquid scintillator, operating from 2007 to 2021.

Borg

The Borg are Star Trek's cybernetic hive-mind villains, introduced in TNG's "Q Who" (1989) by writer Maurice Hurley. They assimilate species as drones via nanoprobes, attacked Earth in First Contact (2063 incursion), and return in Picard season 3.

Borġ l-Imramma

Borġ l-Imramma, also written Borġ tal-Imramma, is a megalithic temple-period ruin on the Ta' Ċenċ plateau near Sannat in southeast Gozo, Malta, dating to about 4100–3000 BC and never excavated.

Borg Roman villa

Borg Roman villa (Römische Villa Borg), a large 7.5-hectare Roman villa rustica near Perl, Saarland, Germany; excavated since 1986 and reconstructed on its foundations as an archaeological park showing the 2nd–3rd century AD estate.

Borg vs McEnroe

Borg vs McEnroe: the 1978-1981 tennis rivalry between Björn Borg and John McEnroe, 14 matches split 7-7, defined by the 1980 Wimbledon final's 18-16 tiebreak and the 1981 changing of the guard.

Borg–McEnroe rivalry

Borg–McEnroe rivalry: 14 matches between Björn Borg and John McEnroe, 1978–1981, tied 7–7, defined by the 1980 Wimbledon final and its 18–16 fourth-set tiebreak.

Børge G. Nordestgaard

Børge G. Nordestgaard is a Danish clinical biochemist and cardiovascular researcher at the University of Copenhagen who studies remnant cholesterol and founded the Copenhagen General Population Study in 2003.

Børge Jessen

Børge Jessen (1907–1993) was a Danish mathematician and professor at the University of Copenhagen from 1942 to 1977, known for Jessen's theorem and the Jessen orthogonal icosahedron.

Borgeet

Borgeet (বৰগীত, "great songs") are Assamese devotional songs composed by Srimanta Sankardeva and Madhavdeva, set to classical ragas and talas and sung in praise of Krishna in Assam's Vaishnavite satras.

Borgen (TV series)

Borgen is a Danish political drama created by Adam Price for DR1 (2010–2013; 2022 revival Power & Glory), following fictional first female PM Birgitte Nyborg (Sidse Babett Knudsen) at Christiansborg, the 'Castle'. Distinguished by realistic coalition politics, 1.5 million Danish viewers, and BAFTA, Emmy, and Peabody awards.

Börgen Bay

Börgen Bay, also Bahía Börgen, is a bay on the southeast coast of Anvers Island, Palmer Archipelago, Antarctica, charted by the Belgian Antarctic Expedition in 1898 and named for German astronomer Carl Börgen; site of the retreating William Glacier.

Borges

Borges, full name Luis Felipe Borges Campos, is a Brazilian trap and rap artist from Pavuna, Rio de Janeiro, revealed nationally in 2019 with "Ak do Flamengo".