dyad
set or group of two entities
Friis formulas for noise
either of two formulas used in telecommunications engineering
Cooper pair
pair of electrons or other fermions bound together at low temperature allowing for superconductivity
bigram
special case of the n-gram, where n is 2
couplet
pair of lines of metre in poetry; two line stanza making complete sense
duality
unity of two often opposite but complementary concepts, qualities, aspects or other entities
Bears Ears
pair of buttes in the Bears Ears National Monument in San Juan County, Utah, United States
atomic bombings of Hiroshima and Nagasaki
1945 use of nuclear weapons against Japan in World War II
dimer
oligomer consisting of two structurally similar monomers joined by bonds that can be either strong or weak, covalent or intermolecular
pendant
word describing one of two artworks conceived as a pair
drawer slides
pair of linear bearings to allow a drawer to slide in and out
supplementary angles
two angles which sum up to 180 degrees (or π radians)
lever
pair of opposite-color pawns situated diagonally
currency pair
term
Checkers and Rally's
American fast food company
push and pull factors
objective and subjective conditions that push an individual or a human group to migrate
connector gender
designation differentiating two dissimilar connectors which together form a physical connexion
vertical angles
two of four angles formed by two intersecting lines whose sides are different from one another
adjacent angles
two angles that share a common ray
The Offerings of Peace and The Offerings of War
pair of equestian statues at AGNSW
electron pair
two electrons that occupy the same orbital but have opposite spins
alpine skiing combined
event in alpine ski racing
Hillel and Shammai
schools of thought in ancient Judaism
Lucky and Flo
detection dogs
Earth-Moon system
Moon orbiting Earth
peak-to-peak amplitude
change between peak (highest amplitude value) and trough (lowest amplitude value, which can be negative)
binomial
polynomial with two terms
complementary angles
two angles which sum up to 90 degrees (or π/2 radians)
type I and type II errors
concepts from statistical hypothesis testing
ground and neutral
in electrical mains wiring, a pair of conductors connected to earth but with different purposes
hendiadys
conjunction for emphasis
unordered pair
set having two elements a and b with no particular relation between them
binary name
botanical term
Supreme Court of Singapore
body consisting of the two highest courts in Singapore
Due Process Clause
clauses in the 5th and 14th Amendments to the U.S. Constitution
Dyad
set of two notes or pitches, that may imply a chord
anime and manga
a portmanteau of animation and comics made in Japan
Stations of Ueno Zoo Monorail
railway station in Japan
Australia and New Zealand
geographic region in Oceania
dualism
philosophical or religious belief in two fundamental substances or principles, which often oppose each other
inverse hyperbolic secant and inverse hyperbolic cosecant
inverse hyperbolic functions
Positive and negative parts
decomposition of real-valued functions
diatomic molecule
molecule composed of only two atoms of the same or different chemical elements
corresponding squares
in chess, a pair of squares such that the occupation of one square by a king forces the enemy king to move to the other square in order to hold the position
Sock and Buskin
footwear symbolic of comedy and tragedy in theatre
bicameral legislature
legislature with two chambers
logical contradiction
logical incompatibility between two or more propositions
lone pair
pair of valence electrons that are not shared with another atom; concept used in valence shell electron pair repulsion theory (VSEPR theory) which explains the shapes of molecules