Bipolar

Bipolar may refer to:

Astronomy

 * Bipolar nebula, a distinctive nebular formation
 * Bipolar outflow, two continuous flows of gas from the poles of a star

Mathematics

 * Bipolar coordinates, a two-dimensional orthogonal coordinate system
 * Bipolar set, a derivative of a polar set
 * Bipolar theorem, a theorem in convex analysis which provides necessary and sufficient conditions for a cone to be equal to its bipolar

Medicine

 * Bipolar disorder, a mental disorder that causes periods of depression and periods of elevated mood
 * Bipolar I disorder, a bipolar spectrum disorder characterized by the occurrence of at least one manic or mixed episode
 * Bipolar II disorder, a bipolar spectrum disorder characterized by at least one episode of hypomania and at least one episode of major depression
 * Bipolar disorder not otherwise specified, a diagnosis for bipolar disorder when it does not fall within the other established sub-types
 * Bipolar neuron, a type of neuron which has two extensions

Albums

 * Bipolar (Up Dharma Down album), 2008
 * Bi-Polar (Vanilla Ice album), 2001
 * Bipolar, a 2009 album by rock group El Cuarteto de Nos
 * Bipolar, a 2019 EP by American singer-songwriter Yot Club

Songs

 * "Bipolar" (Peso Pluma song), 2023
 * "Bipolar", a song by Blonde Redhead from their 1997 album Fake Can Be Just as Good
 * "Bipolar", a song by Gloria Trevi from her 2013 album De Película
 * "Bipolar", a song by Gucci Mane from his 2018 album Evil Genius
 * "Bipolar", a 2019 song by Kiiara
 * "Bi Polar", a 2021 song by Bhad Bhabie
 * "Bye Bipolar", a song by Brandy from B7, 2020

Technology

 * Bipolar electricity transmission, using a pair of conductors in opposite polarity
 * Bipolar encoding, a type of line code where two nonzero values are used
 * Bipolar violation, a violation of the bipolar encoding rules
 * Bipolar electric motor, an electric motor with only two poles to its stationary field
 * Bipolar (locomotive), a locomotive using a bipolar electric motor
 * Bipolar signal, a signal that may assume either of two polarities, neither of which is zero
 * Lithic reduction: Bipolar percussion (archaeology)

Transistors

 * Bipolar junction transistor (BJT)
 * Heterojunction bipolar transistor (HBT)
 * Insulated-gate bipolar transistor (IGBT)

Other uses

 * Bipolarity, polarity in international relations involving two states