Conductor or conduction may refer to:

In science:

  • Electrical conductor, a material allowing the flow of electric charge
  • Electrical conduction, the movement of charged particles through an electrical conductor
  • Fast ion conductor, a solid-state electrical conductor which conducts due to the movement of ions
  • Conduction (heat), the transfer of thermal energy through matter
  • Electrical conduction system of the heart

In music:

  • Conductor, a person who leads a musical ensemble by way of visible gestures known as conducting
  • Conductor (album), an album by indie rock band The Comas
  • Conduction, a type of structured free improvisation in music notably practiced by Butch Morris

In other:

  • Conductor (transportation), a person who sells and checks tickets on a bus, train, etc.
  • Conductor (architecture), a traditional name for a downspout
  • Conductor (Army), a senior Warrant Officer appointment in the Royal Logistic Corps and its predecessors
  • Conductor (underground railroad), an operative of the Underground Railroad of the 19th century United States helping move slaves to freedom
  • Mr. Conductor, a character in Shining Time Station and in Thomas and the Magic Railroad

In mathematics:

  • Conductor (ring theory), an ideal of a ring that measures how far it is from being integrally closed
  • Conductor of an abelian variety, a description of its bad reduction
  • Conductor of a Dirichlet character, the natural (smallest) modulus for a character
  • Conductor (class field theory), a modulus describing the ramification in an abelian extension of local or global fields
  • Artin conductor, an ideal or number associated to a representation of a Galois group of a local or global field
  • In the theory of numerical semigroups, the conductor of a numerical semigroup (also called the Frobenius number of the semigroup) is the greatest integer not in the semigroup.

Famous quotes containing the word conductor:

    I was the conductor of the Underground Railroad for eight years, and I can say what most conductors can’t say—I never ran my train off the track and I never lost a passenger.
    Harriet Tubman (1821–1913)