Doubling may refer to:

Mathematics

  • Arithmetical doubling of a count or a measure, expressed as:
  • Multiplication by 2
  • Increase by 100%, i.e. one-hundred percent
  • Doubling the cube (i. e., hypothetical geometric construction of a cube with twice the volume of a given cube)
  • Doubling time, the length of time required for a quantity to double in size or value
  • Doubling map, a particular infinite two-dimensional geometrical construction

Music

  • The composition or performance of a melody with itself or itself transposed at a constant interval such as the octave, third, or sixth, Voicing (music)#Doubling
  • The assignment of a melody to two instruments in an arrangement
  • The playing of two (or more) instruments alternately by a single player, e.g. Flute, doubling piccolo
  • Musicians who play more than one woodwind instrument are called woodwind doublers or reed players
  • Double tracking, a recording technique in which a musical part (or vocal) is recorded twice and mixed together, to strengthen or "fatten" the tone.

Other

  • Doubling in the theatre is where one actor plays more than one part in the same performance.
  • Doubling (textiles) is the process where six slivers of cotton are fed into a draw frame, stretched and drawn together to improve the uniformity of the roving before it is spun <!-- Collier p70 -->
  • Doubling (naval tactic) was a means of focusing gunfire in formations of sailing warships maneuvering as a line of battle.
  • Double knitting is the process of combining two or more lengths of yarn into a single thread.
  • Doubling in two-way radio, where two or more transmitters transmit at once on the same frequency, interfering with one another and garbling all messages.
  • Syntactic doubling is a phenomenon consisting in the lengthening (gemination) of the initial consonant of certain words
  • When more than one round is fired in a semiautomatic gas powered rifle with only one pull of the trigger, also known as a slam fire.
  • Doubling trains tracks has two tracks for two direction traffic.

See also

  • Double (disambiguation)
  • Period-doubling bifurcation