Doubling may refer to:
Mathematics
* Arithmetical doubling of a count or a measure, expressed as:
**
Multiplication
Multiplication is one of the four elementary mathematical operations of arithmetic, with the other ones being addition, subtraction, and division (mathematics), division. The result of a multiplication operation is called a ''Product (mathem ...
by 2
** Increase by 100%, i.e. one-hundred
percent
In mathematics, a percentage () is a number or ratio expressed as a fraction of 100. It is often denoted using the ''percent sign'' (%), although the abbreviations ''pct.'', ''pct'', and sometimes ''pc'' are also used. A percentage is a dime ...
**
Doubling the cube
Doubling the cube, also known as the Delian problem, is an ancient geometry, geometric problem. Given the Edge (geometry), edge of a cube, the problem requires the construction of the edge of a second cube whose volume is double that of the first ...
(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
In music, an arrangement is a musical adaptation of an existing composition. Differences from the original composition may include reharmonization, melodic paraphrasing, orchestration, or formal development. Arranging differs from orchestr ...
*
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
Double tracking or doubling is an audio recording technique in which a performer sings or plays along with their own prerecorded performance, usually to produce a stronger or bigger sound than can be obtained with a single voice or instrument ...
, a recording technique in which a musical part (or vocal) is recorded twice and mixed together, to strengthen or "fatten" the tone.
Other
*
Doubling (psychodrama) is a technique of provoking a
protagonist
A protagonist () is the main character of a story. The protagonist makes key decisions that affect the plot, primarily influencing the story and propelling it forward, and is often the character who faces the most significant obstacles. If a ...
by a participant, for effect.
* Doubling in the theatre is where one actor plays more than one part in the same performance.
*
Doubling (textiles)
Doubling is a textile industry term synonymous with combining. It can be used for various processes during spinning (textiles), spinning. During the carding stage, several sources of roving are doubled together and drawn, to remove variations in th ...
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
*
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
A two-way radio is a radio transceiver (a radio that can both transmit and receive radio waves), which is used for bidirectional person-to-person voice communication with other users with similar radios, in contrast to a broadcast receiver, whi ...
, 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)
Double, The Double or Dubble may refer to:
Mathematics and computing
* Multiplication
Multiplication is one of the four elementary mathematical operations of arithmetic, with the other ones being addition, subtraction, and division (math ...
*
Period-doubling bifurcation
{{disambig