title: Interval
text: # Interval
  
  Interval may refer to:
  
  ## Mathematics and physics
  
  * Interval (mathematics), a range of numbers
     * Partially ordered set#Intervals, its generalization from numbers to arbitrary partially ordered sets
  * A statistical level of measurement
  * Interval estimate
  * Interval (graph theory)
  * Space-time interval, the distance between two points in 4-space
  
  ## Arts and entertainment
  
  ### Dramatic arts
  
  * Intermission, (British English: interval), a break in a theatrical performance
     * Entr'acte, a French term for the same, but used in English often to mean a musical performance played during the break
  * Interval (play), a 1939 play by Sumner Locke Elliott
  * Interval (film), a 1973 film starring Merle Oberon
  
  ### Music
  
  * Interval (music), the relationship in pitch between two notes
  * Intervals (band), a Canadian progressive metal band
  * Intervals (See You Next Tuesday album), 2008
  * Intervals (Ahmad Jamal album), 1980
  
  ## Sport
  
  * Playing time (cricket)#Intervals, the breaks between play in cricket
  * Interval training, a training technique used by runners and cyclists
  
  ## Other uses
  
  * Interval Research Corporation, a technology think tank founded by Paul Allen
  * Recess (break), a break between classes, also called "interval" in New Zealand
  * Jerry Interval (1923–2006), American portrait photographer and educator
  