lighting

• baby spot: a small light [under 500 watts]
• backlight: light coming from upstage, behind scenery or performers to sculpt and separate them from the background.

  
• bar: a metal tube used for hanging lanterns
• barn door: a rotatable attachment consisting of 2 or 4 metal flaps [hinged] fixed to the front of a fresnel lantern to cut off the beam in particular directions

  
• blackout: a lighting cue where all stage lights go off simultaneously.
• board: abbreviation for lighting control board
• build: increase light levels
• check: decrease light levels
• colour sheet: a sheet of plastic usually composed of a coloured resin which creates coloured light on stage
• colour mixing: combining the effects of 2 or more lighting gels / filters
• cross-fade: bringing another lighting state up to completely replace the current lighting state.
• cue sheet: a list of effects that tell the lighting designer when to change the lighting state. `
• cyclorama: a fabric drop hung from a curves or segmented batten, or a curved wall at the back of the stage, upon which light can be casted to create effects.
• diffusion gel / frost: softens light
• downlight: a light from directly above the acting area
• flash: when lights are flashed for effects
• gobo: metal slide placed in gate of lantern which makes a pattern`
• ground row: floodlight battens placed on stage
• halogen: gas contained in lamps
• house lights: the lights that illuminate the auditorium before and after the performance and during intermission
• kill: instruction to stop action or effect
• lantern: stage light
• level: intensity of light
• master: lever / slide which controls all light
• profile spot: lantern which can produce soft or hard light
• shutter: device in lantern used to shape beam
• spill: unwanted light on the stage
• spot: [spotlight] a bright beam of light projected onto a performance space.
• strobe: flashing light
• wash: agenereal fill of light and colour across the stage