# Flame projector
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{{about|the pyrotechnic special effects device by this name|the military weapon originally called a flame projector|flame thrower}}
right|thumb|a flame projector
In [pyrotechnics](/source/pyrotechnics), a '''flame projector''' is a [special effects](/source/special_effects) device that projects a column of flame upwards, for a short, determined and controllable, period, usually on the order of a few seconds.[{{cite book|pages=534|title=Lighting control-technology and applications|author=Robert S. Simpson|publisher=Focal Press|date=2003|isbn=0-240-51566-8}}] The simplest form of flame projector is simply a vertical tube mounted on a base, containing powder and a hole for an [electric match](/source/electric_match).[{{cite encyclopedia|encyclopedia=The Illustrated Dictionary of Pyrotechnics|author=Bonnie J. Kosanke|publisher=Journal of Pyrotechnics|date=1995|isbn=1-889526-01-0|article=Flame Projector|pages=50}}]
Flame projectors can produce flames of different colours by simply adding a colouring agent. Potassium compounds make purple compounds, for instance. Lithium and strontium are red, sodium is bright yellow, copper and boron compounds are blue or green.