| 词条 | Flame projector |
| 释义 |
In pyrotechnics, a flame projector is a 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.[1][1] The simplest form of flame projector is simply a vertical tube mounted on a base, containing powder and a hole for an electric match.[2] 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. [2] References1. ^{{cite book|pages=534|title=Lighting control-technology and applications|author=Robert S. Simpson|publisher=Focal Press|date=2003|isbn=0-240-51566-8}} {{technology-stub}}2. ^1 2 {{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}} 1 : Pyrotechnics |
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