showstack / glossary / haze
Haze 薄霧
A fine, even atmospheric suspension that makes light beams visible without reading as smoke. Distinct from fog (a visible cloud) and low fog (which hugs the floor); the fluid chemistry and exposure rules live in ANSI E1.5 and E1.23.
中文
令光束現形而唔似煙嘅均勻懸浮微粒。同 fog（成團嘅煙）同低煙（貼地）唔同。使用同暴露規範見 ANSI E1.5 / E1.23。
Easy to get wrong
Haze triggers ionisation smoke detectors: venues isolate specific zones for the effect through a permit process, and un-isolated haze is how a show meets the fire brigade mid-number.
Next to this
Fog煙霧／煙A visible cloud of condensed fluid droplets, a few micrometres across, produced by flashing a glycol or glyce…Low fog低空煙／貼地煙Fog cooled below the temperature of the room so that it sinks and lies on the deck. Produced by chilling ordi…Smoke煙（燃燒生成）Solid and liquid particulate produced by combustion. In an entertainment context it is the output of a pyrote…Blackout暗場（BO）A lighting state in which all stage light goes out, usually as punctuation at the end of a scene. A dead blac…
Sources
- Theatrecrafts glossary of technical theatre terms — Theatrecrafts / ABTT heritage primary
- Theatrical smoke and fog — Wikipedia
Understand the mechanism
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