The fog has been named the most effective means against fires
The authors of the new work took samples of parts of woody plants (branches with ordinary or acerose leaves) and dried them for a week under stable temperature and humidity conditions. Then the scientists set them on fire (in a laboratory) and then extinguished the fire with water spray nozzles, widely available in various shops. Researchers managed to find out that when a droplet size is between 50 and 500 micrometres, combustion stops so quickly that there is no need for a considerable amount of water to extinguish the fire. The usual amount of water required to extinguish a forest fire is 3−5 litres per square metre, but during the experiment the fire was extinguished with less than one litre per square metre, down to just 0.65 litres m2, in some of experiments.