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Zhou Yu, in the Battle of Red Cliffs.
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Ape-man, hunting tactics.
Cave Man.
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Gonggong and Zhu Rong fought in Buzhou Mountain.
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Savage, Beijing Peak Cave Man. When besieging the beasts, but I don't know how to fight or anything.
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Yes, it was Tian Dan This battle was called a "surprising victory" by Sima Qian, and Tian Dan was also named the "Father of Qi".
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Fight fire with fire"The principle is: set fire on the periphery of the forest fire, use the internal suction generated by the forest fire, make the fire burn in the direction of the forest fire, and burn off the fire path of the forest slag fire spreading outward. However, this method is highly technical and risky.
Fighting fire with fire is a special method of forest fire extinguishing, and it is also the best way. The purpose of opening a fire line is to prevent fire; The second is to carry out the implementation of fighting fire with fire. After the fire line is opened, the reverse burning operation should be taken immediately to fight the fire with fire.
The fire line should not be too wide, 1 meter wide for grass, 2 3 meters wide for shrubs, 4 meters wide for the remaining felling land, and 6 meters wide for forests. When carrying out anti-burning operations, special attention should be paid to the wind direction, terrain, and width of the fire line to ensure safety.
When a fire burns, it heats the air to form a hot airflow, while the air is colder in the area where the fire is not burned. The lack of locust will produce air flow to areas with colder air, and the fire will spread. Fighting fire with fire can first burn the resources needed for the fire to burn, so that it cannot continue to spread.
Second, the convection of hot air on both sides can also be used to prevent the fire from spreading.
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The principle of use is mainly to isolate the oxygen needed for the combustion of the mountain fire, resulting in insufficient oxygen to extinguish the fire. Attention should be paid to the distance between the ignition point and the fire area, too far is equivalent to setting fire, too close is equivalent to helping to burn, and special attention should be paid to the wind direction. -- All of this requires experience.
The reason is very simple: the area where the fire burns, the temperature is high, the air flow rises, it becomes low pressure, and the surrounding air flow concentrates towards the fire area, ignite the fire at the appropriate distance, the fire will spread with the air flow to the fire area, and soon form a separation zone without combustibles in front of the fire, thus stopping the advance of the fire. When a fire spreads, it creates an updraft, so that the air flow from other directions will flow over to replenish it, forming a gust of wind.
If you artificially light a fire in the opposite direction of the spread of the fire (i.e., in front of the spread of the fire), the two fires will run in one direction and eventually meet. The fire was extinguished because there was no burning material around the two fires, and the oxygen was exhausted in the middle of the fire. This method is generally used when the wind is not very strong.
If the wind is strong, the effect is counterproductive. It's better to find a place to do a pilot, after all, it's a big deal, and you can't just have a theory. Fire extinguishing fireIn sparsely populated and remote areas of Australia, Aboriginal people have been using fire to fight fire for thousands of years.
Now, science is catching up with them. New research shows that the traditional methods used by northern tribes are the most effective way to reduce the seasonal damage caused by fires in most of Australia's local woodlands. Mr. Dick William, an ecologist at the Commonwealth Scientific and Industrial Research Organisation, said:
As far as science is concerned, what indigenous people have done for millennia can be supported by science. "Dick William conducted a four-year study of wildfire control in Kakadu National Park using indigenous methods. The study found that the traditional method is to clear understory shrubs and grasses by igniting fires (burning wasteland) before the peak of the fire danger period in forest areas and letting them burn uncontrollably, which may later become more desirable fuels.
Early arson "will be cooler" and less damaging.
Robert Hooke, is a ground glass. He grinded the glass into a lens and discovered the cell!
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