Why did humans learn to use fire? How did humans learn to use fire?

Most animals are instinctively afraid of fire, because the power of fire is so violent that a single fire in a primeval forest can kill countless animals and plants, and it is difficult to determine how humans have overcome this hurdle. Human beings began to use fire at least more than 1 million years ago, and some simple stone tools were found near the fossils of Yuanmou Man found in Yunnan, China, and a large number of charcoal chips were also found. Such discoveries have been found in many parts of the world, but they are still Homo erectus, have not yet evolved into Homo sapiens, have little to do with modern humans, and are a branch of ancient humans, but they can show that humans have a long history of using fire.

Other branches of humanity, including the direct ancestors of modern humans, presumably mastered the use of fire at that time. The fossil of Lucy, a hominid found in Africa, can prove that the history of Homo erectus can be traced back to at least 3 million years ago, and Lucy's skeletal features show that she has the same characteristics as a gorilla and humans, and her leg bones show the structure of walking upright, but her brain size is still relatively small, which also proves that the rapid evolution of human brain size occurred after walking upright. After primitive Homo erectus grasped the speculation that fire could have occurred in mountain or jungle fires, he found a large number of animal remains, which could be eaten and easily eaten.

After this phenomenon was discovered by primitive people, they began to actively apply fire. Since human beings use fire, food is easier to digest, primitive people do not need to spend a lot of time to bite food, after catching prey, throw it in the fire to roast, food is also easier to digest, bringing sufficient nutrition to primitive people, after which human brain capacity began to develop rapidly, correspondingly the stomach and intestines gradually shrank because of eating cooked food, and the function was slightly weakened. The application of fire is also convenient for primitive people to hunt at night, illuminate, and protect themselves, and when the weather is cold, a piece of roasting fire also promotes the development of human society.

From the Yuanmou people more than 1 million years ago to the Beijing people 500,000 years ago, they all left traces of fire. The people of Peking not only knew how to use fire, but probably already mastered the technique of preserving fire. Both the Yuanmou and the Pekingese used natural fire.

Early human beings used nature to obtain ** is natural thunder and lightning to make fire; spontaneous combustion of forest grass and trees to make fires; Spontaneous combustion of open-pit coal**; Occasional friction to start a fire.

The cave people have learned to make fire manually, which is a step forward from the past when only natural fire was preserved. After the invention of artificial fire, primitive man mastered a powerful force of nature, which promoted the development of human institutions and society, and finally separated man from animals.

This is discovered by human beings, lightning struck a big tree, the tree caught fire, crushing the animal, and accidentally found that the cooked meat is quite fragrant and delicious, and the cooked meat is easy to digest, and making fire can scare away wild beasts.

From using the wild cherry blossom fire and preserving the fire, to learning how to make a fire manually. Such as: striking stones to make fire; Drill wood for fire.

It is also the result of the accumulation of natural knowledge that guesses human experience.

Learning to use fire does represent a milestone in humanity's march toward a civilized world. Strictly speaking, learning to process tools is an important difference between humans and animals.

During the primitive civilization period, human beings learned to convert fire into heat energy to barbecue food, fight prey, and use the light brought by fire to illuminate, and the final result is to learn to rub and make fire, which is an ability that other animals do not have. This ability is the secondary production utilization of tools.

By the industrial period, the secondary production capacity of human beings was used to invent, wind energy to electricity, nuclear energy to electricity, and a series of energy conversions.

Benefits of Fire:

The use of fire first enabled humans to form and popularize the cooked food life. In particular, the invention of artificial fire has enabled human beings to eat cooked food at any time, reduce diseases, and promote the development of the brain and the evolution of the system. The promotion of cooked food has also expanded the variety of food, so that human beings finally got rid of the era of "Ru Mao drinking blood".

Fire also brings warmth to humans, thus expanding the range of human activities, so that people are no longer limited by climate and geography, and can live in cold regions.

Disadvantages of fire: When a fire gets out of control, it is often called a misfire or fire, and the harm is very great, especially in forest fires.

Fire and water are ruthless, and once a fire breaks out, the harm is great.

Extended Information: Fire is a chemical reaction that emits light and heat, and the temperature is very high, and it is a way of releasing energy.

The flame is divided into flame core, inner flame and outer flame, the temperature rises sequentially from the inside to the outside, the outer flame has the highest temperature because of sufficient oxygen supply and complete combustion, and the flame core temperature is the lowest.