Why can fire go away? Why is there fire

Fire it is just an element, it is like Estein said, energy can be transformed into matter, matter can also be transformed into energy, fire it is also a substance, it can be converted into something intangible.

Solar energy is a clean energy, and human beings have been studying how to use solar energy more efficiently, and solar water heaters can be regarded as an important embodiment of the civilian use of solar energy. In the past, whether in the city or in the countryside, almost every household was equipped with solar water heaters. But why is everyone giving up on solar water heaters nowadays?

Why did the solar water heater, which had been on fire for a while, suddenly disappear from the side?

First of all, this is mainly because the solar water heater has too many shortcomings, it is not only very troublesome to install, and the cost performance is not high, if you want to buy a solar water heater, it will cost at least three thousand yuan, and after the purchase, several people will pull it back, and lift him to the roof together, and the installation process is very complicated, if the installation is not done properly, there will be a risk of causing fire.

Secondly, solar energy can only be built on rooftops. Now most of the buildings in China are high-rise buildings, so naturally you will not be allowed to install a solar water heater on the high-rise, after all, there are too many users in a whole building.

Finally, it's easy to say in the summer when it comes to use. In winter or rainy weather, the sun is often not visible all day, and at this time, it will be heated by electricity, which costs a lot of electricity, not to mention the high cost of electricity, and it takes five or six hours to boil water once.

Now the ordinary water heater is much more applicable than it, an ordinary water heater only needs 1,000 yuan at most, and the installation process is very simple, and it is very convenient to use hot water. In contrast to the two, there are fewer and fewer natural solar water heaters.

Fire is a chemical reaction of energy, an element, that burns and can be converted into other forms of matter.

Fire is a natural phenomenon in nature. For example, natural fires caused by volcanic eruptions, natural fires caused by lightning that make trees and oily properties flammable. These wildfires existed on Earth long before the dawn of man.

In the childhood of human beings, fire was not used, and people called this era the era of "Ru Mao drinking blood". According to the available information, humans did not begin to use fire until 50.6 million years ago at the latest. �

The history of human development tells us that the use of fire is another epoch-making event in the journey of human freedom after the making of stone tools, and it opens a new era of further human conquest of nature. It is speculated that hominids used fire in two stages, initially using fire from volcanic eruptions, or natural fire produced by lightning striking trees or petroleum substances. When they first tasted the wild things that had been cooked by the fire, they felt that they were much more delicious and easier to chew than those that were eaten raw, so people began to change their raw food to cooked food, changing the original state of "drinking blood from hair".

Primitive people also used fire to drive away wild beasts in caves and gain a place for themselves to live. At that time, people still took great pains to preserve the fire and manage the fire. �

In the long process of using natural fire, primitive humans continued to deepen their understanding of fire, and when they reached the stage of fossil Homo sapiens, they began to make artificial fire. The earliest method of making fire was to use pyrite to strike flint, and sparks were emitted to ignite the ignition to obtain fire. It was not until the Upper Paleolithic period, with the development of drilling and grinding techniques, that the artificial method of friction for fire was invented.

After learning to make fire, people tried to expand the use of fire, so that fire could play a huge role in man's conquest of nature.

First, use fire to aid in hunting. Secondly, fire can be used to process ** and tools, such as a wooden spear that is burned with fire and then cooled, and its tip becomes hard. Thirdly, with the help of the use of fire, people learned to live in any climate, and humans spread to areas where they had not lived in the past.

Fourth, especially in the process of long-term use of fire, human beings found that the clay became strong and impermeable after roasting, and could also be fired into various utensils according to people's needs, which invented pottery. The success of pottery is the earliest meaningful application of human beings to the physicochemical changes of a substance (clay 0) under the action of fire. Fifth, the development of primitive agriculture is also closely linked to the use of fire.

At that time, agriculture was very extensive, but "slash-and-burn" farming played a very important role in the settlement of people. �

At the end of primitive society, the material production of society has been further developed, and with the improvement of the use of fire, people began to smelt metal and use bronze. Later, due to the birth of blast technology, people further invented the smelting of pig iron. With bronze and iron tools, large-scale deforestation, the reclamation of wasteland, the development of agriculture and the development of pastures were possible.

Thus, fire has given a powerful impetus to the development of social production.

Hehe, I can't imagine how to live without fire!