One and a half million years ago a wonderful phenomenon appeared in people's lives. This is fire ...
Together with the heat and light emanating from the flame, the opportunity came to cook food, drive away dangerous animals, burn clay and melt metals.
An invaluable opportunity to use the fiery resource has remained a legacy to the modern world. Many objects used by people in everyday life owe their origin to the "fiery helper."
Fire combines everything: strength, determination, passion, comfort, warmth, light ... Fire causes awe and at the same time attracts!
Fear of fire
What is fire really? According to experts in chemistry, fire is an oxidative reaction in which light and heat are released. In the understanding of historians, the fire element is an integral component of four significant earth elements, which played a paramount role in the birth of civilization. And the mystics attribute to the fire the divine principle and are afraid of it.
A sense of danger at the sight of uncontrolled fire occurs in many people. For most of us, the fear of the fire element is in the subconscious, and it's not just about fires.
It has long been known that on the Earth there are areas with high electrical tension, this is due to the tectonic features of individual territories. Such tension causes:
- unusual fires of objects;
- mysterious phenomena related to fire: luminous radiance in the atmosphere; hovering in the airspace of unusual spherical objects with a bluish glow;
- pyrokinesis is a phenomenon of spontaneous combustion of people.
It's no secret that the concept of fire is surrounded by many mystical stories and legends. Types of fire are widely interpreted, but have one common “fiery” meaning.
What people call "fire"
In the dictionary of D. V. Dmitriev, the ordinary Russian word “fire” has different interpretations:
- Hot gases emitting bright light generated during combustion are fire. You can be in it (to be engulfed in flames, burn), you can breed (kindle), you can put fire (destroy).
- To be afraid like fire (terribly afraid), to run as if from fire (to flee from all legs, and no longer get involved in a critical situation).
- Go into fire and water (devote yourself entirely to man).
- Yes, everything burns with a blue flame (fire) (to quit painful things).
- Mountain ash fire (bright color).
- Fire is a kindled fire, a hearth.
- Fire - light in the room from incandescent lamps.
- Eyes burn with fire (fiery gaze, fixed).
- Fire is the process of activating a small gun. "Fire!" - the call of the commander.
- Fire can be opened (start shooting) and stopped.
- To be like on fire (to temper).
- Fire of love, hate (strong feeling).
- Man is fire (energetic, strong).
- Sparkler
- Eternal Memorial Fire
- There is a situation of getting out of the fire and into the fire (extremes), but it happens to be between two fires.
- There is no smoke and fire (it means that rumors are not in vain).
- It happens that they fight with fire and sword (ruthlessly), add oil to the fire (exacerbate the conflict), go through fire and water (overcome all trials).
In philosophy, there is the term “fire element”, in Christianity - “heavenly fire of God”, in mythical legends there are deities with a face of fire. Live fire arises from the mutual friction of two wooden parts. A popular fire show involves juggling burning objects.
Fire - a certain stage in the combustion process
A violent reaction during which oxidation of combustible materials by oxygen occurs is called combustion. The combustion process is accompanied by fire. This releases a large amount of light and heat. Fire is a certain stage in a complete combustion cycle.
From a chemical point of view, this is a stream of hot gases generated in the region of interaction of burning substances and combustion products, forms a flame and goes up. This process demonstrates the essence of the appearance of flame, shows what fire is.
From the point of view of physics, fire is a luminous hot zone of interaction of vapors, gases or products of thermal decomposition of a combustible substance with oxygen.
What and how it burns
The degree of ignition of individual materials and their combustion temperature are not the same. Most often, ignition of a solid occurs at 300 ° C. The temperature of a burning match is 750-850 ° . Wooden matter ignites at 300 ° C, and it burns at a temperature of 800 to 1000 ° C.
The combustion temperature of propane-butane can be from 800 to 2000 ° C. A temperature of 1300–1400 ° C accompanies the combustion of gasoline. Kerosene ignites at 800 ° C, and in pure oxygen conditions at 2000 ° C. The ignition temperature of alcohol is about 900 ° C.
It is not difficult to determine the situation in the source of ignition if you know what kind of material is burning.
Fire is a friend!
Almost everything that people use to ensure a comfortable existence is associated with fire:
- household energy: gas and heating, electricity and light;
- ore mining and smelting; manufacturing at the enterprises of equipment, household items, even forks.
Neither ceramic production nor glass making is possible without fire. An obvious connection with the fire of the chemical industry, metallurgy, and nuclear energy. Steam cars and vehicles would stop without fire.
Fire serves people differently, but always requires careful and accurate handling.