The flame is always much nakasendou area and the area that is heated slightly. Watch the flame of a burning candle.
In the area of the wick is brown point 1, where the light is almost not perceivable to the eye.
Slightly higher is bluish part 2. This evaporation area paraffin. Oxygen here does not penetrate, and therefore, the gases in this area do not burn.
This reservoir supply part 3, in which the gases are subjected to complete combustion. The color of this band - orange or bright red.
Part n surrounds the strip 4. She is not visible, but the hottest of all: it is here that the process of complete combustion of carbon.
In the flame of a candle to distinguish individual strip very easily. And to detect temperature differences in these bands, try a series of experiments.
Take a small piece of white cardboard or heavy paper. Both hands hold the sheet stretched over a lit candle, half-straddling the flames, but so that the paper is not touched to the wick.
You will find that on the cardboard formed a black circle and a white center. Before the paper will turn, it'll take a long time. But if it still lights up, then sudoite fire from above. You will then find that the center will remain intact, and the contours will be burned.
Thus Michael Faraday demonstrated the difference of the individual parts of the flame. You can also take a stick of white wood the size of a pencil. You will see that the strip 2 is not hot enough to burn the stick. And the part surrounded by the strips 3 and 4, will be black and charred and clearly separated from the Central part, completely white.
Imprint flame on paper
Using tin cans on paper, you can print the candle flame.
For this purpose, the Bank should tightly wrap a piece of paper and place it in the flame. Leave the jar for a few seconds and do not be afraid that the paper will burn: as it is pressed against the metal cylinder, then deprived of oxygen. And without it can not happen the combustion process .
If you then remove the paper, then the flame will be on it is clearly printed.
Sometimes there are black lines. It's not the products of combustion of the paper. Line work if you put paper to wick. In places of contact printed soot in the form of lines.
The trick with matches
If you take a match and quickly hold her Scouse flame, directing the head of the match through the center of the flame, the match will not light.
But if the match through the upper part of the flame, it will light up immediately.
This is another graphic illustration of the fact that the flame temperature is different in different areas.