The tip of the blue part of the flame is the hottest. But the analysis of a flame can be quite complex. Consider a cigarette lighter flame, or a candle flame, or a flame from one of those handheld butane candle lighters “or charcoal grill igniters. The flame looks like a solid conical mass, but it is actually hollow. The visible outer layer is roughly the thickness of a dime, or about one millimeter. The hollow core of the flame contains the fuel gas and air pushing upward into the burning, or combustion, zone.
Here’s where it gets a bit complicated. Atoms are raised to a higher-energy state during combustion as energy from the heat boosts their electrons into orbits farther from the nucleus. When the electrons drop back into their original orbits, the atoms emit light. Flame colours come from the energy released by the electrons of the atoms of burning gases; each colour corresponds to a particular frequency, which is a function of the amount of energy released. Red, orange, or yellow flame corresponds to low frequency, low energy, and low temperature. Blue or violet flame means high frequency, high energy, and high temperature. So the blue part of the flame is the hottest.
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AKASH
The tip of the blue part of the flame is the hottest. But the analysis of a flame can be quite complex. Consider a cigarette lighter flame, or a candle flame, or a flame from one of those handheld butane candle lighters “or charcoal grill igniters. The flame looks like a solid conical mass, but it is actually hollow. The visible outer layer is roughly the thickness of a dime, or about one millimeter. The hollow core of the flame contains the fuel gas and air pushing upward into the burning, or combustion, zone.
Here’s where it gets a bit complicated. Atoms are raised to a higher-energy state during combustion as energy from the heat boosts their electrons into orbits farther from the nucleus. When the electrons drop back into their original orbits, the atoms emit light. Flame colours come from the energy released by the electrons of the atoms of burning gases; each colour corresponds to a particular frequency, which is a function of the amount of energy released. Red, orange, or yellow flame corresponds to low frequency, low energy, and low temperature. Blue or violet flame means high frequency, high energy, and high temperature. So the blue part of the flame is the hottest.