I'm not an expert, but I think it depends on what you're burning, if it is a gas fire than a lazy yellow flame is the coolest. But if you're burning carbons, (paper, charcoal, etc.) than a greenish flame is the coolest.
The hottest flame is blue (or a shade thereof).
In industrial processes, such as oxy-fuel welding and cutting, the base of the flame tends to be closer to the ultraviolet range. Frequencies in this range and higher are not considered "colored light."
Higher frequency photons (ultraviolet to gamma rays) tend to have more energy, which is the reason ultraviolet light gives you sunburns, while infrared, micro, and radio waves do much less harm.
The hottest flame is a transparent blue/white colour. A darker blue flame usually shows unburnt gas.
The orange-yellow (or even red-black) gas flame is the coolest (350oC), the white-blue flame is much hotter.
at the lower part of the fire
orange/yellow
Yellow
What is the hottest flame and fire
Blue
The color <> Blue flame is one of the hottest Yellow is one of the coolest
The external part of the flame is the coolest.
The hottest flame is the blue flame and the coolest flame is yellow.
The color of the flame depends on the temperature, fuel nature, composition of particles in the flame, oxygen concentration.
The coolest stars are red.
A lazy yellow flame is the "coolest" flame.
For a Bunsen burner the lowest temperature is in the extreme lower part of the flame.
The color <> Blue flame is one of the hottest Yellow is one of the coolest
The external part of the flame is the coolest.
Blue = Hottest Red = Coolest.
The color of the flame depends upon temperature. Please see this link.
Yes.
The coolest flame on the Bunsen burner is the yellow-orange flame - approx. 300 0C.
The coolest flame on the Bunsen burner is the yellow-orange flame - approx. 300 0C.
yellow flame
Red is the coolest star and blue is the hottest.
Red from all data I have looked at.