What color flame has the coolest temperature?

Answer 1

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.

Answer 2

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.

Answer 3

The hottest flame is a transparent blue/white colour. A darker blue flame usually shows unburnt gas.

Answer 4

the hottest flame is white as made fact by NASA

Answer 5

The orange-yellow (or even red-black) gas flame is the coolest (350oC), the white-blue flame is much hotter.

Answer 6

at the lower part of the fire

Answer 7

orange/yellow

Answer 8

Yellow

Answer 9

What is the hottest flame and fire

Answer 10

Blue