What color fire is the hottest?

Question

Is blue fire hotter than white fire? Is there a fire hotter than both of those?

Answer 1

As the temperature rise, the colour of the maximal radiation moves to the short waves (Yellow>Green>Blue>Violet>UV...)

The hotter stars are blue (and radiate much more UV than the red stars). The white is a mix of colours, and a white star radiates it maximal about the green colour (but the mix is near flat, with near the same radiation for all colours)

Answer 2

white fire is the hottest you can figure this out yourself from using i thing its called a thermal imaging camera. i heard about it on a scifi show called ghost hunters and my dad got me one it tells you the temp. of the room and the hottest there is is white fire...

Answer 3

White is hotter than blue. No

Answer 4

For some reason I was thinking blue is hottest....but then you mentioned white...and now I'm not sure.  Sorry.

Answer 5

Yes, it's called Jessica Alba colored fire.

Seriously, though: regular fire emits blackbody radiation, which is many wavelengths (colors), with one brightest color at the top of a bell-curve shaped graph.  The peak frequency is defined by the temperature, and hotter fires have a higher peak frequency.  However they contain all frequencies below the peak frequency.

So blackbody radiation, from coolest to hottest is:

infrared, red, yellow (green+red), white (r+g+b), and from there it's just brighter white (although the peak frequency is still going up, you just can't see it).

Green/blue colored fire emits its colors through a different mechanism, NOT blackbody radiation.  This is why fireworks can emit so many different colors, even though they all burn (relatively) cool.

Answer 6

it's white because as heat increases the color of the temperature increases causing it to increase to the highest point of color of heat which makes the heat white

Answer 7

i believe white is the hottest

Answer 8

Increase the temperature, and the colour of maximum intensity keeps moving toward shorter wavelengths.  So yes, you could get blue heat or even ultraviolet heat (which would look blue), but you would need a more intense source than any chemical flame could provide.

Answer 9

White - like you can't see it.