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en.wikipedia.org/wiki/Flame

A flame (from Latin flamma) is the visible, gaseous part of a fire. It is caused by a highly ... In this state they can then readily react with oxygen in the air, which gives off ... butane flame on the right shows that the blue color arises specifically due to ... For a given flame's region, the closer to white on this scale, the hotter that ...

van.physics.illinois.edu/qa/listing.php?id=1552

If you heat a piece of steel until it looks white, it is quite hot. ... If something is even hotter than this (so hot that it looks blue to our eyes) it means that the ...

www.quora.com/How-hot-is-blue-fire-as-compared-to-white-fire-What-is-the-relationship-between-fire-color-and-temperature

It depends. Hot objects radiate light across the spectrum. You may have heard the term "color ... Note that a blue propane flame is hotter than a yellow one, but this is just due to efficient combustion, and the difference is likely in the hundreds of ...

sciencing.com/colors-fire-hot-8631323.html

Apr 25, 2017 ... Flames often appear white when emitting a variety of colors at the same time, ... At hotter temperatures, the flame color moves into the blue/violet end of ... Objects that emit violet or ultraviolet light are hotter than those that emit ...

maggiemaggio.com/color/2011/08/fire-ii-color-and-temperature

Aug 26, 2011 ... The dominant color in a flame changes with temperature. The photo of the ... Anytime you see blue in a fire it is hotter than white. The range is ...

www.elgas.com.au/blog/1585-why-does-a-gas-flame-burn-blue-lpg-gas-natural-propane-methane

Blue gas flames are good. Red/Yellow flames are not. Why gas flames are blue colour, what temperature and why it's important for safety & saving money…

oneminuteastronomer.com/708/star-colors-explained

Dec 23, 2008 ... Just as a glowing red-hot coal is cooler than a white-hot coal, ... But a blue star doesn't emit only blue light, nor does a red star emit only red light. ... and more massive stars burn much faster and hotter than less massive stars.

wonderopolis.org/wonder/what-is-the-color-of-fire

The color blue indicates a temperature even hotter than white. Blue flames usually appear at a temperature between 2,600º F and 3,000º F. Blue flames have ...

www.reference.com/science/temperature-white-flame-15566bb89f2fdeae

For non-organic burning, such as gas or other chemicals, the range includes blue . Blue flames are hotter than white ones. The more white a non-organic flame ...