Above a roaring campfire, we only perceive orange and yellow hues as tiny carbon and sodium particles from the wood fuel are illuminated in the burning maelstrom. Under a boiling pot of water on a ...

In conclusion, a blue flame means your gas cooker is working just as it should. Green, yellow, or orange flames are signs that something might be off, whether it’s a little grease or a bigger ...

The yellow/orange hydrogen flames in volcanic vents are somewhat elusive compared to the blue flames that are commonly observed around active lava flows. Lava flows themselves typically don’t ...