Whilst reading yet another fanfic, I came across this line by the author:
“… her fire wasn’t the usual orange flame that we see- it was instead blue Fire still, just a bit cooler, a bit gentler.”
1st- The sentence would flow better/ be more grammatically correct if it was written “… her fire wasn’t the usual, orange flame that we normally see; it was instead blue fire- just a bit cooler, a bit gentler.” Still, though, even if the sentence was written this way, it would still be factually incorrect- which brings me to my second point.
2nd- Blue fire is hotter than orange fire.
This bugged me, so I scrolled down and looked to see if anyone had said anything in the comments section. Which, someone had:
Reader: “… Just an fyi, blue fire is actually hotter than orange/red fire. Of course if its magic then I guess ignore whatever rules you want.”
Author: “… Haha, seriously just thought that it sounded cool. But, that’s and interesting fact! Yupp, please assume it’s another one of those ‘magical’ reasons. Thank you!!”
(Please note that the reader was being nice and respectful about the criticism! I took it out, because there were potential spoilers/irrelevant stuff, but the reader began by complimenting the writing and expressing interest in what might happen in future chapters. This is exactly how you should go about giving constructive criticism!)
The reader was right, of course. Blue fire is actually hotter than even white fire! And the hottest fire is a white-blue flame.
“When all flame colors combine, the hottest flame color is white blue.”
“The color of the blue flame indicates that it is even hotter than white. Typically, blue flames can go up from 2,600 degrees Fahrenheit to 3,000 degrees Fahrenheit.”
However, there are actually two different ways to turn a fire a different color- temperature, which we’ve already discussed, and the fuel’s chemical composition.
So what chemicals can be used to turn a fire blue? Here is the list I have come up with: Copper Chloride, Copper Halide, Bismuth, Arsenic, Cesium, Germanium, Indium, Niobium, Phosphorus, Selenium, Lead, Tin, Tantalum, or Zinc.
As you can see, there’s actually quite a variety of chemicals that could be used to create blue fire (although the exact shade would need specific ones). However, I have no idea how the chemicals effect the fire temperature, because as one of my previous pictures stated, “… blue flame is typically fueled by natural gas, and natural gases tend to burn hotter than organic materials such as wood.”
“But Unwanted-Editor! None of that matters if it’s magic!” That is correct, my dear readers, magic is a handy little tool that we can use to ignore science and logic. And truly, I would be content with letting it be, if not for a line just a little bit after the one I read that initially got me into this rant:
“Blue fire was known to meld and carve”
Meld. Meld!
Now, the author isn’t incorrect to say that blue fire is used to meld, but melding (and I assume the author is referring to welding) is bending metal to your will. Logically, don’t you think that the fire would need to be at a higher-than-normal temperature in order to actually do that? Yes. Yes it does.
“Temperatures high enough to produce blue flames are unusual in campfires, which is why they are more often seen when metals are used, as in welding.”
Now, magic can excuse a lot, but I draw the line at having a low-temperature-blue-flame-that-can-also-be-used-for-melding/welding. It just doesn’t make any sense, especially since the magic of the world we’re in relies heavily on the balance of things. Please, if you’re going to make the dragon breathe blue fire, than at least do it right.
Anywho, if you look at one of my previous pictures, you can see that I was already on Chapter 16 when this all happened, so clearly the author wasn’t actually a terrible writer. In fact, I even finished the fic and started the Part 2 of the fic (unfinished) that the author had written before I made this post. So, Kudos to the author for still engaging me, even when my brain rebelled against certain things! Thanks for being brave enough to share a piece of your heart on a public platform, and best of luck on all future writing endeavors!
Sources:
Learn how to make blue fire. Choose colorants that turn flames blue and fuels that either burn blue or don't mask the color.

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