Great question, I never thought of that.
I tend to think it would be just a blur of different colors mixed together, probably not even visible.

Yeah it has to have been that

Yeah that makes sense.
It was my original thought at the time but there I was the other day remembering about this after seeing something about thermite and I started wondering if magic had happened… But no it was just a “learning experience”.
Thanks for taking the time!

Thanks, it makes alot of sense.
What about the super bright light coming off though, is it normal for melting steel?
Now that I’m writing this I realize that I could just go check videos of steel melting to compare…
But the question remains: would it be possible for thermite to have formed just from the presence of aluminium, iron oxyde and heat?

Edit: My bad, the question has been answered!
I didn’t see the other comments when I wrote this…