Clue:
Solids like wood, for example, don't burn as solids until initial heat converts 'em to gas.
I used to demonstrate this � back in the days when coffee cans had steel lids � by filling a coffee can half full of sawdust, punching a nail hole in the lid, heating the closed can on a stove, igniting the hot gas that spewed from the hole, blowing the flame out, letting the can cool-off, and finally opening the can to show that the sawdust wasn't even browned or charred � certainly not burnt.
All this takes place with wood over a much longer time than it does with powder.
When you really, thoroughly grasp this principle and assimilate it into your thinking, several ways that the "SEE" can occur begin to become very clear to you. (This isn't the only phenomenon that's part of it, of course.)
