What is the science of red hot embers, that no longer burn, not rekindling new wood put into the fireplace and instead just turning them into more black embers, until you throw a match onto the fire and the whole thing is ignited? As if it wants to burn but is unable to kindle itself without another fire from outside. >Newton?
>>16476652It burns as in running an exothermic redox reaction. There is just no flame, as the flammable gases have already been driven off, hopefully burned. A yellow flame is just glowing carbon that is not (yet) turned to CO2.Depending on how you set up the firewood, you can get blue flickering (or "dancing") flames. This is from carbon monoxide that starts burning once it gets enough oxygen to complete the combustions.
Just solid carbon smoddering with little gas phase.
>>16477978>>16476943But why isn't the fresh wood burning until I introduce a flame?
>>16479514You need to ignite the flammable gases emitted by the hot wood.
>>16479739i.e blow air into them when you have new wood on top
