If filings of iron, sulphur and water be mixed together, these bodies thus capacitated to act on each other, are heated by degrees, and ultimately produce a violent combustion.
Afterburner systems, designed to operate up to a stoichiometric overall mixture strength , are always fairly close to combustion instability or screech.
While traveling to a newly logged area to burn slash piles I wanted to take a picture of the forest floor. The trees had been thinned to increase aspen tree regeneration.
He could not understand how people paid for food and valuable things with paper! He was also puzzled by the black stones people used to burn to produce heat.