Fire kinds a sphere in microgravity. Picture courtesy NASA The dangerous point with regards to the chemical reactions in fire is the fact that they are self-perpetuating. The heat with the flame alone keeps the fuel with the ignition temperature, so it proceeds to melt away so long as There is certainly gas and oxygen all-around it.
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An increase in PM smoke emitted from the Hayman fire in Colorado in June 2002, was related to an increase in respiratory signs in sufferers with COPD.[255] Checking out the wildfires in Southern California in 2003, investigators have demonstrated a rise in medical center admissions resulting from bronchial asthma signs or symptoms when remaining subjected to peak concentrations of PM in smoke.