herald (plural heralds) 1  A messenger, especially one bringing important news. 2  A harbinger, giving signs of things to come. ( 3 heraldry) An official whose speciality is heraldry, especially one between the ranks of pursuivant and king-of-arms. ( entomology) A moth of the species Scoliopteryx libatrix.
a fire nozzle weighs approximately  ten to fifteen pounds.
For a given pressure the ideal gas law says that the density of a gas is inversely proportional to temperature, in Kelvin. You can use this fact, the temperature and density of air (300Â°K 1.3 kg/m 3), and the temperature of your average run-of-the-mill open flame (about 1300Â°K) to find the density of fire.o, since air (at sea level) weighs about 1.3 kg per cubic meter (1.3 grams per liter), fire weighs about 0.3 kg per cubic meter. One pound of ordinary fire, here on Earth near sea level, would take up a cube about 1.2 meters to a side.