It contains minerals such as pyroxene, amphibole, feldspar and 63-68 percent silica. The eruption temperature for dacitic lava is 1,500 to 1,800 degrees Fahrenheit. Dacitic to rhyolitic lava is so dangerous because it contains a high amount of crystals.Mt. Vesuvius erupts according to the Plinian model of eruption.
Foil has low emissivity, so will greatly reduce radiative heat transfer (act like insulation). It should face the side that is supposed to be cooler. But foil will not reduce conductive heat transfer, so it must be used judiciously with something that reduces conduction.
Reflective Foil Insulation. The terms reflective insulation, foil insulation, and radiant barrier are often used interchangeably. While insulation such as cellulose or fiberglass insulation slows down heat transfer, only a radiant barrier such as EcoFoil reflective insulation stops radiant heat gain / loss.iberglass and cellulose insulation slow down radiant heat, but only a reflective insulation such as EcoFoil reflective insulation stops up to 96% of radiant heat.