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.
Both cellulose and fiberglass insulation provide about the same level of insulating power or r-value per inch with slightly different results based on the installation procedure. 1  Fiberglass Batt or Roll Insulation-R3.2. 2  Fiberglass Insulation Blown-in Attic-R2.2 - R4.3.3  Fiberglass Insulation Blown-in Wall-R3.7 - R4.3.n the world of insulation, seldom things are more heatedly debated than which type of insulation is better: fiberglass insulation or cellulose insulation. Both have their strengths and weaknesses, so let's see what all the fuss is about.