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.
Installing quality insulation is the best thing you can do to improve the energy efficiency of your home. Over time it can save you bundles in heating and cooling costs. The most effective insulation today is generally considered to be spray-foam insulation. There is a healthy debate as to which type of foamâopen-cell or closed-cellâis better, but there is one thing everyone can agree on: all spray foam is expensive.