Igneous Rock is formed when a magma cools underground and crystallizes or when it erupts unto the surface of the ground, cools and crystallizes. Magma that erupts onto the surface is called lava. When magma cools slowly underground the crystals are large enough to see.
Readings for compression tests usually vary between 175 to 250 PSI (Pounds per Square Inch). A higher reading generally indicates better engine performance; however you should check your vehicle manual to find out what the ideal reading should be for your vehicle.
The power consumption for the liquefaction option at 800 psia is 94.7% of the compression option, but the absolute value of the power consumption difference between compression and liquefaction from 800 psia to 2,215 psia is only 255 hp, as shown in Table 2.