Bring a large pot of water to just to a boil. You want enough water to comfortably hold all the shrimp. There should be about 1 to 2 inches (2.5 to 5.1 cm) more water than there is shrimp.
The amount depends on the type of mineral. A large group of minerals  the opaque minerals  do not transmit significant light, even in thin section. These minerals do, however , reflect light back that can tell us a great deal about their identity and origin. These minerals typically have significant metallic bonding (e.g., native elements, sulfides, oxides).
Safety or tempered flat glass is obtained by a heating treatment, that implies heating the glass to a temperature somewhat lower than its softening point and then quenched by jets of cold air. Mass colored Glass: during its manufacturing process small amounts of metal oxides have been added to the mixture of float glass. 2  This provides a distinctive color to the glass without affecting the basic properties of glass, with the exception of some changes in the transmission of solar energy.