Basics of Refrigeration
Specific Gravity
Specific gravity (sp. gr.) is defined as the ratio of the weight of a certain volume of a substance as compar…
Specific gravity (sp. gr.) is defined as the ratio of the weight of a certain volume of a substance as compar…
Pressure is expressed in pounds per unit of area in inches of the static pressure of liquids. The most popula…
Comparative weights of solids and liquids may be expressed by either density or specific gravity. Density is …
A liquid is any physical substance that will assume the shape of its container, but which has the molecules s…
Substances exist in three physical forms. The solid, the liquid, and the gaseous. Water, for example, may exi…
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