The pascal (symbol: Pa) is the SI derived unit of pressure used to quantify internal pressure, stress, Young's modulus and ultimate tensile strength. It is defined as one newton per square metre. It is named after the French polymath Blaise Pascal.
Phosphate Ester Fluids - Benefits and Limitations. Since the discovery of their excellent anti-wear and fire resistance properties in the 1940s, the use of phosphate esters by industry has steadily increased. Phosphate esters are used primarily as fire-resistant basestocks in several applications including hydraulic systems, turbines and compressors.
(Science: chemistry) A phosphate group on a larger molecule, where the phosphorus is single bonded to each of the four oxygen s, and the other bond of one of the oxygen s is attached to the rest of the molecule. phosphate group. A functional group important in energy trans fer. phospholipid s ...