Glossary P

The Environmental Glossary. Letter P +++ 'Peak power', 'Parallel connection', 'Petroleum'
A p-n junction is the junction at the interface between two differently doped layers of semiconductor material, one layer doped with a positive-type dopant, the other layer with a negative-type dopant.

A parallel (circles of latitude) is one of a group of abstract lines on the surface of the earth formed by the latitude and longitude coordinate system: parallels represent lines of equal latitude. 

A Parallel connection is Electrical connection where the positive terminals of a number of devices are connected together, as are their negative terminals.

Particulate Matter is a tiny (microscopic) matter in the atmosphere . It might be solid or liquid.

A Peak power is Power generated by a utility unit that operates at a very low capacity factor; generally used to meet short-lived and variable high demand periods.

The Peer Review is a documented in-depth critical examination of a proposed or actual product, generally beyond the state of the art or characterized by the existence of potential uncertainty, conducted by qualified individuals (or an organization) independent of those who performed the work but collectively equivalent in technical expertise to those who performed the original work.

German: Pro Kopf / Español: Per cápita  / Português: Per capita / Français: Per capita  / Italiano: Pro capite 

Per capita means Per person; generally used in expressions of water use, gallons Per capita per day (gpcd).

Per capita is a Latin prepositional phrase.

Performance Criteria are Measures of data quality that are used to judge the adequacy of collected information that is new or original, otherwise known as "primary data.”

The Performance Curve is the probability of deciding that the parameter of interest is greater than action level over the range of possible population parameters and which is used to assess the goodness of a test or to compare two competing tests; similar in concept to a statistical power curve

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