Glossary F

The Environmental Glossary. Letter F +++ 'Finishing charge', 'Field Duplicate, Subsample', 'Finding'

Deutsch: Fruchtfolge / Español: Rotación de cultivos / Português: Rotação de culturas / Français: Rotation culturale -/ Italiano: Rotazione delle colture 

The term fallow may refer to any of the following:

A False Acceptance Decision Error is a result that occurs as a decision maker accepts the null hypothesis (baseline condition) when it is actually false; also can be referred to as a false negative decision error or a Type II error.

False Negative is the name of a result that occurs when the sample or environmental condition is reported not to contain an analyte, microorganism, etc., when the sample actually does.

A False Negative Decision Error is a result that occurs when the decision maker accepts the null hypothesis (baseline condition) when it is really false; also called a Type II error.

The False Positive is a result that occurs when a sample is reported to contain an analyte, microorganism, etc., when it actually does not contain the analyte.

A False Positive Decision Error is a result that occurs as a decision maker rejects the null hypothesis (baseline condition) when it is really true; also called a Type I error.

The False Rejection Decision Error is a result that occurs when a decision maker rejects the null hypothesis (baseline condition) when it is really true; also known as a Type I error. Occasionally may be called a false positive decision error.

Deutsch: Strahlregler / Italiano: Rompigetto 

faucet aerator (or tap aerator) is a device that can installed onto the tip of a modern indoor water faucet head, creating a non-splashing stream and possibly delivering a mixture of water and air.


Faucet aerators are often installed in order to:

  • prevent splashing
  • conserve water and reduce energy costs
  • increase perceived water pressure

Sometime the aerator is already included in the faucet. Then a Faucet aerator is a device that can be installed in a sink to reduce water use (Jensen, 1991).

A Feasibility Study is an evaluation of the practicality or viability of an idea.

A Feeder Pig Operation is the operation when the Breeder sells pigs out of the Nursery phase to grow them out to market weight.

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