Ontology

Overview / Open Energy Ontology / Class - pi based unit

Label: pi based unit

Sub classes:

Definition:

"A dimensionless unit which denoted an irrational real number, approximately equal to 3.14159 which is the ratio of a circle's circumference to its diameter in Euclidean geometry." [Wikipedia:Wikipedia]

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dimensionless unit

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Definition:

"A unit which is a standard measure of physical quantity consisting of only a numerical number without any units." [Wikipedia:Wikipedia]