Institute of Electrical and Electronics Engineers (IEEE)
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ANSI/IEEE Std 280-1985
Scope
Letter symbols used to represent physical quantities in the field of electrical science and electrical engineering are defined. The symbols are independent of the units employed or special values assigned. Also included are selected symbols for mathematics and for physical constants.
ANSI/IEEE Std 280-1985 history
1984ANSI/IEEE Std 280-1985 IEEE Standard Letter Symbols for Quantities Used in Electrical Science and Electrical Engineering