DefinitionA <BEL> is a <PropertyQuantification> between a <RATIO> and a <NUMBER SPACE OF -INF TO +INF>; it is a unit for comparing two power levels, equal to the logarithm to the base ten of the ratio of the two powers
ISO 80000-14:2008 14-5.19.a
ISO 80000-3:2006 3-21.b
ISO 80000-3:2006 3-22.b
ISO 80000-8:2007 8-22.a
ISO 80000-8:2007 8-23.a
ISO 80000-8:2007 8-24.a
ISO 80000-8:2007 8-27.a
