Equation 5 · Part 1 · How Scientific Instruments and Metrology Actually Work
Symbol k_mathrm B
What this part means
athrm B is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Its job in the formula
athrm B is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Full expression→Symbol k_mathrm B→Article meaning
The passage around this formula
Fact: the GUM framework, and the -free equation above, applies to any measurement expressible as a function of quantifiable inputs; it makes no claim about which physical effects matter for a given instrument — that judgment is the analyst’s, and getting it wrong (omitting a real contributor, or including a negligible one to pad the budget) is the most common failure mode in practice, one NIST’s own technical note spends most of its length trying to prevent [ 3 ] .
Learn the underlying idea
A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.
Open the illustrated subscripts: which member of a family? guide →
See this notation across published equations →
Sources cited in the surrounding passage
These citations provide research context; check each source for the exact claim it supports.