(Q50098)

English

bel

logarithmic unit expressing the ratio of a physical quantity

B

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No label defined

No description defined

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Statements

instance of

logarithmic unit

0 references

non-SI unit mentioned in and accepted with the SI

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UCUM derived unit

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named after

Alexander Graham Bell

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discoverer or inventor

Bell Labs

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time of discovery or invention

1928

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unit symbol

B (English)

3 references

stated in

ISO 80000-1:2009 Quantities and units—Part 1: General

page(s)

21

section, verse, paragraph, or clause

6.5.6

stated in

ISO 80000-3:2006 Quantities and units — Part 3: Space and time

section, verse, paragraph, or clause

3-21.b

stated in

ISO 80000-3:2006 Quantities and units — Part 3: Space and time

section, verse, paragraph, or clause

3-22.b

Б (Russian)

0 references

defining formula

{\text{B}}={\frac {1}{2}}\cdot \ln {10}\cdot {\text{Np}}

1 reference

stated in

ISO 80000-1:2009 Quantities and units—Part 1: General

page(s)

21

section, verse, paragraph, or clause

6.5.6

B=\ln {\sqrt {10}}Np

2 references

stated in

ISO 80000-3:2006 Quantities and units — Part 3: Space and time

section, verse, paragraph, or clause

3-21.b

stated in

ISO 80000-3:2006 Quantities and units — Part 3: Space and time

section, verse, paragraph, or clause

3-22.b

described by source

ISO 80000-3:2006 Quantities and units — Part 3: Space and time

section, verse, paragraph, or clause

3-21.b

3-22.b

0 references

measured physical quantity

logarithmic quantity

1 reference

stated in

ISO 80000-1:2009 Quantities and units—Part 1: General

page(s)

21

section, verse, paragraph, or clause

6.5.6

level of a field quantity

1 reference

stated in

ISO 80000-3:2006 Quantities and units — Part 3: Space and time

section, verse, paragraph, or clause

3-21.b

level of a power quantity

1 reference

stated in

ISO 80000-3:2006 Quantities and units — Part 3: Space and time

section, verse, paragraph, or clause

3-22.b

maintained by WikiProject

WikiProject Mathematics

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subdivision of this unit

decibel

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Identifiers

Encyclopædia Britannica Online ID

science/bel-measurement

subject named as

bel

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Google Knowledge Graph ID

/g/121bj_b9

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IEV number

801-22-02

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Ontology of units of Measure 2.0 unit ID

bel

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QUDT unit ID

B

0 references

Store norske leksikon ID

bel

0 references

UCUM code

B

0 references

UN/CEFACT Common Code

M72

0 references

(Q50098)

bel

Statements

Identifiers

Sitelinks

Wikipedia(21 entries)

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