OpenMath Content Dictionary: SIUsed_OffSystemUnits1

Canonical URL:
http://www.openmath.org/cd/SIUsed_OffSystemUnits1.ocd
CD File:
SIUsed_OffSystemUnits1.ocd
CD as XML Encoded OpenMath:
SIUsed_OffSystemUnits1.omcd
Defines:
bel, day, degree-of-arc, hour, litre, minute, minute-of-arc, neper, second-of-arc, tonne
Date:
2009-01-10
Version:
1 (Revision 2)
Review Date:
2017-12-31
Status:
experimental


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Author: Joseph B. Collins (2009), Naval Research Laboratory, Washington, DC.
Copyright Notice:  This is a work of the U.S. Government and is not
subject to copyright protection in the United States. Foreign copyrights
may apply.

  Author: J B Collins

This CD defines symbols to represent units that are off-system with respect to the SI system of units, but are retained for use with the SI. (DRAFT INTERNATIONAL STANDARD ISO/DIS 80000-1 - "Quantities and units", 2008).


minute

Description:

This symbol represents the measure of one minute of time. It has the short symbol form, "min".

Commented Mathematical property (CMP):
1 minute = 60 seconds
Formal Mathematical property (FMP):
1 minute = 60 second
Signatures:
sts


[Next: hour] [Last: bel] [Top]

hour

Description:

This symbol represents the measure of one hour of time. It has the short symbol form, "h".

Commented Mathematical property (CMP):
1 hour = 60 minute
Formal Mathematical property (FMP):
1 hour = 60 minute
Signatures:
sts


[Next: day] [Previous: minute] [Top]

day

Description:

This symbol represents the measure of one day of time. It has the short symbol form, "d".

Commented Mathematical property (CMP):
1 day = 24 hour
Formal Mathematical property (FMP):
1 day = 24 hour
Signatures:
sts


[Next: degree-of-arc] [Previous: hour] [Top]

degree-of-arc

Description:

This symbol represents the angular measure of one degree of arc. It has the short symbol form of the degree symbol, a superscript circle, Unicode: U+00B0 or HTML: °.

Commented Mathematical property (CMP):
1 degree-of-arc = pi/180 radian
Formal Mathematical property (FMP):
1 degree-of-arc = π 180 radian
Signatures:
sts


[Next: minute-of-arc] [Previous: day] [Top]

minute-of-arc

Description:

This symbol represents the angular measure of one minute of arc. It has the short symbol form, "'".

Commented Mathematical property (CMP):
1 minute-of-arc = 1/60 degree-of-arc
Formal Mathematical property (FMP):
1 minute-of-arc = degree-of-arc 60
Signatures:
sts


[Next: second-of-arc] [Previous: degree-of-arc] [Top]

second-of-arc

Description:

This symbol represents the angular measure of one second-of-arc. It has the short symbol form, '"'.

Commented Mathematical property (CMP):
1 second-of-arc = 1/60 minute-of-arc
Formal Mathematical property (FMP):
1 second-of-arc = minute-of-arc 60
Signatures:
sts


[Next: litre] [Previous: minute-of-arc] [Top]

litre

Description:

This symbol represents the volume measure of one litre. It has the short symbol form, "l" or "L".

Commented Mathematical property (CMP):
1 litre = 1 decimetre^3
Formal Mathematical property (FMP):
1 litre = ( deci × metre ) 3
Signatures:
sts


[Next: tonne] [Previous: second-of-arc] [Top]

tonne

Description:

This symbol represents the mass measure of one tonne. It has the short symbol form, "t".

Commented Mathematical property (CMP):
1 tonne = 1000 kilogram
Formal Mathematical property (FMP):
1 tonne = 1000 kilogram
Signatures:
sts


[Next: neper] [Previous: litre] [Top]

neper

Description:

This symbol represents the dimensionless measure of one neper, the natural unit for representing logarithms of ratios of field amplitudes, such as voltage or pressure. It has the short symbol form, "Np".

Commented Mathematical property (CMP):
1 neper = ln(e) = 1
Formal Mathematical property (FMP):
1 neper = log e e = 1
Signatures:
sts


[Next: bel] [Previous: tonne] [Top]

bel

Description:

This symbol represents the dimensionless measure of one bel. It has the short symbol form, "B".

Commented Mathematical property (CMP):
1 bel = (ln(10))/2 neper
Formal Mathematical property (FMP):
1 bel = log e 10 2 neper
Signatures:
sts


[First: minute] [Previous: neper] [Top]