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Both sides previous revision Previous revision Next revision | Previous revision | ||
manual:chapter3:units [2019/09/18 16:30] jojo1973 [Multiples and Submultiples] |
manual:chapter3:units [2019/11/19 13:34] (current) claudio [Custom Units] |
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Multiples and submultiples of many units are obtained by prefixing them with the standard SI prefixes. Therefore, '' | Multiples and submultiples of many units are obtained by prefixing them with the standard SI prefixes. Therefore, '' | ||
- | There is only one exception: | + | SI prefixes can be used with all SI units and many non-SI units where SI prefixes are common usage. Other non-SI units do not accept prefixes. |
^ SI Prefix | ^ SI Prefix | ||
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Units in newRPL can be arbitrary symbols, not just the ones predefined in the system. For example, adding '' | Units in newRPL can be arbitrary symbols, not just the ones predefined in the system. For example, adding '' | ||
- | Custom units can also be defined as derived units, in terms of other base units. This is done with the '' | + | Custom units can also be defined as derived units, in terms of other base units. This is done with the '' |
- | New units can also be defined in terms of new (unknown) base units. For example typing '' | + | Custom units may also accept SI prefixes, but this needs to be explicitly enabled during the unit definition. To create a custom unit that accepts SI prefixes, the name of the unit needs to be preceded by a question mark ''?'' |
+ | |||
+ | New units can also be defined in terms of new (unknown) base units. For example typing '' | ||
From that moment the addition '' | From that moment the addition '' | ||
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==== Available Units ==== | ==== Available Units ==== | ||
- | This is a list of the units available in the '' | + | This is a list of the units available in the '' |
+ | |||
+ | === Length === | ||
- | | **Length** |||| | + | ^ Unit ^ Unit name ^ Definition |
- | | Unit | Unit name | Definition | + | | 1_m | metre | 1_m | Base SI unit of length |
- | | 1_m | metre | 1_m | Base SI unit of length | | + | | 1_cm | centimetre | 1_cm = 0.01_m | SI, metric | {{fa> |
- | | 1_cm | centimetre | 1_cm = 0.01_m | SI length | + | | 1_mm | millimetre | 1_mm = 0.001_m | SI, metric | {{fa> |
- | | 1_mm | millimetre | 1_mm = 0.001_m | SI length | + | | 1_yd | yard | 1_yd = 3_ft | US Customary | {{fa> |
- | | 1_yd | yard | 1_yd = 3_ft | US customary length | + | | 1_ft | foot | 1_ft = 12_in | US Customary | {{fa> |
- | | 1_ft | foot | 1_ft = 12_in | US customary length | + | | 1_in | inch | 1_in = 0.0254_m | US Customary | {{fa> |
- | | 1_in | inch | 1_in = 0.0254_m | US customary length | + | | 1_Mpc | megaparsec | 1_Mpc = 1000000_pc | Astronomical length |
- | | 1_Mpc | megaparsec | 1_Mpc = 1000000_pc | Astronomical length | | + | | 1_pc | parsec | 1_pc = (648000/ |
- | | 1_pc | parsec | 1_pc = (648000/ | + | | 1_lyr | light year | 1_lyr = 9460730472580800_m |
- | | 1_lyr | light year | 1_lyr = 365.25_d*c | + | | 1_au | astronomical unit | 1_au = 149597870700_m | SI astronomical length |
- | | 1_au | astronomical unit | 1_au = 149597870700_m | SI astronomical length | | + | | 1_km | kilometre | 1_km = 1000_m | SI, metric | {{fa> |
- | | 1_km | kilometre | 1_km = 1000_m | SI length | + | | 1_mi | mile | 1_mi = 5280_ft | US Customary | {{fa> |
- | | 1_mi | mile | 1_mi = 5280_ft | US customary length | + | | 1_nmi | nautical mile | 1_nmi = 1852_m | non-SI length |
- | | 1_nmi | nautical mile | 1_nmi = 1852_m | non-SI length | | + | | 1_miUS | surveying mile | 1_miUS = 5280_ftUS | US surveying length |
- | | 1_miUS | surveying mile | 1_miUS = 5280_ftUS | US surveying length | | + | | 1_chain | surveying chain | 1_chain = 66_ftUS | US surveying length |
- | | 1_chain | surveying chain | 1_chain = 66_ftUS | US surveying length | | + | | 1_rd | rod | 1_rd =16.5_ft | US customary length |
- | | 1_rd | rod | 1_rd =16.5_ft | US customary length | | + | | 1_rdUS | surveying rod | 1_rdUS =16.5_ftUS | US surveying length |
- | | 1_rdUS | surveying rod | 1_rdUS =16.5_ftUS | US surveying length | | + | | 1_fath | surveying fathom | 1_fath =6_ftUS | US surveying length |
- | | 1_fath | surveying fathom | 1_fath =6_ftUS | US surveying length | | + | | 1_ftUS | surveying foot | 1_ftUS = 1200/3937_m | US surveying length |
- | | 1_ftUS | surveying foot | 1_ftUS = 1200/3937_m | US surveying length | | + | | 1_mil | thousandth of inch | 1_mil = 0.001_in | US customary length |
- | | 1_mil | thousandth of inch | 1_mil = 0.001_in | US customary length | | + | | 1_µ | micron | 1_µ = 1_µm | SI length |
- | | 1_µ | micron | 1_µ = 1_µm | SI length | | + | | 1_Å | ångström | 1_Å = 0.1_nm | non-SI length |
- | | 1_Å | ångström | 1_Å = 0.1_nm | non-SI length | | + | | 1_fermi | fermi | 1_fermi = 1_fm | SI length |
- | | 1_fermi | fermi | 1_fermi = 1_fm | SI length | | + | |
| **Area** |||| | | **Area** |||| |