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Annotation of coherent/a/usr/man/COHERENT/units, revision 1.1

1.1     ! root        1: 
        !             2: 
        !             3: units                        Command                        units
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        !             8: Convert measurements
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        !            10: uunniittss [ -uu ]
        !            11: 
        !            12: units is an interactive program that tells you how to convert one
        !            13: unit of  measurement into another.  It prompts  you for two quan-
        !            14: tities  with  the  same  dimensions  (e.g., two  measurements  of
        !            15: weight,  or  two of  size).   It first  prints  the prompt  ``You
        !            16: have:'' to  ask for the unit  you wish to convert  from, and then
        !            17: prints the prompt ``You want:''  for the unit you wish to convert
        !            18: to.
        !            19: 
        !            20: ***** Example *****
        !            21: 
        !            22: The following example  returns the formula for convert fortnights
        !            23: into days:
        !            24: 
        !            25: 
        !            26:         You have: fortnight
        !            27:         You want: days
        !            28:         * 14
        !            29:         / 0.071428
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        !            31: 
        !            32: The  following  fundamental units  are  recognized: meter,  gram,
        !            33: second, coulomb, radian,  bit, unitedstatesdollar, sheet, candle,
        !            34: kelvin, and copperpiece (shillings and pence).
        !            35: 
        !            36: A  quantity consists  of  an optional  number (default  1) and  a
        !            37: dimension  (default  none).   Numbers  are  floating  point  with
        !            38: optional  sign, decimal  part  and exponent.   Dimensions may  be
        !            39: specified by fundamental  or derived units, with optional orders.
        !            40: A quantity is evaluated left to right: a factor preceded by a `/'
        !            41: is a  divisor, otherwise  it is  a multiplier.  For  example, the
        !            42: earth's gravitational  acceleration may be entered  as any of the
        !            43: following:
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        !            45: 
        !            46:         9.8e+0 m+1 sec-2
        !            47:         32 ft/sec/sec
        !            48:         32 ft/sec+2
        !            49: 
        !            50: 
        !            51: British  equivalents  of  US units  are  prefixed  with br,  e.g.
        !            52: brpint.  Some other units include c (speed of light), G (gravita-
        !            53: tional  constant), R  (gas law constant),  phi (golden  ratio), %
        !            54: (1/100), k (1,024), and buck (United States dollar).
        !            55: 
        !            56: /usr/lib/units is an  ASCII file that contains conversion tables.
        !            57: The binary  file /usr/lib/binunits may be  recreated by using the
        !            58: -u option.
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        !            63: 
        !            64: COHERENT Lexicon                                           Page 1
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        !            68: 
        !            69: units                        Command                        units
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        !            72: 
        !            73: ***** See Also *****
        !            74: 
        !            75:  bc, commands, conv
        !            76: 
        !            77: ***** Files *****
        !            78: 
        !            79: /uussrr/lliibb/uunniittss -- Known units
        !            80: /uussrr/lliibb/bbiinnuunniittss -- Binary encoding of units file
        !            81: 
        !            82: ***** Diagnostics *****
        !            83: 
        !            84: If the  ASCII file /usr/lib/units has  been changed more recently
        !            85: that the  binary file  /usr/lib/binunits, units prints  a message
        !            86: and regenerates the  binary file before continuing; this takes up
        !            87: to a few minutes, depending on the speed of your system.
        !            88: 
        !            89: The  error message ``conformability''  means that  the quantities
        !            90: are not  dimensionally compatible.   For example, m/sec  and psi.
        !            91: units  prints each  quantity  and its  dimensions in  fundamental
        !            92: units.
        !            93: 
        !            94: ***** Notes *****
        !            95: 
        !            96: There are the inevitable name collisions: g for gram vs.  gee for
        !            97: Earth's gravitational  acceleration, exp for the  base of natural
        !            98: logarithms vs.  e for the  charge of an electron, ms for (plural)
        !            99: meters  vs.  millisecond,  and of course  batman for  the Persian
        !           100: measure of weight rather than the Turkish.
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        !           130: COHERENT Lexicon                                           Page 2
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