From b65bc48801ea9cd87c3cdcd7cd6a6548a952cff0 Mon Sep 17 00:00:00 2001 From: Margaret O'Brien Date: Fri, 13 Jul 2018 15:25:04 -0700 Subject: [PATCH] added units from issues #140, #151, corrected a few copy-paste errors. Updated many definitions (based on wikipedia info) --- eml-unitDictionary.xml | 162 +++++++++++++++++++++++++---------------- 1 file changed, 98 insertions(+), 64 deletions(-) diff --git a/eml-unitDictionary.xml b/eml-unitDictionary.xml index c81ff425..ca1244d8 100644 --- a/eml-unitDictionary.xml +++ b/eml-unitDictionary.xml @@ -433,11 +433,12 @@ - SI unit of luminosity + SI base unit of luminous intensity (luminous power per unti solid angle emitted + by a point light source in a particular direction) - a number + a quantity or amount - one minute excluding leap seconds, 60 seconds + one minute of time excluding leap seconds, 60 seconds @@ -513,12 +514,15 @@ - metric ton or tonne + unit of mass equal to 1,000 kilograms, equivalent to approximately 2,204.6 + pounds,1.102 short tons (US) or 0.984 long tons (imperial). + Not part of the SI, but accepted for use with SI units and prefixes - 1 pound in the Avoirdupois (commerce) scale + 1 pound (symbol lb) in the Avoirdupois (commerce) scale, and defined + as exactly 0.45359237 kg. Also equal to 16 avoirdupois ounces and to 7,000 grains. @@ -533,7 +537,8 @@ - An obsolescent unit of temperature still used in popular meteorology + unit for temperature on the scale in which water freezes at 32 and boils + at 212 under standard conditions. @@ -584,7 +589,8 @@ - An imperial measure of length + unit of length in the (British) imperial and United States systems + usually understood as 1/12 f a foot. @@ -603,7 +609,8 @@ - nautical mile + defined as exactly 1,852 meters (6,076.1 ft; 1.1508 mi). Historically, + defined as one minute of latitude. @@ -762,7 +769,7 @@ - hertz + derived unit of frequency in the SI, defined as one cycle per second @@ -782,11 +789,12 @@ - 1 cal = 4.1868 J + unit of energy: amount of energy to raise the temperature of one gram of water + by one degree Celsius at a pressure of one atmosphere. cal = 4.1868 J - 1 btu = 1055.0559 J + an energy unit: 1 btu = 1055.0559 J @@ -795,173 +803,194 @@ - unit of energy density: = 41840 joule/m^2, = 1 calorie/cm^2 + unit of energy density = 41840 joule/m^2, = 1 calorie/cm^2 - lumen + SI unit for the total quantity of visible light in a defined beam or angle. + 1 lumen/m^2 = 1 lux. 1 lumen = 1 candela * steradian - lux + SI derived unit for illuminance, or luminous flux per unit area. 1 lx = 1 lm/m^2 = 1 cd * sr/m^2 - becquerel + SI derived unit of radioactivity. the activity of a quantity of radioactive material in which + one nucleus decays per second, and equivalent to an inverse second, s^-1. - gray + SI derived unit of ionizing radiation, defined as the absorption of one joule of + radiation energy per kilogram of matter (= 1 J/kg) - sievert + SI derived unit of ionizing radiation dose (health effect of low levels of ionizing + radiation on humans). 1 Sv = 100 rem (rem is an older, non-SI unit) - katal + derived SI unit for quantifying enzymatic activity.A property of the catalyst + (not rate of reaction), expressed in moles/second. - henry + SI derived unit for inductance; in SI base units: kg * m^2 * s^-2 * A^-2 - megawatt + unit of power, to quantify rate of energy transfer. 1 W = J/s - kilowatt + unit of power, to quantify rate of energy transfer. 1 W = J/s - watt = J/s + unit of power, to quantify rate of energy transfer. 1 W = J/s - milliwatt + unit of power, to quantify rate of energy transfer. 1 W = J/s - megavolt + Derived unit for electric potential, electric potential difference, + and electromotive force. 1 V = kg * m^2 * s^-3 * A^-1 - kilovolt + Derived unit for electric potential, electric potential difference, + and electromotive force. 1 V = kg * m^2 * s^-3 * A^-1 - volt + Derived unit for electric potential, electric potential difference, + and electromotive force. 1 V = kg * m^2 * s^-3 * A^-1 - millivolt + Derived unit for electric potential, electric potential difference, + and electromotive force. 1 V = kg * m^2 * s^-3 * A^-1 - farad + SI derived unit of electrical capacitance, the ability of a body to store an + electrical charge. 1 F = s^4 * A^2 *m^-2 * kg^-1 - ohm + an electrical resistance between two points of a conductor when a constant potential + difference of one volt, + applied to these points, produces in the conductor a current of one ampere - ohm meters + SI unit of electrical resistivity (fundamental property that quantifies how strongly a material + opposes the flow of electric current). reciprocal of electrical conductivity. - siemens per meter + SI unit for conductivity, measure of a material's ability to conduct an + electric current. - siemens per centimeter + SI unit for conductivity, measure of a material's ability to conduct an + electric current. - siemen + siemens - siemens + SI derived unit of electric conductance, susceptance and admittance + (reciprocals of resistance, reactance, and impedance respectively). One siemens is equal + to the reciprocal of one ohm (and also called "mho") - weber + the SI unit of magnetic flux - tesla + unit for flux density. 1 tesla = 1 Wb/m^2 (one weber per square meter). - pascal + SI derived unit of pressure, 1 pascal = 1 newton/m^2 - megapascal + SI derived unit of pressure, 1 pascal = 1 newton/m^2 - kilopascal + SI derived unit of pressure, 1 pascal = 1 newton/m^2 - + + SI derived unit of pressure, 1 pascal = 1 newton/m^2 + + - 1 atmosphere = 101325 pascals + unit of pressure defined as 101325 Pa (1.01325 bar), sometimes used as a + reference or standard pressure - 1 bar = 100000 pascals + non-SI unit for pressure (deprecated in some fields). 1 bar = 100000 Pa - millibar + non-SI unit for pressure (deprecated in some fields). 1 millibar = 1 hPa (100 Pa) - decibar - - - hectopascal + non-SI unit for pressure. 1 decibar = .1 bar. Decibars are commonly used in aquatic + environments because 1 db is approximately equal to depth in meters. + + @@ -982,6 +1011,7 @@ deprecatedInFavorOf="kilogramPerHectare" udunitsSynonym="kilogram/hectare"> kilograms per hectare + metric ton or tonne per hectare @@ -1026,7 +1056,7 @@ - micromoles per square meter per second + avoirdupois pounds per square inch @@ -1256,7 +1286,7 @@ - bushels per acre -- 1 bushel = 35.23907 liters/1 acre = 4046.8564 + bushels per acre, 1 bushel = 35.23907 liters/1 acre = 4046.8564 squareMeters - bushels per acre -- 1 bushel = 35.23907 liters/1 acre = 4046.8564 + bushels per acre, 1 bushel = 35.23907 liters/1 acre = 4046.8564 squareMeters - knot + unit of speed equal to one nautical mile per hour, exactly 1.852 km/hour @@ -1466,7 +1496,7 @@ - 1/meters + reciprocal of meter, or 1/meters @@ -1501,13 +1531,13 @@ - ampere per meter squared + ampere per meter squared, unit of current density - amperes per square meter + amperes per square meter, unit of current density @@ -1550,7 +1580,7 @@ - nanoomoles per liter + nanomoles per liter concentration of charge (on dissolved ions). conversions must know the name of the ion; a single multiplier to SI is not possible - concentration of charge (on dissolved ions). conversions must know the name of the ion; a single multiplier to SI is not possible @@ -1605,20 +1635,22 @@ - candela Per Square Meter + candela Per Square Meter (1 lux) - + candela Per Square Meter (1 lux) - meters squared per second + meters squared per second, SI unit for kinematic viscosity, specific relative + angular momentum and thermal diffusivity. The unit may be better understood when phrased + as "meter per second times meter" (velocity of an object with respect to a position). - square meters per second + meters squared per second, SI unit for kinematic viscosity, specific relative + angular momentum and thermal diffusivity. The unit may be better understood when phrased + as "meter per second times meter" (velocity of an object with respect to a position). @@ -1832,7 +1866,7 @@ - number per meter squared + number per meter squared, e.g., for a population density. @@ -2066,7 +2100,7 @@ udunitsSynonym="micromole/meter^2/second"> micromoles per square meter per second - micromoles per square centimeter per second @@ -2081,6 +2115,6 @@ - Langley (Ly) per day. Ly is a unit of energy density: = 41840 joule/m^2, = 1 calorie/cm^2 + Langley (Ly) per day. Ly is a unit of energy density = 41840 joule/m^2, = 1 calorie/cm^2