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from .unit_definitions import (
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percent, percents,
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permille,
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rad, radian, radians,
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deg, degree, degrees,
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sr, steradian, steradians,
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mil, angular_mil, angular_mils,
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m, meter, meters,
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kg, kilogram, kilograms,
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s, second, seconds,
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A, ampere, amperes,
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K, kelvin, kelvins,
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mol, mole, moles,
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cd, candela, candelas,
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g, gram, grams,
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mg, milligram, milligrams,
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ug, microgram, micrograms,
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t, tonne, metric_ton,
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newton, newtons, N,
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joule, joules, J,
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watt, watts, W,
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pascal, pascals, Pa, pa,
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hertz, hz, Hz,
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coulomb, coulombs, C,
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volt, volts, v, V,
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ohm, ohms,
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siemens, S, mho, mhos,
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farad, farads, F,
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henry, henrys, H,
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tesla, teslas, T,
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weber, webers, Wb, wb,
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optical_power, dioptre, D,
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lux, lx,
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katal, kat,
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gray, Gy,
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becquerel, Bq,
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km, kilometer, kilometers,
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dm, decimeter, decimeters,
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cm, centimeter, centimeters,
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mm, millimeter, millimeters,
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um, micrometer, micrometers, micron, microns,
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nm, nanometer, nanometers,
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pm, picometer, picometers,
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ft, foot, feet,
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inch, inches,
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yd, yard, yards,
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mi, mile, miles,
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nmi, nautical_mile, nautical_miles,
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ha, hectare,
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l, L, liter, liters,
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dl, dL, deciliter, deciliters,
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cl, cL, centiliter, centiliters,
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ml, mL, milliliter, milliliters,
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ms, millisecond, milliseconds,
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us, microsecond, microseconds,
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ns, nanosecond, nanoseconds,
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ps, picosecond, picoseconds,
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minute, minutes,
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h, hour, hours,
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day, days,
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anomalistic_year, anomalistic_years,
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sidereal_year, sidereal_years,
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tropical_year, tropical_years,
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common_year, common_years,
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julian_year, julian_years,
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draconic_year, draconic_years,
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gaussian_year, gaussian_years,
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full_moon_cycle, full_moon_cycles,
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year, years,
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G, gravitational_constant,
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c, speed_of_light,
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elementary_charge,
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hbar,
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planck,
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eV, electronvolt, electronvolts,
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avogadro_number,
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avogadro, avogadro_constant,
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boltzmann, boltzmann_constant,
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stefan, stefan_boltzmann_constant,
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R, molar_gas_constant,
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faraday_constant,
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josephson_constant,
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von_klitzing_constant,
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Da, dalton, amu, amus, atomic_mass_unit, atomic_mass_constant,
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me, electron_rest_mass,
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gee, gees, acceleration_due_to_gravity,
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u0, magnetic_constant, vacuum_permeability,
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e0, electric_constant, vacuum_permittivity,
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Z0, vacuum_impedance,
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coulomb_constant, coulombs_constant, electric_force_constant,
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atmosphere, atmospheres, atm,
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kPa, kilopascal,
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bar, bars,
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pound, pounds,
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psi,
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dHg0,
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mmHg, torr,
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mmu, mmus, milli_mass_unit,
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quart, quarts,
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angstrom, angstroms,
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ly, lightyear, lightyears,
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au, astronomical_unit, astronomical_units,
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planck_mass,
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planck_time,
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planck_temperature,
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planck_length,
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planck_charge,
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planck_area,
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planck_volume,
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planck_momentum,
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planck_energy,
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planck_force,
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planck_power,
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planck_density,
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planck_energy_density,
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planck_intensity,
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planck_angular_frequency,
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planck_pressure,
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planck_current,
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planck_voltage,
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planck_impedance,
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planck_acceleration,
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bit, bits,
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byte,
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kibibyte, kibibytes,
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mebibyte, mebibytes,
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gibibyte, gibibytes,
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tebibyte, tebibytes,
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pebibyte, pebibytes,
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exbibyte, exbibytes,
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curie, rutherford
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)
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__all__ = [
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'percent', 'percents',
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'permille',
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'rad', 'radian', 'radians',
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'deg', 'degree', 'degrees',
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'sr', 'steradian', 'steradians',
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'mil', 'angular_mil', 'angular_mils',
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'm', 'meter', 'meters',
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'kg', 'kilogram', 'kilograms',
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's', 'second', 'seconds',
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'A', 'ampere', 'amperes',
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'K', 'kelvin', 'kelvins',
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'mol', 'mole', 'moles',
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'cd', 'candela', 'candelas',
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'g', 'gram', 'grams',
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'mg', 'milligram', 'milligrams',
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'ug', 'microgram', 'micrograms',
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't', 'tonne', 'metric_ton',
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'newton', 'newtons', 'N',
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'joule', 'joules', 'J',
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'watt', 'watts', 'W',
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'pascal', 'pascals', 'Pa', 'pa',
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'hertz', 'hz', 'Hz',
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'coulomb', 'coulombs', 'C',
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'volt', 'volts', 'v', 'V',
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'ohm', 'ohms',
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'siemens', 'S', 'mho', 'mhos',
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'farad', 'farads', 'F',
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'henry', 'henrys', 'H',
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'tesla', 'teslas', 'T',
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'weber', 'webers', 'Wb', 'wb',
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'optical_power', 'dioptre', 'D',
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'lux', 'lx',
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'katal', 'kat',
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'gray', 'Gy',
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'becquerel', 'Bq',
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'km', 'kilometer', 'kilometers',
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'dm', 'decimeter', 'decimeters',
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'cm', 'centimeter', 'centimeters',
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'mm', 'millimeter', 'millimeters',
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'um', 'micrometer', 'micrometers', 'micron', 'microns',
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'nm', 'nanometer', 'nanometers',
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'pm', 'picometer', 'picometers',
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'ft', 'foot', 'feet',
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'inch', 'inches',
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'yd', 'yard', 'yards',
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'mi', 'mile', 'miles',
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'nmi', 'nautical_mile', 'nautical_miles',
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'ha', 'hectare',
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'l', 'L', 'liter', 'liters',
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'dl', 'dL', 'deciliter', 'deciliters',
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'cl', 'cL', 'centiliter', 'centiliters',
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'ml', 'mL', 'milliliter', 'milliliters',
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'ms', 'millisecond', 'milliseconds',
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'us', 'microsecond', 'microseconds',
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'ns', 'nanosecond', 'nanoseconds',
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'ps', 'picosecond', 'picoseconds',
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'minute', 'minutes',
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'h', 'hour', 'hours',
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'day', 'days',
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'anomalistic_year', 'anomalistic_years',
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'sidereal_year', 'sidereal_years',
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'tropical_year', 'tropical_years',
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'common_year', 'common_years',
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'julian_year', 'julian_years',
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'draconic_year', 'draconic_years',
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'gaussian_year', 'gaussian_years',
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'full_moon_cycle', 'full_moon_cycles',
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'year', 'years',
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'G', 'gravitational_constant',
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'c', 'speed_of_light',
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'elementary_charge',
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'hbar',
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'planck',
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'eV', 'electronvolt', 'electronvolts',
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'avogadro_number',
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'avogadro', 'avogadro_constant',
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'boltzmann', 'boltzmann_constant',
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'stefan', 'stefan_boltzmann_constant',
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'R', 'molar_gas_constant',
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'faraday_constant',
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'josephson_constant',
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'von_klitzing_constant',
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'Da', 'dalton', 'amu', 'amus', 'atomic_mass_unit', 'atomic_mass_constant',
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'me', 'electron_rest_mass',
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'gee', 'gees', 'acceleration_due_to_gravity',
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'u0', 'magnetic_constant', 'vacuum_permeability',
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'e0', 'electric_constant', 'vacuum_permittivity',
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'Z0', 'vacuum_impedance',
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'coulomb_constant', 'coulombs_constant', 'electric_force_constant',
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'atmosphere', 'atmospheres', 'atm',
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'kPa', 'kilopascal',
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'bar', 'bars',
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'pound', 'pounds',
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'psi',
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'dHg0',
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'mmHg', 'torr',
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'mmu', 'mmus', 'milli_mass_unit',
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'quart', 'quarts',
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'angstrom', 'angstroms',
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'ly', 'lightyear', 'lightyears',
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'au', 'astronomical_unit', 'astronomical_units',
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'planck_mass',
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'planck_time',
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'planck_temperature',
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'planck_length',
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'planck_charge',
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'planck_area',
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'planck_volume',
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'planck_momentum',
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'planck_energy',
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'planck_force',
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'planck_power',
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'planck_density',
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'planck_energy_density',
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'planck_intensity',
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'planck_angular_frequency',
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'planck_pressure',
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'planck_current',
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'planck_voltage',
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'planck_impedance',
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'planck_acceleration',
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'bit', 'bits',
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'byte',
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'kibibyte', 'kibibytes',
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'mebibyte', 'mebibytes',
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'gibibyte', 'gibibytes',
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'tebibyte', 'tebibytes',
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'pebibyte', 'pebibytes',
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'exbibyte', 'exbibytes',
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'curie', 'rutherford',
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]
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from sympy.physics.units import Dimension
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angle: Dimension = Dimension(name="angle")
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# base dimensions (MKS)
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length = Dimension(name="length", symbol="L")
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mass = Dimension(name="mass", symbol="M")
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time = Dimension(name="time", symbol="T")
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# base dimensions (MKSA not in MKS)
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current: Dimension = Dimension(name='current', symbol='I')
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# other base dimensions:
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temperature: Dimension = Dimension("temperature", "T")
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amount_of_substance: Dimension = Dimension("amount_of_substance")
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luminous_intensity: Dimension = Dimension("luminous_intensity")
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# derived dimensions (MKS)
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velocity = Dimension(name="velocity")
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acceleration = Dimension(name="acceleration")
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momentum = Dimension(name="momentum")
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force = Dimension(name="force", symbol="F")
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energy = Dimension(name="energy", symbol="E")
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power = Dimension(name="power")
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pressure = Dimension(name="pressure")
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frequency = Dimension(name="frequency", symbol="f")
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action = Dimension(name="action", symbol="A")
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area = Dimension("area")
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volume = Dimension("volume")
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# derived dimensions (MKSA not in MKS)
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voltage: Dimension = Dimension(name='voltage', symbol='U')
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impedance: Dimension = Dimension(name='impedance', symbol='Z')
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conductance: Dimension = Dimension(name='conductance', symbol='G')
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capacitance: Dimension = Dimension(name='capacitance')
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inductance: Dimension = Dimension(name='inductance')
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charge: Dimension = Dimension(name='charge', symbol='Q')
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magnetic_density: Dimension = Dimension(name='magnetic_density', symbol='B')
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magnetic_flux: Dimension = Dimension(name='magnetic_flux')
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# Dimensions in information theory:
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information: Dimension = Dimension(name='information')
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@@ -0,0 +1,407 @@
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from sympy.physics.units.definitions.dimension_definitions import current, temperature, amount_of_substance, \
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luminous_intensity, angle, charge, voltage, impedance, conductance, capacitance, inductance, magnetic_density, \
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magnetic_flux, information
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from sympy.core.numbers import (Rational, pi)
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from sympy.core.singleton import S as S_singleton
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from sympy.physics.units.prefixes import kilo, mega, milli, micro, deci, centi, nano, pico, kibi, mebi, gibi, tebi, pebi, exbi
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from sympy.physics.units.quantities import PhysicalConstant, Quantity
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One = S_singleton.One
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#### UNITS ####
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# Dimensionless:
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percent = percents = Quantity("percent", latex_repr=r"\%")
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percent.set_global_relative_scale_factor(Rational(1, 100), One)
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permille = Quantity("permille")
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permille.set_global_relative_scale_factor(Rational(1, 1000), One)
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# Angular units (dimensionless)
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rad = radian = radians = Quantity("radian", abbrev="rad")
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radian.set_global_dimension(angle)
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deg = degree = degrees = Quantity("degree", abbrev="deg", latex_repr=r"^\circ")
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degree.set_global_relative_scale_factor(pi/180, radian)
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sr = steradian = steradians = Quantity("steradian", abbrev="sr")
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mil = angular_mil = angular_mils = Quantity("angular_mil", abbrev="mil")
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# Base units:
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m = meter = meters = Quantity("meter", abbrev="m")
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# gram; used to define its prefixed units
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g = gram = grams = Quantity("gram", abbrev="g")
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# NOTE: the `kilogram` has scale factor 1000. In SI, kg is a base unit, but
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# nonetheless we are trying to be compatible with the `kilo` prefix. In a
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# similar manner, people using CGS or gaussian units could argue that the
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# `centimeter` rather than `meter` is the fundamental unit for length, but the
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# scale factor of `centimeter` will be kept as 1/100 to be compatible with the
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# `centi` prefix. The current state of the code assumes SI unit dimensions, in
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# the future this module will be modified in order to be unit system-neutral
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# (that is, support all kinds of unit systems).
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kg = kilogram = kilograms = Quantity("kilogram", abbrev="kg")
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kg.set_global_relative_scale_factor(kilo, gram)
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s = second = seconds = Quantity("second", abbrev="s")
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A = ampere = amperes = Quantity("ampere", abbrev='A')
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ampere.set_global_dimension(current)
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K = kelvin = kelvins = Quantity("kelvin", abbrev='K')
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||||
kelvin.set_global_dimension(temperature)
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mol = mole = moles = Quantity("mole", abbrev="mol")
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||||
mole.set_global_dimension(amount_of_substance)
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cd = candela = candelas = Quantity("candela", abbrev="cd")
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candela.set_global_dimension(luminous_intensity)
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||||
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# derived units
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||||
newton = newtons = N = Quantity("newton", abbrev="N")
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||||
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kilonewton = kilonewtons = kN = Quantity("kilonewton", abbrev="kN")
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kilonewton.set_global_relative_scale_factor(kilo, newton)
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meganewton = meganewtons = MN = Quantity("meganewton", abbrev="MN")
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meganewton.set_global_relative_scale_factor(mega, newton)
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||||
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||||
joule = joules = J = Quantity("joule", abbrev="J")
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||||
watt = watts = W = Quantity("watt", abbrev="W")
|
||||
pascal = pascals = Pa = pa = Quantity("pascal", abbrev="Pa")
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||||
hertz = hz = Hz = Quantity("hertz", abbrev="Hz")
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||||
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# CGS derived units:
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dyne = Quantity("dyne")
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dyne.set_global_relative_scale_factor(One/10**5, newton)
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||||
erg = Quantity("erg")
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||||
erg.set_global_relative_scale_factor(One/10**7, joule)
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||||
# MKSA extension to MKS: derived units
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||||
coulomb = coulombs = C = Quantity("coulomb", abbrev='C')
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coulomb.set_global_dimension(charge)
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||||
volt = volts = v = V = Quantity("volt", abbrev='V')
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||||
volt.set_global_dimension(voltage)
|
||||
ohm = ohms = Quantity("ohm", abbrev='ohm', latex_repr=r"\Omega")
|
||||
ohm.set_global_dimension(impedance)
|
||||
siemens = S = mho = mhos = Quantity("siemens", abbrev='S')
|
||||
siemens.set_global_dimension(conductance)
|
||||
farad = farads = F = Quantity("farad", abbrev='F')
|
||||
farad.set_global_dimension(capacitance)
|
||||
henry = henrys = H = Quantity("henry", abbrev='H')
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||||
henry.set_global_dimension(inductance)
|
||||
tesla = teslas = T = Quantity("tesla", abbrev='T')
|
||||
tesla.set_global_dimension(magnetic_density)
|
||||
weber = webers = Wb = wb = Quantity("weber", abbrev='Wb')
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||||
weber.set_global_dimension(magnetic_flux)
|
||||
|
||||
# CGS units for electromagnetic quantities:
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||||
statampere = Quantity("statampere")
|
||||
statcoulomb = statC = franklin = Quantity("statcoulomb", abbrev="statC")
|
||||
statvolt = Quantity("statvolt")
|
||||
gauss = Quantity("gauss")
|
||||
maxwell = Quantity("maxwell")
|
||||
debye = Quantity("debye")
|
||||
oersted = Quantity("oersted")
|
||||
|
||||
# Other derived units:
|
||||
optical_power = dioptre = diopter = D = Quantity("dioptre")
|
||||
lux = lx = Quantity("lux", abbrev="lx")
|
||||
|
||||
# katal is the SI unit of catalytic activity
|
||||
katal = kat = Quantity("katal", abbrev="kat")
|
||||
|
||||
# gray is the SI unit of absorbed dose
|
||||
gray = Gy = Quantity("gray")
|
||||
|
||||
# becquerel is the SI unit of radioactivity
|
||||
becquerel = Bq = Quantity("becquerel", abbrev="Bq")
|
||||
|
||||
|
||||
# Common mass units
|
||||
|
||||
mg = milligram = milligrams = Quantity("milligram", abbrev="mg")
|
||||
mg.set_global_relative_scale_factor(milli, gram)
|
||||
|
||||
ug = microgram = micrograms = Quantity("microgram", abbrev="ug", latex_repr=r"\mu\text{g}")
|
||||
ug.set_global_relative_scale_factor(micro, gram)
|
||||
|
||||
# Atomic mass constant
|
||||
Da = dalton = amu = amus = atomic_mass_unit = atomic_mass_constant = PhysicalConstant("atomic_mass_constant")
|
||||
|
||||
t = metric_ton = tonne = Quantity("tonne", abbrev="t")
|
||||
tonne.set_global_relative_scale_factor(mega, gram)
|
||||
|
||||
# Electron rest mass
|
||||
me = electron_rest_mass = Quantity("electron_rest_mass", abbrev="me")
|
||||
|
||||
|
||||
# Common length units
|
||||
|
||||
km = kilometer = kilometers = Quantity("kilometer", abbrev="km")
|
||||
km.set_global_relative_scale_factor(kilo, meter)
|
||||
|
||||
dm = decimeter = decimeters = Quantity("decimeter", abbrev="dm")
|
||||
dm.set_global_relative_scale_factor(deci, meter)
|
||||
|
||||
cm = centimeter = centimeters = Quantity("centimeter", abbrev="cm")
|
||||
cm.set_global_relative_scale_factor(centi, meter)
|
||||
|
||||
mm = millimeter = millimeters = Quantity("millimeter", abbrev="mm")
|
||||
mm.set_global_relative_scale_factor(milli, meter)
|
||||
|
||||
um = micrometer = micrometers = micron = microns = \
|
||||
Quantity("micrometer", abbrev="um", latex_repr=r'\mu\text{m}')
|
||||
um.set_global_relative_scale_factor(micro, meter)
|
||||
|
||||
nm = nanometer = nanometers = Quantity("nanometer", abbrev="nm")
|
||||
nm.set_global_relative_scale_factor(nano, meter)
|
||||
|
||||
pm = picometer = picometers = Quantity("picometer", abbrev="pm")
|
||||
pm.set_global_relative_scale_factor(pico, meter)
|
||||
|
||||
ft = foot = feet = Quantity("foot", abbrev="ft")
|
||||
ft.set_global_relative_scale_factor(Rational(3048, 10000), meter)
|
||||
|
||||
inch = inches = Quantity("inch")
|
||||
inch.set_global_relative_scale_factor(Rational(1, 12), foot)
|
||||
|
||||
yd = yard = yards = Quantity("yard", abbrev="yd")
|
||||
yd.set_global_relative_scale_factor(3, feet)
|
||||
|
||||
mi = mile = miles = Quantity("mile")
|
||||
mi.set_global_relative_scale_factor(5280, feet)
|
||||
|
||||
nmi = nautical_mile = nautical_miles = Quantity("nautical_mile")
|
||||
nmi.set_global_relative_scale_factor(6076, feet)
|
||||
|
||||
angstrom = angstroms = Quantity("angstrom", latex_repr=r'\r{A}')
|
||||
angstrom.set_global_relative_scale_factor(Rational(1, 10**10), meter)
|
||||
|
||||
|
||||
# Common volume and area units
|
||||
|
||||
ha = hectare = Quantity("hectare", abbrev="ha")
|
||||
|
||||
l = L = liter = liters = Quantity("liter", abbrev="l")
|
||||
|
||||
dl = dL = deciliter = deciliters = Quantity("deciliter", abbrev="dl")
|
||||
dl.set_global_relative_scale_factor(Rational(1, 10), liter)
|
||||
|
||||
cl = cL = centiliter = centiliters = Quantity("centiliter", abbrev="cl")
|
||||
cl.set_global_relative_scale_factor(Rational(1, 100), liter)
|
||||
|
||||
ml = mL = milliliter = milliliters = Quantity("milliliter", abbrev="ml")
|
||||
ml.set_global_relative_scale_factor(Rational(1, 1000), liter)
|
||||
|
||||
|
||||
# Common time units
|
||||
|
||||
ms = millisecond = milliseconds = Quantity("millisecond", abbrev="ms")
|
||||
millisecond.set_global_relative_scale_factor(milli, second)
|
||||
|
||||
us = microsecond = microseconds = Quantity("microsecond", abbrev="us", latex_repr=r'\mu\text{s}')
|
||||
microsecond.set_global_relative_scale_factor(micro, second)
|
||||
|
||||
ns = nanosecond = nanoseconds = Quantity("nanosecond", abbrev="ns")
|
||||
nanosecond.set_global_relative_scale_factor(nano, second)
|
||||
|
||||
ps = picosecond = picoseconds = Quantity("picosecond", abbrev="ps")
|
||||
picosecond.set_global_relative_scale_factor(pico, second)
|
||||
|
||||
minute = minutes = Quantity("minute")
|
||||
minute.set_global_relative_scale_factor(60, second)
|
||||
|
||||
h = hour = hours = Quantity("hour")
|
||||
hour.set_global_relative_scale_factor(60, minute)
|
||||
|
||||
day = days = Quantity("day")
|
||||
day.set_global_relative_scale_factor(24, hour)
|
||||
|
||||
anomalistic_year = anomalistic_years = Quantity("anomalistic_year")
|
||||
anomalistic_year.set_global_relative_scale_factor(365.259636, day)
|
||||
|
||||
sidereal_year = sidereal_years = Quantity("sidereal_year")
|
||||
sidereal_year.set_global_relative_scale_factor(31558149.540, seconds)
|
||||
|
||||
tropical_year = tropical_years = Quantity("tropical_year")
|
||||
tropical_year.set_global_relative_scale_factor(365.24219, day)
|
||||
|
||||
common_year = common_years = Quantity("common_year")
|
||||
common_year.set_global_relative_scale_factor(365, day)
|
||||
|
||||
julian_year = julian_years = Quantity("julian_year")
|
||||
julian_year.set_global_relative_scale_factor((365 + One/4), day)
|
||||
|
||||
draconic_year = draconic_years = Quantity("draconic_year")
|
||||
draconic_year.set_global_relative_scale_factor(346.62, day)
|
||||
|
||||
gaussian_year = gaussian_years = Quantity("gaussian_year")
|
||||
gaussian_year.set_global_relative_scale_factor(365.2568983, day)
|
||||
|
||||
full_moon_cycle = full_moon_cycles = Quantity("full_moon_cycle")
|
||||
full_moon_cycle.set_global_relative_scale_factor(411.78443029, day)
|
||||
|
||||
year = years = tropical_year
|
||||
|
||||
|
||||
#### CONSTANTS ####
|
||||
|
||||
# Newton constant
|
||||
G = gravitational_constant = PhysicalConstant("gravitational_constant", abbrev="G")
|
||||
|
||||
# speed of light
|
||||
c = speed_of_light = PhysicalConstant("speed_of_light", abbrev="c")
|
||||
|
||||
# elementary charge
|
||||
elementary_charge = PhysicalConstant("elementary_charge", abbrev="e")
|
||||
|
||||
# Planck constant
|
||||
planck = PhysicalConstant("planck", abbrev="h")
|
||||
|
||||
# Reduced Planck constant
|
||||
hbar = PhysicalConstant("hbar", abbrev="hbar")
|
||||
|
||||
# Electronvolt
|
||||
eV = electronvolt = electronvolts = PhysicalConstant("electronvolt", abbrev="eV")
|
||||
|
||||
# Avogadro number
|
||||
avogadro_number = PhysicalConstant("avogadro_number")
|
||||
|
||||
# Avogadro constant
|
||||
avogadro = avogadro_constant = PhysicalConstant("avogadro_constant")
|
||||
|
||||
# Boltzmann constant
|
||||
boltzmann = boltzmann_constant = PhysicalConstant("boltzmann_constant")
|
||||
|
||||
# Stefan-Boltzmann constant
|
||||
stefan = stefan_boltzmann_constant = PhysicalConstant("stefan_boltzmann_constant")
|
||||
|
||||
# Molar gas constant
|
||||
R = molar_gas_constant = PhysicalConstant("molar_gas_constant", abbrev="R")
|
||||
|
||||
# Faraday constant
|
||||
faraday_constant = PhysicalConstant("faraday_constant")
|
||||
|
||||
# Josephson constant
|
||||
josephson_constant = PhysicalConstant("josephson_constant", abbrev="K_j")
|
||||
|
||||
# Von Klitzing constant
|
||||
von_klitzing_constant = PhysicalConstant("von_klitzing_constant", abbrev="R_k")
|
||||
|
||||
# Acceleration due to gravity (on the Earth surface)
|
||||
gee = gees = acceleration_due_to_gravity = PhysicalConstant("acceleration_due_to_gravity", abbrev="g")
|
||||
|
||||
# magnetic constant:
|
||||
u0 = magnetic_constant = vacuum_permeability = PhysicalConstant("magnetic_constant")
|
||||
|
||||
# electric constat:
|
||||
e0 = electric_constant = vacuum_permittivity = PhysicalConstant("vacuum_permittivity")
|
||||
|
||||
# vacuum impedance:
|
||||
Z0 = vacuum_impedance = PhysicalConstant("vacuum_impedance", abbrev='Z_0', latex_repr=r'Z_{0}')
|
||||
|
||||
# Coulomb's constant:
|
||||
coulomb_constant = coulombs_constant = electric_force_constant = \
|
||||
PhysicalConstant("coulomb_constant", abbrev="k_e")
|
||||
|
||||
|
||||
atmosphere = atmospheres = atm = Quantity("atmosphere", abbrev="atm")
|
||||
|
||||
kPa = kilopascal = Quantity("kilopascal", abbrev="kPa")
|
||||
kilopascal.set_global_relative_scale_factor(kilo, Pa)
|
||||
|
||||
bar = bars = Quantity("bar", abbrev="bar")
|
||||
|
||||
pound = pounds = Quantity("pound") # exact
|
||||
|
||||
psi = Quantity("psi")
|
||||
|
||||
dHg0 = 13.5951 # approx value at 0 C
|
||||
mmHg = torr = Quantity("mmHg")
|
||||
|
||||
atmosphere.set_global_relative_scale_factor(101325, pascal)
|
||||
bar.set_global_relative_scale_factor(100, kPa)
|
||||
pound.set_global_relative_scale_factor(Rational(45359237, 100000000), kg)
|
||||
|
||||
mmu = mmus = milli_mass_unit = Quantity("milli_mass_unit")
|
||||
|
||||
quart = quarts = Quantity("quart")
|
||||
|
||||
|
||||
# Other convenient units and magnitudes
|
||||
|
||||
ly = lightyear = lightyears = Quantity("lightyear", abbrev="ly")
|
||||
|
||||
au = astronomical_unit = astronomical_units = Quantity("astronomical_unit", abbrev="AU")
|
||||
|
||||
|
||||
# Fundamental Planck units:
|
||||
planck_mass = Quantity("planck_mass", abbrev="m_P", latex_repr=r'm_\text{P}')
|
||||
|
||||
planck_time = Quantity("planck_time", abbrev="t_P", latex_repr=r't_\text{P}')
|
||||
|
||||
planck_temperature = Quantity("planck_temperature", abbrev="T_P",
|
||||
latex_repr=r'T_\text{P}')
|
||||
|
||||
planck_length = Quantity("planck_length", abbrev="l_P", latex_repr=r'l_\text{P}')
|
||||
|
||||
planck_charge = Quantity("planck_charge", abbrev="q_P", latex_repr=r'q_\text{P}')
|
||||
|
||||
|
||||
# Derived Planck units:
|
||||
planck_area = Quantity("planck_area")
|
||||
|
||||
planck_volume = Quantity("planck_volume")
|
||||
|
||||
planck_momentum = Quantity("planck_momentum")
|
||||
|
||||
planck_energy = Quantity("planck_energy", abbrev="E_P", latex_repr=r'E_\text{P}')
|
||||
|
||||
planck_force = Quantity("planck_force", abbrev="F_P", latex_repr=r'F_\text{P}')
|
||||
|
||||
planck_power = Quantity("planck_power", abbrev="P_P", latex_repr=r'P_\text{P}')
|
||||
|
||||
planck_density = Quantity("planck_density", abbrev="rho_P", latex_repr=r'\rho_\text{P}')
|
||||
|
||||
planck_energy_density = Quantity("planck_energy_density", abbrev="rho^E_P")
|
||||
|
||||
planck_intensity = Quantity("planck_intensity", abbrev="I_P", latex_repr=r'I_\text{P}')
|
||||
|
||||
planck_angular_frequency = Quantity("planck_angular_frequency", abbrev="omega_P",
|
||||
latex_repr=r'\omega_\text{P}')
|
||||
|
||||
planck_pressure = Quantity("planck_pressure", abbrev="p_P", latex_repr=r'p_\text{P}')
|
||||
|
||||
planck_current = Quantity("planck_current", abbrev="I_P", latex_repr=r'I_\text{P}')
|
||||
|
||||
planck_voltage = Quantity("planck_voltage", abbrev="V_P", latex_repr=r'V_\text{P}')
|
||||
|
||||
planck_impedance = Quantity("planck_impedance", abbrev="Z_P", latex_repr=r'Z_\text{P}')
|
||||
|
||||
planck_acceleration = Quantity("planck_acceleration", abbrev="a_P",
|
||||
latex_repr=r'a_\text{P}')
|
||||
|
||||
|
||||
# Information theory units:
|
||||
bit = bits = Quantity("bit")
|
||||
bit.set_global_dimension(information)
|
||||
|
||||
byte = bytes = Quantity("byte")
|
||||
|
||||
kibibyte = kibibytes = Quantity("kibibyte")
|
||||
mebibyte = mebibytes = Quantity("mebibyte")
|
||||
gibibyte = gibibytes = Quantity("gibibyte")
|
||||
tebibyte = tebibytes = Quantity("tebibyte")
|
||||
pebibyte = pebibytes = Quantity("pebibyte")
|
||||
exbibyte = exbibytes = Quantity("exbibyte")
|
||||
|
||||
byte.set_global_relative_scale_factor(8, bit)
|
||||
kibibyte.set_global_relative_scale_factor(kibi, byte)
|
||||
mebibyte.set_global_relative_scale_factor(mebi, byte)
|
||||
gibibyte.set_global_relative_scale_factor(gibi, byte)
|
||||
tebibyte.set_global_relative_scale_factor(tebi, byte)
|
||||
pebibyte.set_global_relative_scale_factor(pebi, byte)
|
||||
exbibyte.set_global_relative_scale_factor(exbi, byte)
|
||||
|
||||
# Older units for radioactivity
|
||||
curie = Ci = Quantity("curie", abbrev="Ci")
|
||||
|
||||
rutherford = Rd = Quantity("rutherford", abbrev="Rd")
|
||||
Reference in New Issue
Block a user