1# -*- coding: utf-8 -*- 2""" 3""" 4from __future__ import absolute_import 5 6from ..unitquantity import UnitCurrent, UnitLuminousIntensity, UnitQuantity 7from .time import s 8from .length import cm, m 9from .energy import J, erg 10from .velocity import c 11from .force import N 12from math import pi 13 14 15A = amp = amps = ampere = amperes = UnitCurrent( 16 'ampere', 17 symbol='A', 18 aliases=['amp', 'amps', 'amperes'] 19) 20mA = milliamp = milliampere = UnitCurrent( 21 'milliampere', 22 A/1000, 23 symbol='mA', 24 aliases=['milliamp', 'milliamps', 'milliamperes'] 25) 26uA = microampere = UnitCurrent( 27 'microampere', 28 mA/1000, 29 symbol='uA', 30 u_symbol='µA', 31 aliases=['microamp', 'microamps', 'microamperes']) 32nA = nanoamp = nanoampere = UnitCurrent( 33 'nanoampere', 34 uA/1000, 35 symbol='nA', 36 aliases=['nanoamp', 'nanoamps', 'nanoamperes'] 37) 38pA = picoamp = picoampere = UnitCurrent( 39 'picoampere', 40 nA/1000, 41 symbol='pA', 42 aliases=['picoamp', 'picoamps', 'picoamperes'] 43) 44aA = abampere = biot = UnitCurrent( 45 'abampere', 46 10*A, 47 symbol='aA', 48 aliases=['abamperes', 'biot', 'biots'] 49) 50 51esu = statcoulomb = statC = franklin = Fr = UnitQuantity( 52 'statcoulomb', 53 1 * erg**0.5 * cm**0.5, 54 symbol='esu', 55 aliases=['statcoulombs', 'statC', 'franklin', 'franklins', 'Fr'] 56) 57esu_per_second = statampere = UnitCurrent( 58 'statampere', 59 esu/s, 60 symbol='(esu/s)', 61 aliases=['statamperes'] 62) 63 64ampere_turn = UnitQuantity( 65 'ampere_turn', 66 1*A 67) 68Gi = gilbert = UnitQuantity( 69 'gilbert', 70 10/(4*pi)*ampere_turn, 71 symbol='Gi' 72) 73 74C = coulomb = UnitQuantity( 75 'coulomb', 76 A*s, 77 symbol='C' 78) 79mC = millicoulomb = UnitQuantity( 80 'millicoulomb', 81 1e-3*C, 82 symbol='mC' 83) 84uC = microcoulomb = UnitQuantity( 85 'microcoulomb', 86 1e-6*C, 87 symbol='uC', 88 u_symbol='μC' 89) 90V = volt = UnitQuantity( 91 'volt', 92 J/C, 93 symbol='V', 94 aliases=['volts'] 95) 96kV = kilovolt = UnitQuantity( 97 'kilovolt', 98 1000*V, 99 symbol='kV', 100 aliases=['kilovolts'] 101) 102mV = millivolt = UnitQuantity( 103 'millivolt', 104 V/1000, 105 symbol='mV', 106 aliases=['millivolts'] 107) 108uV = microvolt = UnitQuantity( 109 'microvolt', 110 V/1e6, 111 symbol='uV', 112 u_symbol='μV', 113 aliases=['microvolts'] 114) 115F = farad = UnitQuantity( 116 'farad', 117 C/V, 118 symbol='F', 119 aliases=['farads'] 120) 121mF = UnitQuantity( 122 'millifarad', 123 F/1000, 124 symbol='mF' 125) 126uF = UnitQuantity( 127 'microfarad', 128 mF/1000, 129 symbol='uF', 130 u_symbol='μF' 131) 132nF = UnitQuantity( 133 'nanofarad', 134 uF/1000, 135 symbol='nF' 136) 137pF = UnitQuantity( 138 'picofarad', 139 nF/1000, 140 symbol='pF' 141) 142ohm = Ohm = UnitQuantity( 143 'ohm', 144 V/A, 145 u_symbol='Ω', 146 aliases=['ohms', 'Ohm'] 147) 148kOhm = UnitQuantity( 149 'kiloohm', 150 ohm*1000, 151 u_symbol='kΩ', 152 aliases=['kOhm', 'kohm', 'kiloohms'] 153) 154MOhm = UnitQuantity( 155 'megaohm', 156 kOhm*1000, 157 u_symbol='MΩ', 158 aliases=['MOhm', 'Mohm', 'megaohms'] 159) 160S = siemens = UnitQuantity( 161 'siemens', 162 A/V, 163 symbol='S' 164) 165mS = millisiemens = UnitQuantity( 166 'millisiemens', 167 S/1000, 168 symbol='mS' 169) 170uS = microsiemens = UnitQuantity( 171 'microsiemens', 172 mS/1000, 173 symbol='uS', 174 u_symbol='μS' 175) 176nS = nanosiemens = UnitQuantity( 177 'nanosiemens', 178 uS/1000, 179 symbol='nS' 180) 181pS = picosiemens = UnitQuantity( 182 'picosiemens', 183 nS/1000, 184 symbol='pS' 185) 186Wb = weber = UnitQuantity( 187 'weber', 188 V*s, 189 symbol='Wb', 190 aliases=['webers'] 191) 192T = tesla = UnitQuantity( 193 'tesla', 194 Wb/m**2, 195 symbol='T', 196 aliases=['teslas'] 197) 198H = henry = UnitQuantity( 199 'henry', 200 Wb/A, 201 symbol='H' 202) 203abfarad = UnitQuantity( 204 'abfarad', 205 1e9*farad, 206 aliases=['abfarads'] 207) 208abhenry = UnitQuantity( 209 'abhenry', 210 1e-9*henry 211) 212abmho = UnitQuantity( 213 'abmho', 214 1e9*S 215) 216abohm = UnitQuantity( 217 'abohm', 218 1e-9*ohm 219) 220abvolt = UnitQuantity( 221 'abvolt', 222 1e-8*V, 223 aliases=['abvolts'] 224) 225e = elementary_charge = UnitQuantity( 226 'elementary_charge', 227 1.602176487e-19*C, 228 symbol='e', 229 doc='relative uncertainty = 6.64e-8' 230) 231chemical_faraday = UnitQuantity( 232 'chemical_faraday', 233 9.64957e4*C 234) 235physical_faraday = UnitQuantity( 236 'physical_faraday', 237 9.65219e4*C 238) 239faraday = C12_faraday = UnitQuantity( 240 'faraday', 241 96485.3399*C, 242 aliases=['faradays'], 243 doc='The symbol F is reserved for the farad' 244) 245gamma = UnitQuantity( 246 'gamma', 247 1e-9*T 248) 249gauss = UnitQuantity( 250 'gauss', 251 1e-4*T, 252 symbol='G' 253) 254maxwell = UnitQuantity( 255 'maxwell', 256 1e-8*Wb, 257 symbol='Mx', 258 aliases=['maxwells'] 259) 260Oe = oersted = UnitQuantity( 261 'oersted', 262 1000/(4*pi)*A/m, 263 symbol='Oe', 264 aliases=['aliases'] 265) 266statfarad = statF = stF = UnitQuantity( 267 'statfarad', 268 1.112650e-12*F, 269 symbol='stF', 270 aliases=['statfarads', 'statF'] 271) 272stathenry = statH = stH = UnitQuantity( 273 'stathenry', 274 8.987554e11*H, 275 symbol='stH', 276 aliases=['statH'] 277) 278statmho = statS = stS = UnitQuantity( 279 'statmho', 280 1.112650e-12*S, 281 symbol='stS' 282) 283statohm = UnitQuantity( 284 'statohm', 285 8.987554e11*ohm, 286 u_symbol='stΩ', 287 aliases=['statohms'] 288) 289statvolt = statV = stV = UnitQuantity( 290 'statvolt', 291 2.997925e2*V, 292 symbol='stV', 293 aliases=['statvolts', 'statV'] 294) 295unit_pole = UnitQuantity( 296 'unit_pole', 297 1.256637e-7*Wb 298) 299vacuum_permeability = mu_0 = magnetic_constant = UnitQuantity( 300 'magnetic_constant', 301 4*pi*10**-7*N/A**2, 302 symbol='mu_0', 303 u_symbol='μ₀', 304 aliases=['vacuum_permeability'] 305) 306vacuum_permittivity = epsilon_0 = electric_constant = UnitQuantity( 307 'electric_constant', 308 1/(mu_0*c**2), 309 symbol='epsilon_0', 310 u_symbol='ε₀', 311 aliases=['vacuum_permittivity'] 312) 313Z_0 = impedence_of_free_space = characteristic_impedance_of_vacuum = \ 314 UnitQuantity( 315 'characteristic_impedance_of_vacuum', 316 mu_0*c, 317 symbol='Z_0', 318 u_symbol='Z₀', 319 aliases=['impedence_of_free_space'] 320) 321 322cd = candle = candela = UnitLuminousIntensity( 323 'candela', 324 symbol='cd', 325 aliases=['candle', 'candles', 'candelas'] 326) 327 328del UnitQuantity, s, m, J, c 329