diff options
Diffstat (limited to 'pint/default_en.txt')
-rw-r--r-- | pint/default_en.txt | 32 |
1 files changed, 26 insertions, 6 deletions
diff --git a/pint/default_en.txt b/pint/default_en.txt index 8bd4133..ee0cbcd 100644 --- a/pint/default_en.txt +++ b/pint/default_en.txt @@ -108,7 +108,6 @@ gram = [mass] = g mole = [substance] = mol kelvin = [temperature]; offset: 0 = K = degK = °K = degree_Kelvin = degreeK # older names supported for compatibility radian = [] = rad -neper = [] = Np bit = [] count = [] @@ -136,13 +135,13 @@ mil = π / 32000 * radian steradian = radian ** 2 = sr square_degree = (π / 180) ** 2 * sr = sq_deg = sqdeg -# Logarithmic ratio -bel = 0.5 * ln10 * neper - # Information -byte = 8 * bit = B = octet baud = bit / second = Bd = bps +byte = 8 * bit = B = octet +# byte = 8 * bit = _ = octet +## NOTE: B (byte) symbol can conflict with Bell + # Length angstrom = 1e-10 * meter = Å = ångström = Å micron = micrometer = µ @@ -174,7 +173,10 @@ week = 7 * day fortnight = 2 * week year = 365.25 * day = a = yr = julian_year month = year / 12 -decade = 10 * year + +# decade = 10 * year +## NOTE: decade [time] can conflict with decade [dimensionless] + century = 100 * year = _ = centuries millennium = 1e3 * year = _ = millennia eon = 1e9 * year @@ -305,6 +307,7 @@ inch_H2O_39F = inch * water_39F * g_0 inch_H2O_60F = inch * water_60F * g_0 foot_H2O = foot * water * g_0 = ftH2O = feet_H2O centimeter_H2O = centimeter * water * g_0 = cmH2O = cm_H2O +sound_pressure_level = 20e-6 * pascal = SPL # Torque [torque] = [force] * [length] @@ -467,6 +470,23 @@ buckingham = debye * angstrom bohr_magneton = e * hbar / (2 * m_e) = µ_B = mu_B nuclear_magneton = e * hbar / (2 * m_p) = µ_N = mu_N +# Logaritmic Unit Definition +# Unit = scale; logbase; logfactor +# x_dB = [logfactor] * log( x_lin / [scale] ) / log( [logbase] ) + +# Logaritmic Units of dimensionless quantity: [ https://en.wikipedia.org/wiki/Level_(logarithmic_quantity) ] + +decibellmilliwatt = 1e-3 W; logbase: 10; logfactor: 10 = dBm + +decibell = 1 ; logbase: 10; logfactor: 10 = dB +# bell = 1 ; logbase: 10; logfactor: = B +## NOTE: B (Bell) symbol conflicts with byte + +decade = 1 ; logbase: 10; logfactor: 1 +## NOTE: decade [time] can conflict with decade [dimensionless] + +neper = 1 ; logbase: 2.71828182845904523536028747135266249775724709369995; logfactor: 0.5 = Np +# neper = 1 ; logbase: eulers_number; logfactor: 0.5 = Np #### UNIT GROUPS #### # Mostly for length, area, volume, mass, force |