colour.sd_blackbody¶
-
colour.
sd_blackbody
(temperature, shape=SpectralShape(360, 780, 1), c1=3.741771e-16, c2=0.014388, n=1)[source]¶ Returns the spectral distribution of the planckian radiator for given temperature \(T[K]\).
- Parameters
temperature (numeric) – Temperature \(T[K]\) in kelvin degrees.
shape (SpectralShape, optional) – Spectral shape used to create the spectral distribution of the planckian radiator.
c1 (numeric, optional) – The official value of \(c1\) is provided by the Committee on Data for Science and Technology (CODATA) and is \(c1=3,741771x10.16\ W/m_2\) (Mohr and Taylor, 2000).
c2 (numeric, optional) – Since \(T\) is measured on the International Temperature Scale, the value of \(c2\) used in colorimetry should follow that adopted in the current International Temperature Scale (ITS-90) (Preston-Thomas, 1990; Mielenz et aI., 1991), namely \(c2=1,4388x10.2\ m/K\).
n (numeric, optional) – Medium index of refraction. For dry air at 15C and 101 325 Pa, containing 0,03 percent by volume of carbon dioxide, it is approximately 1,00028 throughout the visible region although CIE 15:2004 recommends using \(n=1\).
- Returns
Blackbody spectral distribution.
- Return type
Examples
>>> from colour.utilities import numpy_print_options >>> with numpy_print_options(suppress=True): ... sd_blackbody(5000) SpectralDistribution([[ 3.60000000e+02, 6.65427827e+12], [ 3.61000000e+02, 6.70960528e+12], [ 3.62000000e+02, 6.76482512e+12], [ 3.63000000e+02, 6.81993308e+12], [ 3.64000000e+02, 6.87492449e+12], [ 3.65000000e+02, 6.92979475e+12], [ 3.66000000e+02, 6.98453932e+12], [ 3.67000000e+02, 7.03915372e+12], [ 3.68000000e+02, 7.09363351e+12], [ 3.69000000e+02, 7.14797433e+12], [ 3.70000000e+02, 7.20217187e+12], [ 3.71000000e+02, 7.25622190e+12], [ 3.72000000e+02, 7.31012021e+12], [ 3.73000000e+02, 7.36386268e+12], [ 3.74000000e+02, 7.41744525e+12], [ 3.75000000e+02, 7.47086391e+12], [ 3.76000000e+02, 7.52411471e+12], [ 3.77000000e+02, 7.57719377e+12], [ 3.78000000e+02, 7.63009726e+12], [ 3.79000000e+02, 7.68282141e+12], [ 3.80000000e+02, 7.73536252e+12], [ 3.81000000e+02, 7.78771695e+12], [ 3.82000000e+02, 7.83988111e+12], [ 3.83000000e+02, 7.89185148e+12], [ 3.84000000e+02, 7.94362458e+12], [ 3.85000000e+02, 7.99519703e+12], [ 3.86000000e+02, 8.04656547e+12], [ 3.87000000e+02, 8.09772662e+12], [ 3.88000000e+02, 8.14867726e+12], [ 3.89000000e+02, 8.19941421e+12], [ 3.90000000e+02, 8.24993438e+12], [ 3.91000000e+02, 8.30023471e+12], [ 3.92000000e+02, 8.35031222e+12], [ 3.93000000e+02, 8.40016398e+12], [ 3.94000000e+02, 8.44978711e+12], [ 3.95000000e+02, 8.49917881e+12], [ 3.96000000e+02, 8.54833632e+12], [ 3.97000000e+02, 8.59725693e+12], [ 3.98000000e+02, 8.64593802e+12], [ 3.99000000e+02, 8.69437700e+12], [ 4.00000000e+02, 8.74257133e+12], [ 4.01000000e+02, 8.79051856e+12], [ 4.02000000e+02, 8.83821626e+12], [ 4.03000000e+02, 8.88566209e+12], [ 4.04000000e+02, 8.93285373e+12], [ 4.05000000e+02, 8.97978893e+12], [ 4.06000000e+02, 9.02646551e+12], [ 4.07000000e+02, 9.07288133e+12], [ 4.08000000e+02, 9.11903431e+12], [ 4.09000000e+02, 9.16492240e+12], [ 4.10000000e+02, 9.21054364e+12], [ 4.11000000e+02, 9.25589609e+12], [ 4.12000000e+02, 9.30097789e+12], [ 4.13000000e+02, 9.34578722e+12], [ 4.14000000e+02, 9.39032230e+12], [ 4.15000000e+02, 9.43458143e+12], [ 4.16000000e+02, 9.47856292e+12], [ 4.17000000e+02, 9.52226517e+12], [ 4.18000000e+02, 9.56568661e+12], [ 4.19000000e+02, 9.60882571e+12], [ 4.20000000e+02, 9.65168102e+12], [ 4.21000000e+02, 9.69425111e+12], [ 4.22000000e+02, 9.73653461e+12], [ 4.23000000e+02, 9.77853020e+12], [ 4.24000000e+02, 9.82023659e+12], [ 4.25000000e+02, 9.86165257e+12], [ 4.26000000e+02, 9.90277693e+12], [ 4.27000000e+02, 9.94360856e+12], [ 4.28000000e+02, 9.98414634e+12], [ 4.29000000e+02, 1.00243892e+13], [ 4.30000000e+02, 1.00643363e+13], [ 4.31000000e+02, 1.01039864e+13], [ 4.32000000e+02, 1.01433388e+13], [ 4.33000000e+02, 1.01823926e+13], [ 4.34000000e+02, 1.02211468e+13], [ 4.35000000e+02, 1.02596009e+13], [ 4.36000000e+02, 1.02977539e+13], [ 4.37000000e+02, 1.03356052e+13], [ 4.38000000e+02, 1.03731541e+13], [ 4.39000000e+02, 1.04104000e+13], [ 4.40000000e+02, 1.04473423e+13], [ 4.41000000e+02, 1.04839805e+13], [ 4.42000000e+02, 1.05203140e+13], [ 4.43000000e+02, 1.05563424e+13], [ 4.44000000e+02, 1.05920652e+13], [ 4.45000000e+02, 1.06274821e+13], [ 4.46000000e+02, 1.06625927e+13], [ 4.47000000e+02, 1.06973967e+13], [ 4.48000000e+02, 1.07318937e+13], [ 4.49000000e+02, 1.07660835e+13], [ 4.50000000e+02, 1.07999660e+13], [ 4.51000000e+02, 1.08335408e+13], [ 4.52000000e+02, 1.08668080e+13], [ 4.53000000e+02, 1.08997673e+13], [ 4.54000000e+02, 1.09324187e+13], [ 4.55000000e+02, 1.09647621e+13], [ 4.56000000e+02, 1.09967975e+13], [ 4.57000000e+02, 1.10285249e+13], [ 4.58000000e+02, 1.10599443e+13], [ 4.59000000e+02, 1.10910559e+13], [ 4.60000000e+02, 1.11218598e+13], [ 4.61000000e+02, 1.11523560e+13], [ 4.62000000e+02, 1.11825447e+13], [ 4.63000000e+02, 1.12124262e+13], [ 4.64000000e+02, 1.12420006e+13], [ 4.65000000e+02, 1.12712681e+13], [ 4.66000000e+02, 1.13002292e+13], [ 4.67000000e+02, 1.13288840e+13], [ 4.68000000e+02, 1.13572329e+13], [ 4.69000000e+02, 1.13852762e+13], [ 4.70000000e+02, 1.14130144e+13], [ 4.71000000e+02, 1.14404478e+13], [ 4.72000000e+02, 1.14675768e+13], [ 4.73000000e+02, 1.14944020e+13], [ 4.74000000e+02, 1.15209237e+13], [ 4.75000000e+02, 1.15471425e+13], [ 4.76000000e+02, 1.15730590e+13], [ 4.77000000e+02, 1.15986736e+13], [ 4.78000000e+02, 1.16239869e+13], [ 4.79000000e+02, 1.16489996e+13], [ 4.80000000e+02, 1.16737122e+13], [ 4.81000000e+02, 1.16981253e+13], [ 4.82000000e+02, 1.17222397e+13], [ 4.83000000e+02, 1.17460559e+13], [ 4.84000000e+02, 1.17695747e+13], [ 4.85000000e+02, 1.17927969e+13], [ 4.86000000e+02, 1.18157230e+13], [ 4.87000000e+02, 1.18383540e+13], [ 4.88000000e+02, 1.18606904e+13], [ 4.89000000e+02, 1.18827333e+13], [ 4.90000000e+02, 1.19044832e+13], [ 4.91000000e+02, 1.19259412e+13], [ 4.92000000e+02, 1.19471079e+13], [ 4.93000000e+02, 1.19679843e+13], [ 4.94000000e+02, 1.19885712e+13], [ 4.95000000e+02, 1.20088695e+13], [ 4.96000000e+02, 1.20288802e+13], [ 4.97000000e+02, 1.20486041e+13], [ 4.98000000e+02, 1.20680421e+13], [ 4.99000000e+02, 1.20871953e+13], [ 5.00000000e+02, 1.21060645e+13], [ 5.01000000e+02, 1.21246508e+13], [ 5.02000000e+02, 1.21429552e+13], [ 5.03000000e+02, 1.21609785e+13], [ 5.04000000e+02, 1.21787220e+13], [ 5.05000000e+02, 1.21961865e+13], [ 5.06000000e+02, 1.22133731e+13], [ 5.07000000e+02, 1.22302829e+13], [ 5.08000000e+02, 1.22469170e+13], [ 5.09000000e+02, 1.22632763e+13], [ 5.10000000e+02, 1.22793620e+13], [ 5.11000000e+02, 1.22951752e+13], [ 5.12000000e+02, 1.23107171e+13], [ 5.13000000e+02, 1.23259886e+13], [ 5.14000000e+02, 1.23409909e+13], [ 5.15000000e+02, 1.23557252e+13], [ 5.16000000e+02, 1.23701926e+13], [ 5.17000000e+02, 1.23843943e+13], [ 5.18000000e+02, 1.23983314e+13], [ 5.19000000e+02, 1.24120051e+13], [ 5.20000000e+02, 1.24254166e+13], [ 5.21000000e+02, 1.24385670e+13], [ 5.22000000e+02, 1.24514576e+13], [ 5.23000000e+02, 1.24640896e+13], [ 5.24000000e+02, 1.24764641e+13], [ 5.25000000e+02, 1.24885824e+13], [ 5.26000000e+02, 1.25004457e+13], [ 5.27000000e+02, 1.25120552e+13], [ 5.28000000e+02, 1.25234122e+13], [ 5.29000000e+02, 1.25345178e+13], [ 5.30000000e+02, 1.25453735e+13], [ 5.31000000e+02, 1.25559803e+13], [ 5.32000000e+02, 1.25663396e+13], [ 5.33000000e+02, 1.25764527e+13], [ 5.34000000e+02, 1.25863207e+13], [ 5.35000000e+02, 1.25959449e+13], [ 5.36000000e+02, 1.26053268e+13], [ 5.37000000e+02, 1.26144674e+13], [ 5.38000000e+02, 1.26233681e+13], [ 5.39000000e+02, 1.26320302e+13], [ 5.40000000e+02, 1.26404551e+13], [ 5.41000000e+02, 1.26486438e+13], [ 5.42000000e+02, 1.26565979e+13], [ 5.43000000e+02, 1.26643185e+13], [ 5.44000000e+02, 1.26718071e+13], [ 5.45000000e+02, 1.26790648e+13], [ 5.46000000e+02, 1.26860930e+13], [ 5.47000000e+02, 1.26928930e+13], [ 5.48000000e+02, 1.26994662e+13], [ 5.49000000e+02, 1.27058138e+13], [ 5.50000000e+02, 1.27119372e+13], [ 5.51000000e+02, 1.27178376e+13], [ 5.52000000e+02, 1.27235164e+13], [ 5.53000000e+02, 1.27289750e+13], [ 5.54000000e+02, 1.27342146e+13], [ 5.55000000e+02, 1.27392366e+13], [ 5.56000000e+02, 1.27440423e+13], [ 5.57000000e+02, 1.27486330e+13], [ 5.58000000e+02, 1.27530100e+13], [ 5.59000000e+02, 1.27571748e+13], [ 5.60000000e+02, 1.27611285e+13], [ 5.61000000e+02, 1.27648725e+13], [ 5.62000000e+02, 1.27684083e+13], [ 5.63000000e+02, 1.27717370e+13], [ 5.64000000e+02, 1.27748600e+13], [ 5.65000000e+02, 1.27777787e+13], [ 5.66000000e+02, 1.27804943e+13], [ 5.67000000e+02, 1.27830082e+13], [ 5.68000000e+02, 1.27853217e+13], [ 5.69000000e+02, 1.27874362e+13], [ 5.70000000e+02, 1.27893529e+13], [ 5.71000000e+02, 1.27910732e+13], [ 5.72000000e+02, 1.27925984e+13], [ 5.73000000e+02, 1.27939299e+13], [ 5.74000000e+02, 1.27950689e+13], [ 5.75000000e+02, 1.27960167e+13], [ 5.76000000e+02, 1.27967747e+13], [ 5.77000000e+02, 1.27973442e+13], [ 5.78000000e+02, 1.27977264e+13], [ 5.79000000e+02, 1.27979228e+13], [ 5.80000000e+02, 1.27979346e+13], [ 5.81000000e+02, 1.27977630e+13], [ 5.82000000e+02, 1.27974095e+13], [ 5.83000000e+02, 1.27968753e+13], [ 5.84000000e+02, 1.27961617e+13], [ 5.85000000e+02, 1.27952700e+13], [ 5.86000000e+02, 1.27942015e+13], [ 5.87000000e+02, 1.27929575e+13], [ 5.88000000e+02, 1.27915392e+13], [ 5.89000000e+02, 1.27899480e+13], [ 5.90000000e+02, 1.27881852e+13], [ 5.91000000e+02, 1.27862519e+13], [ 5.92000000e+02, 1.27841495e+13], [ 5.93000000e+02, 1.27818793e+13], [ 5.94000000e+02, 1.27794424e+13], [ 5.95000000e+02, 1.27768403e+13], [ 5.96000000e+02, 1.27740741e+13], [ 5.97000000e+02, 1.27711451e+13], [ 5.98000000e+02, 1.27680546e+13], [ 5.99000000e+02, 1.27648037e+13], [ 6.00000000e+02, 1.27613938e+13], [ 6.01000000e+02, 1.27578261e+13], [ 6.02000000e+02, 1.27541018e+13], [ 6.03000000e+02, 1.27502222e+13], [ 6.04000000e+02, 1.27461885e+13], [ 6.05000000e+02, 1.27420020e+13], [ 6.06000000e+02, 1.27376637e+13], [ 6.07000000e+02, 1.27331750e+13], [ 6.08000000e+02, 1.27285371e+13], [ 6.09000000e+02, 1.27237512e+13], [ 6.10000000e+02, 1.27188185e+13], [ 6.11000000e+02, 1.27137402e+13], [ 6.12000000e+02, 1.27085175e+13], [ 6.13000000e+02, 1.27031516e+13], [ 6.14000000e+02, 1.26976436e+13], [ 6.15000000e+02, 1.26919949e+13], [ 6.16000000e+02, 1.26862064e+13], [ 6.17000000e+02, 1.26802795e+13], [ 6.18000000e+02, 1.26742153e+13], [ 6.19000000e+02, 1.26680149e+13], [ 6.20000000e+02, 1.26616795e+13], [ 6.21000000e+02, 1.26552103e+13], [ 6.22000000e+02, 1.26486085e+13], [ 6.23000000e+02, 1.26418751e+13], [ 6.24000000e+02, 1.26350113e+13], [ 6.25000000e+02, 1.26280183e+13], [ 6.26000000e+02, 1.26208972e+13], [ 6.27000000e+02, 1.26136491e+13], [ 6.28000000e+02, 1.26062751e+13], [ 6.29000000e+02, 1.25987764e+13], [ 6.30000000e+02, 1.25911540e+13], [ 6.31000000e+02, 1.25834092e+13], [ 6.32000000e+02, 1.25755429e+13], [ 6.33000000e+02, 1.25675563e+13], [ 6.34000000e+02, 1.25594505e+13], [ 6.35000000e+02, 1.25512265e+13], [ 6.36000000e+02, 1.25428855e+13], [ 6.37000000e+02, 1.25344285e+13], [ 6.38000000e+02, 1.25258566e+13], [ 6.39000000e+02, 1.25171709e+13], [ 6.40000000e+02, 1.25083724e+13], [ 6.41000000e+02, 1.24994622e+13], [ 6.42000000e+02, 1.24904413e+13], [ 6.43000000e+02, 1.24813108e+13], [ 6.44000000e+02, 1.24720718e+13], [ 6.45000000e+02, 1.24627252e+13], [ 6.46000000e+02, 1.24532721e+13], [ 6.47000000e+02, 1.24437136e+13], [ 6.48000000e+02, 1.24340506e+13], [ 6.49000000e+02, 1.24242842e+13], [ 6.50000000e+02, 1.24144153e+13], [ 6.51000000e+02, 1.24044450e+13], [ 6.52000000e+02, 1.23943743e+13], [ 6.53000000e+02, 1.23842042e+13], [ 6.54000000e+02, 1.23739356e+13], [ 6.55000000e+02, 1.23635696e+13], [ 6.56000000e+02, 1.23531072e+13], [ 6.57000000e+02, 1.23425492e+13], [ 6.58000000e+02, 1.23318967e+13], [ 6.59000000e+02, 1.23211506e+13], [ 6.60000000e+02, 1.23103120e+13], [ 6.61000000e+02, 1.22993816e+13], [ 6.62000000e+02, 1.22883606e+13], [ 6.63000000e+02, 1.22772498e+13], [ 6.64000000e+02, 1.22660502e+13], [ 6.65000000e+02, 1.22547627e+13], [ 6.66000000e+02, 1.22433883e+13], [ 6.67000000e+02, 1.22319278e+13], [ 6.68000000e+02, 1.22203821e+13], [ 6.69000000e+02, 1.22087523e+13], [ 6.70000000e+02, 1.21970391e+13], [ 6.71000000e+02, 1.21852435e+13], [ 6.72000000e+02, 1.21733664e+13], [ 6.73000000e+02, 1.21614087e+13], [ 6.74000000e+02, 1.21493712e+13], [ 6.75000000e+02, 1.21372548e+13], [ 6.76000000e+02, 1.21250605e+13], [ 6.77000000e+02, 1.21127890e+13], [ 6.78000000e+02, 1.21004413e+13], [ 6.79000000e+02, 1.20880182e+13], [ 6.80000000e+02, 1.20755205e+13], [ 6.81000000e+02, 1.20629491e+13], [ 6.82000000e+02, 1.20503049e+13], [ 6.83000000e+02, 1.20375887e+13], [ 6.84000000e+02, 1.20248012e+13], [ 6.85000000e+02, 1.20119434e+13], [ 6.86000000e+02, 1.19990161e+13], [ 6.87000000e+02, 1.19860200e+13], [ 6.88000000e+02, 1.19729560e+13], [ 6.89000000e+02, 1.19598249e+13], [ 6.90000000e+02, 1.19466275e+13], [ 6.91000000e+02, 1.19333646e+13], [ 6.92000000e+02, 1.19200370e+13], [ 6.93000000e+02, 1.19066454e+13], [ 6.94000000e+02, 1.18931907e+13], [ 6.95000000e+02, 1.18796736e+13], [ 6.96000000e+02, 1.18660949e+13], [ 6.97000000e+02, 1.18524554e+13], [ 6.98000000e+02, 1.18387558e+13], [ 6.99000000e+02, 1.18249969e+13], [ 7.00000000e+02, 1.18111794e+13], [ 7.01000000e+02, 1.17973040e+13], [ 7.02000000e+02, 1.17833716e+13], [ 7.03000000e+02, 1.17693829e+13], [ 7.04000000e+02, 1.17553385e+13], [ 7.05000000e+02, 1.17412392e+13], [ 7.06000000e+02, 1.17270858e+13], [ 7.07000000e+02, 1.17128789e+13], [ 7.08000000e+02, 1.16986192e+13], [ 7.09000000e+02, 1.16843075e+13], [ 7.10000000e+02, 1.16699445e+13], [ 7.11000000e+02, 1.16555309e+13], [ 7.12000000e+02, 1.16410673e+13], [ 7.13000000e+02, 1.16265544e+13], [ 7.14000000e+02, 1.16119930e+13], [ 7.15000000e+02, 1.15973836e+13], [ 7.16000000e+02, 1.15827271e+13], [ 7.17000000e+02, 1.15680240e+13], [ 7.18000000e+02, 1.15532749e+13], [ 7.19000000e+02, 1.15384807e+13], [ 7.20000000e+02, 1.15236419e+13], [ 7.21000000e+02, 1.15087591e+13], [ 7.22000000e+02, 1.14938331e+13], [ 7.23000000e+02, 1.14788644e+13], [ 7.24000000e+02, 1.14638537e+13], [ 7.25000000e+02, 1.14488017e+13], [ 7.26000000e+02, 1.14337088e+13], [ 7.27000000e+02, 1.14185759e+13], [ 7.28000000e+02, 1.14034034e+13], [ 7.29000000e+02, 1.13881921e+13], [ 7.30000000e+02, 1.13729424e+13], [ 7.31000000e+02, 1.13576551e+13], [ 7.32000000e+02, 1.13423307e+13], [ 7.33000000e+02, 1.13269698e+13], [ 7.34000000e+02, 1.13115730e+13], [ 7.35000000e+02, 1.12961409e+13], [ 7.36000000e+02, 1.12806741e+13], [ 7.37000000e+02, 1.12651731e+13], [ 7.38000000e+02, 1.12496385e+13], [ 7.39000000e+02, 1.12340710e+13], [ 7.40000000e+02, 1.12184710e+13], [ 7.41000000e+02, 1.12028391e+13], [ 7.42000000e+02, 1.11871759e+13], [ 7.43000000e+02, 1.11714819e+13], [ 7.44000000e+02, 1.11557577e+13], [ 7.45000000e+02, 1.11400038e+13], [ 7.46000000e+02, 1.11242208e+13], [ 7.47000000e+02, 1.11084092e+13], [ 7.48000000e+02, 1.10925695e+13], [ 7.49000000e+02, 1.10767023e+13], [ 7.50000000e+02, 1.10608080e+13], [ 7.51000000e+02, 1.10448872e+13], [ 7.52000000e+02, 1.10289405e+13], [ 7.53000000e+02, 1.10129683e+13], [ 7.54000000e+02, 1.09969711e+13], [ 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extrapolator_args={...})