code: def spectral_radiance(nu, T):
      h = 6.626e-34  # Planck constant (Js)
      k = 1.3806e-23  # Boltzmann constant (J/K)
      c = 2.9979e8  # Speed of light in vacuum (m/s)
      return (2 * h * nu**3 / c**2) / (
          np.exp(h * nu / (k * T)) - 1.0
      )
  
imports: import numpy
  from bokeh.io import curdoc
  from bokeh.layouts import column
  from bokeh.models import Div
  from bokeh.palettes import Spectral
  from bokeh.plotting import figure, show
label_desc: Use image node_id 1 for calling a global function with example usage: spectral_radiance(nu, T) and returns: unknown