scipy.constants.
lambda2nu#
- scipy.constants.lambda2nu(lambda_)[source]#
- Convert wavelength to optical frequency - Parameters:
- lambda_array_like
- Wavelength(s) to be converted. 
 
- Returns:
- nufloat or array of floats
- Equivalent optical frequency. 
 
 - Notes - Computes - nu = c / lambdawhere c = 299792458.0, i.e., the (vacuum) speed of light in meters/second.- Examples - >>> from scipy.constants import lambda2nu, speed_of_light >>> import numpy as np >>> lambda2nu(np.array((1, speed_of_light))) array([ 2.99792458e+08, 1.00000000e+00])