bundles / scipy latest / scipy / constants / _constants / lambda2nu
function
scipy.constants._constants:lambda2nu
source: build-install/usr/lib/python3.14/site-packages/scipy/constants/_constants.py:308
Signature
def lambda2nu(lambda_: npt.ArrayLike) → AnySummary
Convert wavelength to optical frequency.
Parameters
lambda_: array_likeWavelength(s) to be converted.
Returns
nu: float or array of floatsEquivalent optical frequency.
Notes
Computes nu = c / lambda where 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([3.e+08, 1.e+00])
Aliases
scipy.constants.lambda2nu