scipy.constants.
nu2lambda#
- scipy.constants.nu2lambda(nu)[source]#
- Convert optical frequency to wavelength. - Parameters:
- nuarray_like
- Optical frequency to be converted. 
 
- Returns:
- lambdafloat or array of floats
- Equivalent wavelength(s). 
 
 - Notes - Computes - lambda = c / nuwhere c = 299792458.0, i.e., the (vacuum) speed of light in meters/second.- nu2lambdahas experimental support for Python Array API Standard compatible backends in addition to NumPy. Please consider testing these features by setting an environment variable- SCIPY_ARRAY_API=1and providing CuPy, PyTorch, JAX, or Dask arrays as array arguments. The following combinations of backend and device (or other capability) are supported.- Library - CPU - GPU - NumPy - ✅ - n/a - CuPy - n/a - ✅ - PyTorch - ✅ - ✅ - JAX - ✅ - ✅ - Dask - ✅ - n/a - See Support for the array API standard for more information. - Examples - >>> from scipy.constants import nu2lambda, speed_of_light >>> import numpy as np >>> nu2lambda(np.array((1, speed_of_light))) array([ 2.99792458e+08, 1.00000000e+00])