### Instruction:

Extract the cause and effect entities from the following sentence:
The specified central wavelength, λ 0, will be different from the actual central wavelength, λ S, of a spectral channel, where the actual central wavelength has traditionally been defined as the centroid of the spectral response function

### Assistant:

VARIABLE: the actual central wavelength
CONDITION: has traditionally been defined as the centroid of the spectral response function
KEYWORD: where
EFFECT_1: The specified central wavelength, λ 0, will be different from the actual central wavelength, λ S, of a spectral channel
CAUSE_1: the actual central wavelength has traditionally been defined as the centroid of the spectral response function

