Does white light have a definite wavelength?

[FeDeX_LaTeX]

Hello;

White light is a superposition of seven different wavelengths of light, correct?

If this is true, does white light have a definite wavelength, even if it is a superposition of seven different wavelengths? Or does the wavelength of white light periodically change?

Thanks.

 

[granpa]

wavelength is only meaningful for single frequencies.

light from the sun is made a a virtually infinite number of wavelengths.

the eye has 3 types of receptors so you only need 3 frequencies to make what appears to us as white light.

 

[ACPower]

"White" light is typically classified based on an idealized black body spectrum of wavelength intensities for a given temperature, in Kelvin. For example, photographers talk of 6500Kelvin as 'daylight'.

 

[FeDeX_LaTeX]

Thanks, that clarifies it.