Clarification of White Light/Superposition

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White light is indeed a superposition of multiple wavelengths, primarily seven, but it does not have a single definite wavelength. Instead, it can be described by a range of wavelengths that collectively produce the perception of white light. The human eye perceives white light using just three types of receptors, which respond to different frequencies. White light is often classified based on an idealized black body spectrum, with specific temperatures in Kelvin, such as 6500K for daylight. This understanding clarifies the nature of white light and its representation in various contexts.
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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.
 
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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.
 
"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'.
 
Thanks, that clarifies it.
 
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