Intensity is to brightness as wavelength is to: d. hue
Psychology refers to the scientific study of both the consciousness and unconsciousness of the human mind based on feelings, emotions and thoughts, so as to better understand how the mind functions and affect human behaviors in contextual terms.
In Psychology, intensity relates to the brightness of light in the visible-light spectrum while wavelength describes the level of its hue.
Generally, the wavelength at which energy output from a particular source is greatest within the visible-light spectrum is generally referred to as hue.
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