Spectrum...from the Latin, meaning apparition. Oh, to be able to experience beyond our human limits the visual spectrum which narrowly resides in the wavelengths betweem 380-750.
We can thank Roger Bacon and Isaac Newton for turning scientific eyes to our visual perception. With the later discovery of infrared, ultraviolet, and x-rays, we can begin to grasp our human limitations. Artists who emphasize expression through color will always struggle to find ways of allowing the infinite variations to play together to create the apparition. Viewers of artwork will respond differently to an artist's use of pigments, depending on each person's color perception. Inventing an apparition from fantasy landscapes like those described by J.R.R. Tolkien, can be an entertaining exercise in imagination and playing with color. His rich descriptions of the River Withywindle invoke visions of landscapes inhabited by fantastic beings--landscapes which need not adhere to our limited day-to-day experiences of light and color. This is Valley of the Withywindle from J.R.R. Tolkien's Fellowship of the Ring.