Vertical bands of spectral light stack like a scientific catalog, each column revealing the wavelengths emitted or absorbed by different substances in red, yellow, green, blue, and purple hues. The composition unfolds against deep black grounds, creating a methodical visual record where color itself becomes data, precise and luminous. Printed on smooth white card stock and made to order, artwork on the front, blank inside, envelopes included in every set. A handwritten note that arrives as an independent artist's work.