Spectra of various substances, from "Les phénomènes de la physique" (1868) Stationery Card Quantity:Set of 3 Folded Cards (5" x 7") almost austere arrangement emphasizes the

almost austere arrangement emphasizes the weight of the words themselves

and sage green against cream

or any room needing a motivational lift

and deep plum

Spectra of various substances, from "Les phénomènes de la physique" (1868) Stationery Card Quantity:Set of 3 Folded Cards (5" x 7") almost austere arrangement emphasizes theVertical 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