Spectra from light shone through prisms bandage left section

left section

to design improved mills

Stone date marks reading 1497

Distant view may be omitted or in faint outline & size reduced'

Spectra from light shone through prisms bandage left sectionOptical diagrams showing light shone through prisms and the resulting spectral patterns. Four figures numbered 15a 15b and 16a 16b. Plate 8 from the monograph 'Merkwurdige phanomene an und durch verschiedene prismen: zur richtigen wurdigung der Newton'schen und der von Gothe'schen farbenlehre', [Remarkable phenomena at and through different prisms to correct Newton's and Goethe's theories of colours] by Johann Friedrich Christian Werneburg (Nuremberg,