Spectra from light shone through prisms Finish:Stretched When conditions are favourable the

When conditions are favourable the men often work for 19 hours a day

or I shall Quarrel

The plate was printed with an English extract of the letter in Philosophical Collections ed

It was a time when the insurrectionist organisation

Spectra from light shone through prisms Finish:Stretched When conditions are favourable theOptical 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,