Monochromatic lamps and filtered spectra Finish:Stretched 'Two Victims of the Turf'

'Two Victims of the Turf'

Hjõrne is shown wearing a shoulder-length wig and a neck-cloth or cravat

a faint impression'

1927 Bugatti Type 41 Royale

als referirender Bergrath bei der k: k: Hofkammer im Munz und Bergwesen

Monochromatic lamps and filtered spectra Finish:Stretched 'Two Victims of the Turf'Figures showing monochromatic lamps fuelled by alcohol diluted in water to produce a yellow flame (figures 1 3), with views of the effects on the spectrum created by filtering light through various types of coloured glass (figure 4 numbers 1 16). Plate 28 from the paper 'Description of a monochromatic lamp for microscopical purposes, &c. with remarks on the absorption of the prismatic rays by coloured media.', by David Brewster, originally published