Red, blue and yellow spectra, with the solar spectrum mb-artistname Charles Turner The Treasury and the canal

The Treasury and the canal in St James's Park

'The Ladies Contrivance'

has had a flying saucer style car made for his personal use

'Jack Ketch executing sentence on a culprit'

Red, blue and yellow spectra, with the solar spectrum mb-artistname Charles Turner The Treasury and the canalFigures showing red, yellow and blue spectra with curves of maximum intensity (figures 1 3) and their combination into a solar spectrum (figures 4 5). Plate 2 from the paper 'On a new analysis of solar light, indicating three primary colours, forming coincident spectra of equal length', by David Brewster, originally published in Transactions of the Royal Society of Edinburgh, volume 12 (1834) pp. 123 136. Inscribed upper right 'PLATE II. Roy. Soc.