Leopold Kupelwieser, Schubertiade (detail), 1818. Image via Wikimedia Commons.
Portrait of Sir David Brewster. Courtesy of Wellcome Trust via Wikimedia Commons.
Detail from David Brewster’s “A Treatise on the Kaleidoscope,” illustrating the polyangular kaleidoscope of R.B. Bate, 1819. Image via Wikimedia Commons.
Detail from David Brewster’s “A Treatise on the Kaleidoscope,” comparing the mirror constructions of Kircher (left) and Bradley (right), 1819. Image via Wikimedia Commons.
Brewster type kaleidoscope on tripod mount, by Robert Brettell Bate, c. 1820. © The Board of Trustees of the Science Museum. Courtesy of the Science Museum Group.
Brewster's Patent Kaleidoscope by Philip Carpenter (detail), 1820. © The Board of Trustees of the Science Museum. Courtesy of the Science Museum Group.
Brewster's Patent Kaleidoscope by Philip Carpenter (details), 1820. © The Board of Trustees of the Science Museum. Courtesy of the Science Museum Group.