1820s
Heliography
1827, photographic starting point
Kaleidoscope
Invented in 1816; museum object from 1820; later photography and VJ culture
Thaumatrope
1825, popularized by John Ayrton Paris
Diorama Light Change
1822, Louis Daguerre and Charles Bouton's Diorama theatre
Lithophane
1820s; patented in France by Paul de Bourgoing in 1827
Steel Engraving
1820s onwards, steel-plate book illustrations