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References
- ↑ "Perspective Machine", The New and Complete American Encyclopedia, John Low, 1810, p.441
- ↑ John Montague, Basic Perspective Drawing: A Visual Approach, John Wiley & Sons, 2013, ISBN 1118414128
- ↑ Leonardo da Vinci, Codex Atlanticus, 1510, reproduced in R. John Williams, The Buddha in the Machine: Art, Technology, and the Meeting of East and West, p.2, ISBN 0300194471
- ↑ Daniele Barbaro, La pratica della perspettiva di Monsignor Daniel Barbaro , Venice, 1559, p. 191, accessed 2016-02-08
- ↑ "Drawing - The discovery of perspective", Heinz Nixdorf Museums Forum, accessed 2016-02-08
- ↑ Perspective machine by James Watt , Science Museum, London, accessed 2020-05-14
- ↑ Watt, James, "Description of a New Perspective Machine", Edinburgh Philosophical Journal, Volume 2, Number 4, Plate 7; Pages 259-262
- ↑ Alexander Dick, Theory and Practice in the Eighteenth Century: Writing Between Philosophy and Literature, Routledge, 2015, ISBN 1317314530. Dick says that the machine was based on Watt's invention but this contradicts the 1765 date given by Watt himself in Description of his Perspective Machine.
- ↑ Ronalds, B.F. (2016). Sir Francis Ronalds: Father of the Electric Telegraph. London: Imperial College Press. ISBN 978-1-78326-917-4.
- ↑ "Perspective Drawing Instruments". Sir Francis Ronalds and his Family. Retrieved 11 Apr 2016.