VL Technology [tec2948]

		Newton's disk, 80 ctm. in diameter. By Queen, Philadelphia
	Source	Anonymous. 1892. Harvard Psychological Laboratory in Dane Hall: Instruments for Experiments on Sight. Photograph. (Harvard University Archives - HUPSF Psychological Laboratories (7))
	People
	Sites	Psychological Laboratory, Harvard University (1893)
	Related Literature	Münsterberg, Hugo. 1893. Psychological Laboratory of Harvard University. Cambridge, Mass.: University Press of Cambridge, Mass. (description and figure).
	Comment	See the same disk on another photograph from the same set. See another figure of this disk in a Queen catalog from 1874 (no. 6190). In 1884, another Queen catalog references Newtons color disk (no. 639), but does not describe it.
	Description
ISSN 1866-4784: reference - xlink