Phakoscope, for demonstrating accommodation of lens. After Helmholtz, by Sittel, Heidelberg
Image source (VL Image)
Source
Anonymous.
1892.
Harvard Psychological Laboratory in Dane Hall: Interior of a Laboratory Room.
Photography
Related VL People
Related VL Sites
Psychological Laboratory, Harvard University.
Cambridge (MA).
comment
See another figure of this instrument in the <link href="http://www.sil.si.edu/digitalcollections/trade-literature/scientific-instruments/files/51682/imagepages/image88.htm">1899 catalog</link> of the Cambridge Scientific Instruments Co. (no. 261). See a <link href='http://dssmhi1.fas.harvard.edu/emuseumdev/code/emuseum.asp?rawsearch=Number%2F%2C%2Fis%2F%2C%2FWJ0001%2F%2C%2F0%2F%2C%2F0'>colour photograph</link> of the phakoscope in the Harvard Collection of Historical Scientific Instruments.VL Technology
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