Five tuning-forks, with resonators, tuned to the characteristic notes of the vowels. After Helmholtz, by Koenig, Paris
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 a color photograph of the tuning forks in the <link href='http://dssmhi1.fas.harvard.edu/emuseumdev/code/emuseum.asp?rawsearch=Number%2F%2C%2Fis%2F%2C%2FWJ0010%2F%2C%2F0%2F%2C%2F0'>Harvard Collection of Historical Scientific Instruments</link>.VL Technology
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