Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 527
ch the muscles of the eyes take in our perceptions of formhas been already alluded to, and it may be interesting to illustrate thispoint by a curious example or two of illusions arising from their move-ments, If our reader will glance at Fig. 247, he will see that the lines, a band c d, appear to…
Inventions
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