Remarkable Effects On The Visual Nerves By Looking Through





differently-coloured Glasses.



After looking through green spectacles, the white paper of a book

will, on first taking them off, appear to have a blush of red; and

after looking through red glasses, a greenish cast. This seems to

intimate a relation between green and red, not yet explained.





Refraction Of Light Remarkable Properties In Certain Plants facebooktwittergoogle_plusredditpinterestlinkedinmail

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