Gunnar Nils Toivo Svaetichin (13 January 1915 – 23 March 1981) was a Swedish-Finnish-Venezuelan physiologist who, in 1956, showed by examining the external layers of fish retinas that electroretinograms display particular sensitivity to three different groups of wavelengths in the areas of blue, green and red. This provided the first biological demonstration in support of the Young-Helmholtz trichromatic theory.
Gunnar Nils Toivo Svaetichin (13 January 1915 – 23 March 1981) was a Swedish-Finnish-Venezuelan physiologist who, in 1956, showed by examining the external layers of fish retinas that electroretinograms display particular sensitivity to three different groups of wavelengths in the areas of blue, green and red. This provided the first biological demonstration in support of the Young-Helmholtz trichromatic theory.
Source: Wikipedia "Gunnar Svaetichin" · CC BY-SA 4.0
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