Ragnar Granit

Facts

Ragnar Granit

Photo from the Nobel Foundation archive.

Ragnar Granit
The Nobel Prize in Physiology or Medicine 1967

Born: 30 October 1900, Helsinki, Russian Empire (now Finland)

Died: 12 March 1991, Stockholm, Sweden

Affiliation at the time of the award: Karolinska Institutet, Stockholm, Sweden

Prize motivation: "for their discoveries concerning the primary physiological and chemical visual processes in the eye."

Prize share: 1/3

Work

Our vision works by the light around us being captured by a large number of light-sensitive cells located in the retinas at the back of our eyes. After a series of nerve switches and conversions of chemical and electrical signals, this results in visual impressions. Using very sophisticated electrodes, Ragnar Granit was able to study the electrical impulses from the retina's cells. In studies conducted from the 1930s to the 1950s, he demonstrated that there are different types of cones (the cells that enable color vision) and that these are sensitive to light of three different wavelengths.

To cite this section
MLA style: Ragnar Granit – Facts. NobelPrize.org. Nobel Media AB 2018. Thu. 15 Nov 2018. <https://www.nobelprize.org/prizes/medicine/1967/granit/facts/>

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