Ragnar Granit
Facts
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.
Nobel Prizes and laureates
Six prizes were awarded for achievements that have conferred the greatest benefit to humankind. The 12 laureates' work and discoveries range from proteins' structures and machine learning to fighting for a world free of nuclear weapons.
See them all presented here.
