OMG science
fromwww.scientificamerican.com
2 days agoA curious secret of color vision revealed by scientists
The eye focuses on the most prominent color in the environment, not just the brightest or middle wavelengths of light.
When I take a walk in my neighborhood, my white hair, dark glasses, and white cane shout to the world that I am an older blind man. Some passers-by assume that I am lost and ask if I need help. It is true that blind people sometimes need help when using a mobility aid (a white cane or guide dog) to navigate their physical environment. However, once a person becomes proficient at traveling with a mobility aid, they typically need much less help.