Help make Alexa smarter on Alexa Answers. Sign in with Amazon


How many shades of green can the human eye see?

Thousands, it's the most perceived color for humans. Humans are trichromats, meaning we perceive three primary colors: blue, green and red. The retina in a human eye can detect light between wavelengths of 400 and 700 nanometers, a range known as the visible spectrum.

{{ relativeTimeResolver(1567535166767) }}

Points points 46
Rating 1

Similar Questions
Sign in to view all similar questions

Join Alexa Answers

Help make Alexa smarter and share your knowledge with the world