what does it mean when people say that other animals can see “more colours” than humans?
In: Biology
Humans have three types of ‘cone cells’ in their eyes that are sensitive to ‘visible’ light, from red to violet. I put ‘visible’ in quotes because we call it that due to being the range of human sensitivity, but there’s nothing inherently special about light in the range below red or above violet (infrared and ultraviolet). Some animals have eyes that are sensitive to different ranges, and can see a larger or different spectrum of light colors.
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