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Posts tagged rods

November 7, 2016

 

A pug looks into the camera. Its mouth is open and its tongue is visible.

In Dog Eyes

While dogs can't see colors as well as most people do, they see five times better at night.

November 7, 2015

 

Close up on a pug's face. The dog's eyes look ancient and sad.

Your Dog Doesn’t See Colors

Why doesn't your dog notice his dark green toy on your dark red rug?

May 9, 2012

 

reindeer

Reindeer Have Ultraviolet Vision

Scientists tested eighteen reindeer with light, and found that their eyes responded to both visible light and ultraviolet.

January 24, 2012

 

two people laying in the grass with their hands over their eyes

Night Vision And Humans: Why Can’t We See Color?

When we are in a fairly dark room, or outside at night away from lights, we can still see, but we can't see the colors of things very well. Why is that?

September 27, 2003

 

Star Light, Star White

The back of your eye, called the retina, has two kinds of cells: rods and cones. In bright light the cones are what we use, while in dim light the cones are less active and the rods take over.

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