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Posts tagged cones

November 7, 2016

 

Dog vision is similar to the vision of people with red-green color blindness.

In Dog Eyes

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

June 3, 2016

 

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The Green Door

We don't perceive color in our peripheral vision because we have no cones, which sense light frequencies, on the outer edge of our retina.

November 7, 2015

 

Dogs always see in monochrome.

Your Dog Doesn’t See Colors

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

May 9, 2012

 

Check out his eyes... not his antlers!

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

 

Rods and cones help you be able to see.

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?

February 12, 2008

 

Odors That Push and Pull Pollinators

Ever notice how a little cologne can be attractive, but too much is totally repellent? That principle is used by cycads, an ancient type of cone-bearing tree.

August 2, 2007

 

What’s So Primary about Primary Colors?

With three simple ingredients, a red, a green, and a blue spotlight, you can make any color of the rainbow. Learn more on this Moment of Science.

March 25, 2004

 

The Green Door

Learn about peripheral vision and color on this Moment of Science.

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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