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Posts tagged vision

March 19, 2012


target on target range

Ready, Aim, Shoot! How Marksmen Use Heartrate To Shoot

Research shows that marksmen shoot most accurately when their hearts' rhythm increases from eight to twenty beats per minute over their resting heart rate.

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?

November 15, 2011


thaumatrope creation

What Is A Thaumatrope?

Did you know that the thaumatrope was invented by an English physician named J. A. Paris in 1926?

May 6, 2011


man in 3d glasses

3D: Harmful To The Eyes?

3D TV and movies seem to be all the rage but are they harmful to eyes?

November 12, 2010


Corner of a room

Visual Systems, Binocular Vision, And Wall Color

Why does the corner of the room, where two walls and the ceiling meet seem to show two different wall colors?

May 27, 2010



Debunking Common Eye Myths

When it comes to common eye myths, what is true and what is false?

March 15, 2010



What Is Saccade?

Look in the mirror... do you see your eyes move? Learn about saccade.

February 4, 2010



Cats And Colors

Have you ever wondered why your cat cannot see color?

January 26, 2009


Baby scops owl with head turned

Staring Eyes and Swiveling Necks

Owls use their giant, staring eyes and that amazingly swivel-prone neck as part of an overall system for catching prey.

January 20, 2009


Close up of frog in water

You Can’t Eat What You Can’t See

One of the most impressive feats of muscular coordination in nature is the very common instance of a frog darting out its tongue in order to catch a fly.

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