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Posts tagged light

January 2, 2012


plane overhead

Why Is It So Difficult To Spot A Plane In The Air?

How many times have you heard a jet plane going over but not been able to find it even though you were looking toward where the sound was coming from?

November 16, 2011




Are you familiar with the study done by Wolfgang Miltner at Friedrich Schiller University in Germany?

October 31, 2011


a hand holding a yellow highlighter

Seeing Yellow

Why is yellow still the most popular highlighter color?

October 17, 2011


Orange full moon behind a tree branch

That Spooky Orange Glow

Why is the moon sometimes orange or red? Why is the sky blue? These questions are closely related!

October 7, 2011



Baby Blues

Did you ever wonder why newborn babies have blue eyes? Or how human beings get the various eye colors we have?

August 1, 2011


blue-green canvas shoes that are damp

Why Do My Clothes Change Color When They Get Hit With Water?

We've all seen how when we splash water on cloth, the places where the water hits appear darker than the rest. Does the cloth change color when wet?

April 8, 2011



Snuff: How Candle-Snuffers Work

Why doesn't the flame just continue to burn underneath the bell, no matter how flat you crush it? The answer is air.

April 6, 2011


statue staring at the sun

Why Do I Sometimes See Tiny Moving Dots?

Those tiny dots are actually blood cells moving in the retina of your eye.

March 21, 2011


leaves competing for sunlight

Green Plants Can Sense Future Competition For Sun

Scientists have found evidence that plants can sense the presence of neighbors that might cast shadows on them at some future time.

January 21, 2011


A blackhole in space

What Is A Black Hole?

Black holes were always the most dangerous thing when traveling through space in science fiction shows. What are black holes and how do they form?

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