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Posts tagged light

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_blue_eyes

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

 

candle_snuffer

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?

January 18, 2011

 

light lines created by a flashlight

How To Calculate The Speed Of Light

Learn how Ole Roemer learned that light does take time to travel.

January 13, 2011

 

A telescope set up outside

Venus Glows In The Dark!

Venus may appear to glow under moonlight but the planet also glows in infrared light.

November 19, 2010

 

a city with the moon above it

The Dark Side Of The Moon Does Not Exist!

There is no place on the moon that is completely dark. Learn why!

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