Why Is ...

Why Sky Blue
Grass Green
Mars Red
Ocean Salty
Clouds White
Wind Blow
Steel Stainless
Sunsets Red
Water Wet
Moon Big
Snow White
Clocks Clockwise
Oceans Blue
Uranus Red
Metal Shiny
Birds Appear
Cat Feet / Toast

What Is ...

Meaning of Life
Speed of Light
Hydrogen Cars
Time Is It
Dog Flu
A Blog

Where ...

Do Babies Come From
Did Civilization Begin
Do Holes in Ozone Come From
Does Lightning Begin

Who ...

Discovered Earth Sun
Invented Computer
Invented Lightbulb
Invented Penicillin
Invented Polio Vaccine
Invented Toilet

How ...

Do Birds on a Wire Balance Themselves
Do Hurricanes Form
Do Yo-Yos Work

More Info

Contact Us
About Us

For Suspect Science Stories, Jokes, and Other Fun, Subscribe to Our Newsletter





Why Is The Sky Blue

Why is the sky blue: Discussion

Transmitted light (from the sun, light bulbs, fire, etc) is made up of a spectrum of colors. The longest wavelengths of light are on the red end of the spectrum and the shortest wavelengths are on the blue/violet end of the spectrum.




When transmitted light such as sunlight enters our atmosphere it collides with the oxygen and nitrogen atoms. The color with the shorter wavelength is scattered more by this collision. Because violet and blue are the shortest wavelengths the sky appears to be violet / blue. But because our eyes are more sensitive to blue light than they are violet light, we perceive the sky as blue.

Our eyes contain thousand of rods and cones, which are the receptors for light. Whenever one of the 3 Stooges pokes you in the eye you see a giant blue spot. This is because the blue receptors have been activated. Blue is one of the primary colors and thus more easily activated and seen by our eyes.

Blue is also how I feel when my baby leaves and my hound dog dies. Also, how I feel when the cops pull me over and I see their blue lights flashing in my rear view mirror. Then, again, blue is the color of the K-mart special, so this color isn't all bad.

Why is the sky blue: Summary

So, why is the sky blue? It is because blue light from the sun strikes the air molecules and scatters and our eyes perceive it as blue.

Why is the sky blue: Short Summary

Why is the sky blue, you ask? Blue in sunlight collides with air molecules and our eyes see it as blue.


Why is the sky blue: Condensed

Sunlight collides with air, scatters blue wavelengths.

Why is the sky blue: Ultra-Condensed.

You are seeing things. Stop asking.












 © 2016 WhySkyBlue Enterprises, All rights reserved