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Is the Sky really Blue? Are the Trees really Green?

Updated on September 23, 2008
Outside of Bakersfield, California.  Photo Credit:  Unknown
Outside of Bakersfield, California. Photo Credit: Unknown

This is a question I grew up asking. Not as a child asks the normal questions about the world, but as a true informational question. My parents, highly educated but experimental-thinking, debated before I was born on teaching their child the "wrong" colors for things. Specifically, that the grass was blue and the sky was green.

In the end, they decided to teach me "normal" colors, but also bring me up bilingual. So, in a sense, they did their experiment.

Color Categories in Thought & Lang
Color Categories in Thought & Lang

A scientific study of colors and visual perception across cultural and linguistic boundaries.

 

Words as Labels

Words are, essentially, how we label and categorize the world around us. To communicate, people need names for objects, distinguishing characteristics, changes, and other representations. Basically, our words recreate our lives in conversation.

Try speaking without using any nouns or verbs. Basic language probably started out with the proverbial "grunt and point", then someone decided that a particular sound meant a particular object. That person taught another person that sound-object connection, and it became a label. The label (word) was passed on from person to person, with more labels added for other objects, which in turn became a language.

Photo Credit:  Unknown
Photo Credit: Unknown

What Colors Are

Colors are different variances in the light spectrum. When light refracts, "white" light is rebounded into various wavelengths. Each specific length defines the color we see. All light particles at one particular wavelength are perceived as being the same color. As well, particles at close wavelengths to that color are perceived as that color.

There are infinite variations in wavelengths, so there are infinite variations in color. Our brains group the wavelengths into categories to keep track of them. In the picture at right, how many variations of blue do you see?

Photo Credit:  Unknown
Photo Credit: Unknown

Defining the Indefinite

If there is a color in-between red and orange, like some of the leaves in this picture, how do our brains decide which it is? This is where words come in. If you have been taught that "red" only means the color of fire engines, then the leaves will look orange to you. If you have been taught that "orange" only means the color of the inside of a pumpkin, then the leaves will look reddish to you. The leaves on the ground are from the same trees, but they look different colors than the ones still on the branches.

Colors in other Languages

Anyone who has ever learned another language by immersion knows how difficult it is to remember which word goes with which object or concept at first. After much repetition, you learn that what you are used to calling "red" in English is "rojo" in Spanish, "rød" in Norwegian, or "guduud" in Somali. While you are learning this, though, your brain is saying "No, it's red". In essence, this is how we learn what things are called in our first language as well.

So why is the Sky Blue and a Tree Green?

So, the sky is "blue" because someone thought up the color name and attached it to the color. A tree is "green" for the same reason. Anything can be called any pattern of sounds, just so long as the same pattern is used for the same thing consistently. It becomes a word when it is taught to others as a paired sound-object.

If my parents had taught me that the sky was green, then I would call the color of most people's jeans "green" too. As it is, I call the sky color (and jeans color) both "blue" and "blå".

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    • KT pdx profile imageAUTHOR

      KT pdx 

      8 years ago from Vancouver, WA, USA

      Good point, Nicola! Very interesting to think about.

    • profile image

      Nicola 

      8 years ago

      It makes no difference, but its interesting to think - what if different people 'see' different colours but as we grow up and associate them with what is taught it wouldn't really matter if blue was red in someone else's eyes because they would still call it blue.

      I guess we will never know if we are all seeing the same colours.

      Even though we know which cells and pigments in the eye respond to the same sort of light wave length (colour) how can we know how the brain then translates that information in the picture we see in our heads?

    • profile image

      Feline Prophet 

      10 years ago

      It's all a matter of perception, isn't it? :)

    • KT pdx profile imageAUTHOR

      KT pdx 

      10 years ago from Vancouver, WA, USA

      Thank you.

    • profile image

      voiceinsociety 

      10 years ago

      this is very interesting. nice post =]

    • Shaan.S profile image

      Muhamed Shan 

      10 years ago from Doha

      thats really nice...

    • KT pdx profile imageAUTHOR

      KT pdx 

      10 years ago from Vancouver, WA, USA

      You're welcome. Thanks for posting the requst. :)

    • AEvans profile image

      Julianna 

      10 years ago from SomeWhere Out There

      I now have Peace since you have provided the answer as it has been racing around in my brain for a long time. Thank you for writing this Article as it gives us a better understnding and could provide us finally with a clear answer.

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