02
Feb
10

Why is the ocean blue?


Think it must be something to do with reflection or the fact that lot of water (as in the depth) makes white look blue…

Lemme figure this out.

There are several theories according to Everyday Mysteries

  • Blue wavelengths are absorbed the least by the deep ocean water and are scattered and reflected back to the observer’s eye
  • Particles in the water may help to reflect blue light
  • The ocean reflects the blue sky

However, the ocean can be many other colors depending upon particles in the water, the depth of the water, and the amount of skylight. (Yellow Sea looks yellow because of yellow sand that the rivers bring in)

Technically, Wavelengths of light pass through matter differently depending on the material’s composition. Blue wavelengths are transmitted to greater depths of the ocean, while red wavelengths are absorbed quickly. Water molecules scatter blue wavelengths by absorbing the light waves, and then rapidly reemitting the light waves in different directions. That is why there are mostly blue wavelengths that are reflected back to our eyes.

However, sometimes the ocean also looks green. Rationale?… May be because there is an abundance of plant life or sediment from rivers that flow into the ocean. The blue light is absorbed more and the yellow pigments from plants mix with the blue light waves to produce the color green.

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So what’s this blog about?

Another attempt? Well yes. Attempting to figure out another sustainable model (there are some other attempts going on parallel-ly). Well, we have a lot of questions in mind. we read up stuff, we do some research to find answers to these questions. This is an attempt to publish that little 15-20 minute research.

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