why is water blue?

trevorjohnson83

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As you descend down in the water and look at the sun it gradually turns blue.

My guess, the light has to push harder to get through the water.

red shift blue shift though no Rayleigh scattering'.

Any other guesses?
 
As you descend down in the water and look at the sun it gradually turns blue.

My guess, the light has to push harder to get through the water.

red shift blue shift though no Rayleigh scattering'.

Any other guesses?
oceanblue.webp



The ocean is blue because water absorbs colors in the red part of the light spectrum. Like a filter, this leaves behind colors in the blue part of the light spectrum for us to see.


The ocean may also take on green, red, or other hues as light bounces off of floating sediments and particles in the water.


Most of the ocean, however, is completely dark. Hardly any light penetrates deeper than 656 feet, and no light penetrates deeper than 3,280 feet.

 
As you descend down in the water and look at the sun it gradually turns blue.

My guess, the light has to push harder to get through the water.

red shift blue shift though no Rayleigh scattering'.

Any other guesses?
Water absorbs longer-wavelength colors (red, orange, yellow) from sunlight, while absorbing very little blue light, which passes through and scatters.
 
As you descend down in the water and look at the sun it gradually turns blue.

My guess, the light has to push harder to get through the water.

red shift blue shift though no Rayleigh scattering'.

Any other guesses?
For the same reason people are BLue?

Is water or the sky really blue?
 
Rivers look brown most of time from above. Dirty looking mist always. Not blue So stop on me!

Now you will say its sedimentorman made. The ocean has sediment too?
 
When you're down at a depth where the sun appears blue, the speed of light has slowed but frequency stays the same so the frequency covers a shorter distance per unit time which is to the observer at that depth going to appear that the wave moving past has a more compressed wavelength.

what's your answer Chuz Life?
 

Comparison of the Mechanics

FeatureStandard "Filter" ModelYour "Compression" Model
Variable ChangeFrequency remains constant; amplitude drops to zero for red.Velocity drops; wavelength compresses; frequency stays constant.
Cause of BlueOnly high-frequency waves survive the "filter."The medium reshapes the wave into a "blue" geometry.
Role of DensityDensity acts as a wall/absorber.Density acts as a compressor/transformer.
 
When you're down at a depth where the sun appears blue, the speed of light has slowed but frequency stays the same so the frequency covers a shorter distance per unit time which is to the observer at that depth going to appear that the wave moving past has a more compressed wavelength.

what's your answer Chuz Life?
Light waves, frequencies, etc are measurable.

Even underwater.

There is no need to guess at such things.

mudwhistle 's link is one of many that can be found.

Light is refracted, diffused, and filtered, interacting with all sorts of things in the water as it passes through the depths.

The longer wavelengths (red spectrum) are attenuated first, and the shorter wavelengths (blue spectrum) penetrate deeper.
 
15th post
the light speed slows down in the water but frequency to the observer stays the same. So for the frequency to be the same at a slower speed, the wavelength shortens and compresses causing blueshift to the observer.

Light waves, frequencies, etc are measurable.

Even underwater.

There is no need to guess at such things.

mudwhistle 's link is one of many that can be found.

Light is refracted, diffused, and filtered, interacting with all sorts of things in the water as it passes through the depths.

The longer wavelengths (red spectrum) are attenuated first, and the shorter wavelengths (blue spectrum) penetrate deeper.
If that were true I would appear blue to another observer if both of us were underwater same with Rayleigh and the sky. YOu are a photon brain after all it seems? : / you lunged at me for suggesting such before?
 

2. Why the ground isn't blue (The "Consensus" Logic)​

If the sky is scattering blue light everywhere, why aren't we walking around in a blue-tinted world? The consensus offers two main reasons:

  • Dominance of Direct Light: While blue light is scattered, the vast majority of sunlight (the "white" beam containing all colors) comes directly from the sun to the surface without hitting enough air molecules to be diverted. The direct "white" light is so much brighter than the scattered "blue" sky light that it washes it out.
  • Chromatic Adaptation: Your brain has a "white balance" algorithm. If there is a slight blue tint (which actually does exist in shadows, as they are lit primarily by the blue sky and not the direct sun), your brain automatically subtracts that blue to make whites look white.
 
the light speed slows down in the water but frequency to the observer stays the same. So for the frequency to be the same at a slower speed, the wavelength shortens and compresses causing blueshift to the observer.


If that were true I would appear blue to another observer if both of us were underwater same with Rayleigh and the sky. YOu are a photon brain after all it seems? : / you lunged at me for suggesting such before?
The science is the science. Neither you nor I are factors in what the science proves.

Good luck with your next attempts at englishing.
 
The science is the science. Neither you nor I are factors in what the science proves.

Good luck with your next attempts at englishing.
eh I'm calling you out chuz you neither have anything to say about my reasoning nor my questions about the photon. Almost like you are trolling....
 
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