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Ocean color is the branch of ocean optics that specifically studies the color of the water and information that can be gained from looking at variations in color. The color of the ocean, while mainly blue, actually varies from blue to green or even yellow, brown or red in some cases. [1]
Dissolved and particulate material in water can cause it to be appear more green, tan, brown, or red. For instance, dissolved organic compounds called tannins can result in dark brown colors, or algae floating in the water (particles) can impart a green color. [11] Color variations can be measured with reference to a standard color scale.
In his essay Nature, the metaphor stands for a view of life that is absorbent rather than reflective, and therefore takes in all that nature has to offer without bias or contradiction. Emerson intends that the individual become one with nature, and the manner of the transparent eyeball is an approach to achieving it.
And there isn't much Biological to make the water green at altitude. Moreover, they should appear reddish brown from the tannins if anything. For example, zooming-in to many of the Cascades alpine watersheds closely and they do indeed appear green, rather than the blue initially. 80.5.219.60 17:58, 26 January 2016 (UTC)
The water color spectrum as seen by a satellite sensor is defined as an apparent optical property (AOP) of the water. This means that the color of the water is influenced by the angular distribution of the light field and by the nature and quantity of the substances in the medium, in this case, water. [2]
Conversely, it is a poor absorber of green and near-green portions of the spectrum. Hence chlorophyll-containing tissues appear green because green light, diffusively reflected by structures like cell walls, is less absorbed. [1] Two types of chlorophyll exist in the photosystems of green plants: chlorophyll a and b. [6]
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Illustration of Emerson's transparent eyeball metaphor in "Nature" by Christopher Pearse Cranch, ca. 1836-1838. Emerson uses spirituality as a major theme in the essay. Emerson believed in re-imagining the divine as something large and visible, which he referred to as nature; such an idea is known as transcendentalism, in which one perceives a new God and a new body, and becomes one with his ...