Water
A steep density gradient in a body of water can have the effect of trapping energy and preventing convection, such a gradient is employed in solar ponds. In the case of salt water, sharp gradients can lead to stratification of different concentrations of salinity. This is called a Halocline.
Read more about this topic: Density Gradient
Famous quotes containing the word water:
“For months it hasn’t known the taste of steel
Washed down with rusty water in a tin.
But standing outdoors hungry, in the cold,
Except in towns at night, is not a sin.”
—Robert Frost (1874–1963)
“I asked, “What happens, father, when you die?”
He told where all the running water goes,
And dressed me gently in my little clothes.”
—Robert Pack (b. 1929)
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