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:
“Oh, a friend! How true is that old saying, that the enjoyment of one is sweeter and more necessary than that of the elements of water and fire!”
—Michel de Montaigne (1533–1592)
“A kind heart he hath. A woman would run through fire and water for such a kind heart.”
—William Shakespeare (1564–1616)
“Here is no water but only rock”
—T.S. (Thomas Stearns)
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