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:
“of you i
sing: land of Abraham Lincoln and Lydia E. Pinkham,
land above all of Just Add Hot Water And Serve—
from every B. V. D.
let freedom ring”
—E.E. (Edward Estlin)
“As the hart panteth after the water brooks, so panteth my soul
after thee, O God.”
—Bible: Hebrew Psalm XLII (l. XLII, 1)
“The land may vary more;
But wherever the truth may be—
The water comes ashore,
And the people look at the sea.”
—Robert Frost (1874–1963)