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:
“it
was my first doll that water went
into and water came out of much
earlier it was the diaper I wore
and the dirt thereof and my
mother hating me for it”
—Anne Sexton (1928–1974)
“The senseless drowned
Have faces nobody would care to see,
But water loves those gradual erasures
Of flesh and shoreline, greenery and glass,”
—Howard Moss (b. 1922)
“All that could run or leap or swim
Whether in wood, water or cloud,
Acclaiming, proclaiming, declaiming Him.”
—William Butler Yeats (1865–1939)