In the study of supersonic flight,
Schlieren Photography observes the density gradient of air as it interacts with aircraft.
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 Pond s. In the case of salt water, sharp gradients can lead to stratification of different concentrations of salinity. This is called a
Halocline .
The understanding of what is at the centre of the earth, the
Earth Core , requires the framework of density gradients in which elements and compounds then interact.
Fast Breeder Nuclear Reactor at the core of the earth is one theory by reason of density gradient and supported and espoused by
J. Marvin Herndon (7 & 8).
In the study of population, the density gradient can refer to the change in density in an urban area from the center to the periphery.
- 7. Herndon, J. Marvin (1994) Planetary and Protostellar Nuclear Fission: Implications for Planetary Change, Stellar Ignition and Dark Matter Proceedings: Mathematical and Physical Sciences, Vol. 445, No. 1924 (May 9, 1994) , pp. 453-461
- 8. Herndon, J. Marvin (1996) Substructure of the inner core of the Earth Vol. 93, Issue 2, 646-648, January 23, 1996, PNAS
