Mathematical Definition
In general, a lapse rate is the negative of the rate of temperature change with altitude change, thus:
where is the lapse rate given in units of temperature divided by units of altitude, T = temperature, and z = altitude.
Note: In some cases, or can be used to represent the adiabatic lapse rate in order to avoid confusion with other terms symbolized by, such as the specific heat ratio or the psychrometric constant.
Read more about this topic: Lapse Rate
Famous quotes containing the words mathematical and/or definition:
“It is by a mathematical point only that we are wise, as the sailor or the fugitive slave keeps the polestar in his eye; but that is sufficient guidance for all our life. We may not arrive at our port within a calculable period, but we would preserve the true course.”
—Henry David Thoreau (1817–1862)
“No man, not even a doctor, ever gives any other definition of what a nurse should be than this—”devoted and obedient.” This definition would do just as well for a porter. It might even do for a horse. It would not do for a policeman.”
—Florence Nightingale (1820–1910)