But convection currents are ultimately at the mercy of temperature differences because these are what create pressure differences in the first place. The pressure difference between two locations is called a pressure gradient, and the force that actually moves air as wind is called the pressure gradient force.
oÂ·nus. n. 1. A difficult or disagreeable responsibility or necessity; a burden or obligation. 2. Responsibility for an error or fault; blame: Each side wants to avoid the onus of having started the disagreement. 3.
The fundus is the portion of the inner eye that can be seen during an eye examination by looking through the pupil. Fundus is the Latin word for the bottom. In medicine, fundus refers to the bottom or base of an organ.he fundus is the portion of the inner eye that can be seen during an eye examination by looking through the pupil. Fundus is the Latin word for the bottom. In medicine, fundus refers to the bottom or base of an organ.