Weather-Ready Nation; Cooperative Observers; Daily Briefing; Damage/Fatality/Injury Statistics; Forecast Models; GIS Data Portal; NOAA Weather Radio; Publications; SKYWARN Storm Spotters; StormReady; TsunamiReady; EDUCATION . Be A Force of Nature; NWS Education Home; NEWS . NWS News; Events; Social Media; Pubs/Brochures/Booklets ; NWS Media Contacts; SEARCH
The gradient is a fancy word for derivative, or the rate of change of a function. Itâs a vector (a direction to move) that. 1  Points in the direction of greatest increase of a function (intuition on why)  Is zero at a local maximum or local minimum (because there is no single direction of increase)
So let's put it all together. Concentration gradient is the process by which particles, which are sometimes called solutes, move through a solution or gas from an area of higher number of particles to an area of lower number of particles. The actual movement is called diffusion.