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how to calculate the average gradient. Darcys law is a simple proportional relationship between the instantaneous discharge rate through a porous medium the viscosity of the fluid and the pressure drop over a given distance. The Gradient 4 2 2.
AG sum sum Gmag sqrt 2 size X1-1 size X2-1. You might remember from high school maths that gradient is simply defined as riserun that is the distance travelled vertically b in the diagram below divided by the distanced travelled horizontally a in the diagram below. Do the same with the second point this time as x₂ and y₂.
Meter foot etc of horizontal travel there is 11336 units of altitude gain.
You would use a topographic map for this as well as the map scale to calculate distance. AG sum sum Gmag sqrt 2 size X1-1 size X2-1. We know how to calculate the average gradient between two points on a curve but we need two points. Gradient decimal Rise Run 280m 247m 11336 Here for every 1 unit eg.