If something sounds hard and you pay for it, and very little effort is put to explain it clearly , it probably gonna make it "important" , and so it is required ... You see my point?
Is there a temperature variable to this Fick's law? we know that increasing temperature in a system increases more collision within the system. Does increasing temperature proportionally increase diffusivity of material?
This is stupid. why am i paying money to go to college. you just explained something perfectly in about 10 minutes that my professor could not in one hour
I am conducting water barrier testing of a nanocomposite as per ASTM D570. Basically immersing the samples in water and testing the weight regularly in order to draw the graph of percentage of relative mass uptake vs. square root of time and ultimately calculate diffusion coefficient. Now, the ASTM standard asks us to maintain the thickness constant at 3.2 +/- 0.3 mm. Why so ? If Diffusion coefficient is a constant why thickness becomes so critical.
The equation’s notations used here are very limited and can be misleading. T should be reserved for temperature. Concentration is better than pressure.
good video ... i have doubt....i read in treybal that ,if pressure is decreased diffusion will be faster,because the no. of collision encountered by the molecules will be less..so the molecules moves faster ...plz help
Wooly Tomcat It does, but not anywhere close to the temperature differences discussed here, if you were doping a silicon wafer with germanium for example, the differences in diffusion due to temperature is very small on a per degC basis. However if you started diffusing at 0.1*Tmelt, and then compared it to 0.5*Tmelt, you would notice a considerable improvement.
