Ingenious use of hand shapes to recall the structure of formulas in Electrodynamics. The kernal of this wisdom is that the hand is one of the few “devices” that must be allowed in any testing situation for students. Yes, I know there is an iPhone app for each formula that plots in 3D, etc. But what if you had solve these equations after a ship wreck?
When I was a kid it took me a long time to learn this. So, I thought it would useful to put a link to it here. The transformations are from rectangular to polar, cylindrical and back in a useful structured approach.
This is a link to Dan Fleisch’s site for his book. He is an Associate Professor in the Department of Physics at Wittenberg University, where he specializes in electromagnetics and space physics. He is the author of A Student’s Guide to Maxwell’s Equations published by Cambridge University Press in 2008
Here is a clever infographic, that just might fit into the margins of my blog. I definitely would have had the present on top, if I were to redo this….
This sums up a lot, but as you can see, it ignores a lot of details. The key to designing good diagrams is being selective. What do you want to show, versus all the other stuff you ignore. Most of humanity and it’s accoutrements are ignored here…