Electric Field and Flux lab demo.
Overview and Background
We have a physics lab where students use a loop over lines of electric flux, and record the number of lines as a function of normal vector angle of the loop area. Plotting these, they discover the flux Phi = A B cos(theta). Previously we used sticks in styrofoam and a pipecleaner loop. I thought I'd try to make something a bit nicer. This is about 10x10x13, and takes about 180 m of filament for the main thing. I suggest printing the 'loop' using a different color for contrast.
Lesson Plan and Activity
See Tutorials in Introductory Physics by McDermott et al (Dept Physics, U Washington), p. 77 "Electric Field and Flux"