Sorry, you'll have to deal with my fail paint skills this week since I totally forgot to take the picture I was intending to take...
This rather intimidating, scary thing is actually a collector for pins and needles and the like. No, it's not mine. Yes, it exists in real life. Yes, someone needs to buy this person a REAL pincushion. In any case, it clearly demonstrates electric fields. The magnetic pin cushion keeps the metal pins and needles from escaping. They must have opposite charges, and therefore create a force equal to E*q, or the measurement of the electric field times the charge of the needle. Luckily, this force is greater than the weight force of the needles, or they would all go clattering to the floor in a dangerous mess. Unfortunately most of the needles and pins here are rusty and leave strange rust marks on the fabric when you use them...
Ten points to anyone who can guess the rather odd place where this is from... It's not anywhere that you would expect. :P
Whee for lots and lots and lots and lots and lots of random sewing... 2 done, 30 to go in a week...
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