You’ll need the following items to complete this lab session. (The standard kit for this book, available from www.thehomescientist.com, includes the items listed in the first group.)
Leads, alligator clip (2)
Batteries, 9V transistor (5, 7, or 9)
Gel casting comb materials (see text)
Marking pen (Sharpie or similar)
Plastic containers (see text)
Tape (electrical or masking)
There’s a time-honored custom in science: we scientists build our own apparatus. Not always, of course, nor even most of the time. Nowadays, anyway. Sometimes it’s cheaper, easier, and faster just to buy what we need. But when we need ...