For a few years now, I’ve had this hare-brained idea to try to separate the layers of polarizing film from a scrap LCD panel and make a polariscope out of them. So whenever I come across a dead one I tear it apart and do some experimenting. Probably been into half a dozen by now. But I’ve probably learned as much, or more, about how they actually work by watching Bill Hammack’s video this week. As always, Bill’s work has something to offer novices, experts, and those, like myself, who know just enough to be dangerous. [Thanks, Bill!]