Object: A rubber spatula and a wool sweater
Good morning, boys and girls. We are going to do a little scientific experiment. I need a volunteer. (Choose someone with long, straight hair.) Now I'm going to wipe my magic wand on my mystic sweater (Rub rubber spatula vigorously on wool sweater), then I'm going to wave it like this, and I'm going to place it above___________'s head--and what happens? That's right! Her hair stands up! Why is that? That's right. Static electricit…
Dynamic Preaching, Collected Sermons, by King Duncan