One of my many “parlor tricks” is to leave a restaurant with the salt shaker balanced on a single grain of salt. My kids just sigh and take it for granted now. It might look like a magic trick, but the the salt shaker balancing act is really a feat of science, plain and simple. The beveled edge of most restaurant salt shakers only needs a tiny flat edge to lean against, and voila: magic.
It’s also really easy to do. Easy, and impressive.
Just pour a small pile of salt onto the table top, or a plate, or any absolutely flat surface. Set the shaker into the salt and press until the shaker is well into the salt. Now, tip it and start trying to balance. There’s no rhyme or reason to this part; you just have to tip and balance until you feel the shaker settle, and then you let go. You’ll know when you can remove your hand. You’ll just. . . . know. Once the shaker is balanced, carefully blow all the rest of the salt pile away. All you really needed was one grain.
This is an activity that can easily become a habit.
Grains of salt are not symmetrical; they’re fairly square-ish but not perfect. They do, however, have several facets, or flat sides, and that’s what your salt shaker will find to lean on.
A salt shaker will balance more easily than will the pepper shaker because the weight of the salt helps with the balance. Pepper is a lot lighter. Oh, it will eventually balance, too, but it’s a lot easier to use the salt shaker.
If the shaker has even a slightly beveled bottom edge, balancing it is easier, but with some practice, you’ll be able to balance almost any kind of container on a grain of salt. Pop cans, glassware, coins, napkin dispensers. . . just be careful. A full or partially full container will balance more easily than will an empty container. You need a little ballast to lean against the salt facet.
My father used to say that he spent a lot of tuition money for me to go to college and learn this trick all on my own in the cafeteria, but quite honestly, I’ve gotten a lot more enjoyment and actual classroom use from the balancing salt shaker demonstration than I got from Intro to Aztec Sociology 216. Not but what all that digging into the human heart with the bare hands wasn’t interesting and informative. . . .I mean, when I saw that heart removal scene in “Indiana Jones and the Temple of Doom,” I understand exactly what was happening. But I’d still rather share the salt shaker balancing act.
Jane Goodwin is a professor of expository writing at Ivy Tech Community College, a hands-on science teacher for College for Kids, a professional speaker and writer, and a social media liaison for Steve Spangler Science. She wanted to be a ballerina and an astronaut, but gravity got the better of her.