December 28, 2020
I came across the phrase, wandering with a sense of wonder, while researching ideas for my previous blog, Photography as Meditation. Alice Donovan Rouse, in her blog titled Photography and Meditation wrote, “I realized that wandering with a sense of wonder embodies the same methodology as yoga—it’s an exercise in focus and acceptance of whatever it is we may encounter along the way.”
That’s exactly how I envision my ‘picture walks’ –as wandering with a sense of wonder. On most of my ventures, I set out with no particular goal in mind other than to find whatever it is that I think is pretty or interesting– and take a picture. It might be a beautiful bird or butterfly, but it might just as easily be a rock or a fungus. It might even be a single sound that catches my attention and sends me off in a different direction.
About two weeks ago, I was out taking pictures at the Wolf Lake State Fish Hatchery in Mattawan, Michigan, and was mystified by a sound in the distance, a sound I had never heard before. At first, I thought it might be a bird or maybe even an injured animal, but quickly divested myself of that idea when I decided it didn’t sound like any living thing on this planet! It sounded more like something from outer space!
My curiosity was getting the better of me when I spotted two people in the distance bending down close to the ground as if they were examining something quite small. When they stood up, it appeared as if they were throwing these things into the pond— and that’s when the strange noises began! It happened again and again as they threw stuff into the pond. They were far too distant for me to see exactly what they were throwing, but the most likely answer was rocks. All of a sudden, the proverbial light went off in my head! They were throwing stones across an ice-covered pond!! Fascinating!
Once the couple had moved out of range, I started experimenting for myself. The first rock I found was too small and made a disappointing ‘click-click-click’ sound across the pond. The second stone was too big and crashed unceremoniously through the thin ice. After a dozen or so rocks of various sizes and two small ponds with varying degrees of ice, I decided that a rock that was a little smaller than my fist made the best ‘pew-pew-pew’ sound as it skittered across the ice. Take a listen…
Once I returned home and could do a little research on the subject, I found an article by Mark Mancini titled, Skipping Stones on Ice Makes Crazy Sci-Fi Sounds, where he describes the sounds of this phenomenon perfectly “Skip a stone across a frozen lake and you might hear a high-pitched sound that’s both familiar and otherworldly. It’s like the chirp of an exotic bird or a laser blast from a galaxy far, far away.”
I also learned that the phenomenon itself is “… a classic example of acoustic dispersion. Sound waves are made up of multiple frequencies, including high ones and low ones. When a sound travels through air, its component frequencies usually travel together at the same rate, so they all reach the human ear more or less simultaneously. But sometimes, when a sound wave passes through a solid medium (like ice), those high and low frequencies get separated. Being faster, the high-frequency wavelengths zip ahead of their low-frequency counterparts. As a result, you may hear a gap between the high notes and the low notes contained within the same sound. That’s acoustic dispersion in a nutshell.” How interesting!
If you ultimately decide that you’d like to try chucking rocks yourself, I’ve read that extra-large expanses of ice lend themselves particularly well to acoustic dispersion, and that you should probably stand a good distance away from the iced-over body of water for the very best effect.
If you want to see the ultimate in stone skipping across ice, watch this video by Cory Williams as he tosses rocks onto an ice-covered lake in Alaska. He apparently struck internet gold when he posted this video in 2014. (Fast forward the video to the 3:50 mark if you want to skip the intro and just see him throwing the rocks.)
If you wander with a sense of wonder, you’ll never be disappointed!