Okay, first a disclaimer: this blog has little to do with the farm or the animals. Those of you who read this blog regularly know that I like to understand how and why things work. I spend much of my time with the flock looking at details and thinking about what I see. Right now a mystery is bugging me — so much that it’s distracting me from all I need to do. As a result, I’m posting it here in hope that someone will have a good explanation. The puzzle is starting to make me a bit crazy. Please help!
On the day before my birthday in early June, I poured my morning iced coffee (my typical summer routine) and then noticed that after I filled my glass, there was just enough left in the jug for one more morning. I poured it into a glass, topped it with a screw lid, and put it into the refrigerator to be enjoyed the next day.
When I pulled the glass out of the fridge the next morning and took off the lid, I was surprised to see a lovely pattern in the creamy foam on the top of the coffee (left). The cream had been added when I originally made the jug of coffee, but I had never seen this type of pattern in the jug or glass. It was beautiful! Like most such surprises in my life, I photographed it for future study. I told myself that life had given me this lovely creation because it was my birthday, and with Rick out of town on business, it made the day special. I sent the photo to several people, asking how on earth this had come to be, and I eagerly awaited the replies as I continued to puzzle it out myself.
The consensus of my email friends was that the rings were caused by vibrations that created standing waves in the coffee. Overnight, the refrigerator had run, causing small vibrations that had set up the rings in the foam. It made sense to me, and I was happy to have an explanation. My curious mind was calmed and settled, and I moved on to other activities and thoughts — until today!
Yesterday, I once again poured out my morning iced coffee and noticed that there was enough remaining in the jug for the next morning. I again filled the same glass with the remaining coffee to the same level and slipped the same lid over the top, putting the lidded glass into the refrigerator. Overnight, I eagerly awaited the concentric rings of cream in my coffee. This morning, I carefully took the glass from the shelf of the fridge and placed it on the counter. I slipped the lid from the glass, trying not to cause any movement that might disturb the pattern I expected to see. Yet, when I removed the lid, all I found was the coffee you can see in the photo on the right below. No rings!
So now my mind is once again abuzz: why were there no rings in my coffee this morning? The obvious answer is that it wasn’t my birthday! But seriously, now I really want to know. If it was originally a case of standing waves from the vibrations of the fridge, then I should have seen those same circles from the same vibrations of the same refrigerator. It was the same glass, the same lid, and the same shelf. The fridge is loaded with about the same amount of stuff, so what happened? Where, oh where, are my rings?
My mind is churning through possibilities, but I’m not coming up with anything that really makes sense — nothing that leaves my mind satisfied enough to move on. I need to figure this out! I have a lot to do, including figuring out this fall’s breeding groups, and here I am puzzling over a glass of iced coffee and absent concentric foam rings!
So I ask: do you have any idea why my coffee had no rings this morning? I would love to know, and I look forward to reading your thoughts. Thanks in advance!