There’s something very pleasing, and even magical, about ripples and waves. I find them mesmerising, and I suspect you may do too.
I remember when we learned about “interference patterns” at school and being amazed at how the interacting waves created quite beautiful displays.
The thing is there are these waves and ripples everywhere. Most of them are invisible, but they are around us, and flowing through, interacting within us.
Isn’t it amazing that our heart beats out a rhythm which sends waves like this out beyond our body to resonate with the hearts of others?
Heroes Not Zombies 
I can identify with this, Bob, ripples and waves can be beautiful. And they have an extra resonance here in Argyll – waves like that can be an indication of something interesting and beautiful in the water, like a seal or an otter, requiring a quick dash for the binoculars.
But who in Stirling High taught about interference patterns? I must have been attending the wrong classes!
Physics class, Martin