I was doing some experiments with water drops on lampblack when I saw this.
You can see the full video here. Inside a water drop which is perfectly still from the outside, you can see some moving things, which I suppose are some lampblack flakes from the surface. I am not bothered about how those flakes got in there, but I am interested in their motion.
Why are they even moving? Is it some kind of Brownian motion?
I am amazed by the dynamicity inside such a seemingly inactive water droplet.
If I had not seen this, I would have considered the water drop as a simple sphere for the rest of my life. This observation, at least for me, raises an important question.
Is anything in the world really NOT dynamic?