I've spent part of the morning watching dust motes float through the sunlight that's falling beneath the dining room table. They're beautiful. They're like infinitesimal sparks or sparkles. I couldn't even see them; I could only see the reflection, the glow. And then I lost sight of them. I know they're still there, but I can't find the focus again.
That's interesting--that the motes can only be seen by their glowing; that they float so easily with the air, up, down, and around through both sun and shade; that I can lose sight of them so quickly and completely.