Poem with an explanation: Silent rain

behind a gray piece of glass,
with drops of water falling,
 and collecting,
  and speeding up,
into trails that twine,
 and run into a small stream at the bottom.

This poem is about watching the rain from behind a piece of glass while sitting in a silent still place.  The poem is meant to emphasize the observation.  The idea is that while in a silent still place, a person may look for things to focus on, such as rain falling on glass.