Sense Sonnet - Steamer

Kept Awake

The drip, drip, drip kept him awake,
A scientist decided to
Find why a water drop does make
The "plink" sound that it seems to do.
The water droplet needs to land
In water for  the "plink" to sound.
An air bubble does result, and
In its oscillating, there's bound
To be a water vibration,
That does make the iconic tone -
A "plinking" sound generation,
The annoying sound so well known.

Why does a water drop sound "plink?"
A kept awake mind starts to think.