Cavillāre has a deep meaning

to think, to reflect, consider, meditate, to discourse, speculate, to ponder, ruminate, to become absorbed, or become lost in thought, to refocus, to be overwhelmed, are all understood from cavillāre

As follows

Within a cavitation bubble, a unique phenomenon occurs

light itself can manifest.

A bubble, a fleeting void, nothingness cradles the vacuum and space

A permissive void

Cavitāre

birth to light

the junction of cavillāre and cavitation