that's an "if" at this stage

 

 
"sonoluminescence events occur en masse at every triggered position of probability throughout the speaking length subject to specifically localised high energy noise then external power supplies may be turned off or withdrawn, the process being temporarily self-sustaining due to (predicted) chained sonoluminescence whilst reserves of water remain within the string core."

This is not a claim for "perpetual motion" or any such similarly ridiculous notion.

Please note the words "If" and "temporarily". No matter how efficient this or any other machine might eventually turn out to be, parts will wear out; in this case most notably the string. That is why the same string is used for the coils: a spare piece always to hand...

Sparkspin machine schematic you will...

Lost? Go Home!