While looking for a solution to a LaTeX path search problem i ran into this:
From: Microwave Duty Cycle | The Fugue
As you may know, when you change the power setting on most microwaves, it doesn’t change the power output of the magnetron. It changes the duty cycle, i.e. when the magnetron is on and when it is off.
He’s a brave soul, I did this years ago too, but was afraid to admit (let alone publish it). (Oh and I also found the solution to my LaTeX search problem there)