(above) "Double splash. The second droplet is driven by a laser detection and
timer delay from the first droplet. I use a droplet controller driven
by an audio wave to genarate a second droplet at precise timing after
the first droplet."
(below) "Soap bubble and falling marble. The soap bubble is just half burst. A
laser detection start the timing into a hardware controller to control
the camera and the flashes"
Found via Lifehacker.