On Tuesday, Apr 20, 2004, at 23:01 Canada/Eastern, Snow White wrote: > [...] When you want to open a UPS pay attention to the Htz. 50-60 Htz > is the same frequency as the human heart. So, with the right > frequency you can jump-stop your heart. Maybe for the seven dwarves. The average adult human heart beat is something like 70 to 90 beats per minute. That is, roughly 1.1 to 1.5 Hertz (the abbreviation is Hz, btw). f