[ noun ] the unit of frequency; one hertz has a periodic interval of one second <noun.time>
MHI is producing the largest turbines within the group, the 701F model which can produce up to 220MW for 50 Hz markets such as Japan.
"It is now clear that 60 Hz (cycles per second) and other low frequency electromagnetic fields can interact with individual cells and organs to produce biological changes," it said. "The nature of these interactions is subtle and complex.