For example, an automotive suspension spring may be tested at several hundred compression-rebound cycles per minute.

Last year, Motorola introduced a wireless system to link computers within a building that operates at 18 billion cycles a second.

For example, when thalamic cells reverberate at two cycles per second, the brain is in a state of deep sleep.

At 10 cycles per second, the human brain is awake but not paying attention to the outside world.

And at 40 cycles per second it is either wide awake or vividly dreaming.

The pulse in his own brain was also at 57 cycles per second.

Even in its most calm state it still resonates to brain waves that vibrate at eight cycles per second.

Normally, peak contrast sensitivity is at about 4 cycles per degree of visual angle.

Above alpha are the beta waves- from concentration up to frenzy to madness at 18 or so cycles.

It is efficient in software, running at 4-5 cycles per byte on modern processors.