Jason Slagle wrote:
> On Mon, 28 Jan 2008, Sean Bruno wrote:
>
>> I couldn't quite find the definition for "hz" in sys/ this morning.
>> What is it's value and where is it defined?
>
> From http://en.wikipedia.org/wiki/Hertz
>
> The hertz (symbol: Hz) is the International System of Units (SI) base
> unit of frequency. Its base unit is cycle/s or s^-1 (also called
> inverse seconds, reciprocal seconds). In English, hertz is used as
> both
> singular and plural. As any SI unit, Hz can be prefixed; commonly used
> multiples are kHz (kilohertz, 10^3 Hz), MHz (megahertz, 10^6 Hz), GHz
> (gigahertz, 10^9 Hz) and THz (terahertz, 10^12 Hz).
>
> One hertz simply means one cycle per second (typically that which is
> being counted is a complete cycle); 100 Hz means one hundred cycles
> per
> second, and so on. The unit may be applied to any periodic event--for
> example, a clock might be said to tick at 1 Hz, or a human heart might
> be said to beat at 1.2 Hz. The frequencies of aperiodic events,
> such as
> radioactive decay, are expressed in becquerels.
>
>
But more importantly, where is "hz" defined in the kernel tree?
Sean
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