History of Clock

	Revision 6 . . October 1, 2001 11:08 am by (logged).0.107.xxx
	Revision 5 . . September 21, 2001 2:58 am by Amirabelli

---

Difference (from prior major revision) (no other diffs)

Changed: 5c5

An ideal clock appropriately measures the ratio of the duration of natural processes, and thus will give the appropriate time measure for use in physical theories. Therefore, to define an ideal clock in terms of any physical theory would be circular. An ideal clock is more appropriately defined in relationship to the set of all physical processes. This leads to the following definition: An ideal clock is a recurrent process which makes the most other recurrent processes periodic.

An ideal clock appropriately measures the ratio of the duration of natural processes, and thus will give the appropriate time measure for use in physical theories. Therefore, to define an ideal clock in terms of any physical theory would be circular. An ideal clock is more appropriately defined in relationship to the set of all physical processes. This leads to the following definition: An ideal clock is a recurrent process which makes the most other recurrent processes periodic..