Unformatted text preview: Alarm Clock Pendulum Clock
u Isochronous motion
u Vincenzo (1649)
u Huygens (1675) & Robert Hooke
u Galileo t Regulating hair spring Pendulum Clock Huygens (1675)
u Regulating Giovani di Dondi (1364) spiral Electronic / Atomic
u Electronic t quartz crystal produces a constant current
t compressed to produce constant frequency
u Atomic t Excitations of electrons in Caesium
molecule 1 Caesium Atomic clock 2 ...
View Full Document
This note was uploaded on 06/12/2011 for the course EGN 3000 taught by Professor Staff during the Spring '09 term at University of South Florida.
- Spring '09