PPRuNe Forums - View Single Post - Galileo's pendulum
View Single Post
Old 21st Feb 2015, 22:05
  #2 (permalink)  
G-CPTN
Resident insomniac
 
Join Date: Aug 2005
Location: N54 58 34 W02 01 21
Age: 75
Posts: 1,859
As the swinging lamp was, in fact, a chandelier (in Pisa Cathedral), he might have just 'counted' - and noticed that, regardless of amplitude, the time taken was constant.

Galileo discovered the crucial property that makes pendulums useful as timekeepers, called isochronism; the period of the pendulum is approximately independent of the amplitude or width of the swing.
From:- http://en.wikipedia.org/wiki/Pendulu...o.27s_research
G-CPTN is offline