Talk:Jean Richer
Latest comment: 9 years ago by 130.233.138.45 in topic On the length of a pendulum of seconds of time
This article is rated Stub-class on Wikipedia's content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||||||||||||||||
|
> This number gives a time difference of 8.1 minutes
Actually 2.8 mm gives 2 minutes: ½*0.0028*1440, as per the pendulum equation
130.233.138.45 (talk) 10:26, 10 February 2015 (UTC)
Actually Richer's report is here: [1]
On the length of a pendulum of seconds of time edit
"One of the most considerable observations which I made was that of the length of a seconds pendulum ... compared with the one in Paris, their difference has been found to be a line and a quarter, the one in Cayenne being less than the one in Paris, which is 3 feet 8 lines and 3/5. ..."
-> Relative shortening: .002837 [a foot is 144 lines]
130.233.138.45 (talk) 11:27, 10 February 2015 (UTC)