Newton: pendulum tests (@ 1 part in 103 )
But this was about 80 years
after Galileo’s first experiments…
•Newton major contribution
(beyond UFF ® equivalence)
Principia, (Definition I) : “this quantity that I mean hereafter under the name of ...mass ...is known by the weight ...for it is proportional to the
weight as I have found by experiments
on pendulums, very accurately made...”