In addition, Newton had formulated in Propositions 43-45 of Book 1, and associated sections of Book 3, a sensitive test of the accuracy of the inverse square law, in which he showed that only where the law of force is accurately as the inverse square of the distance will the directions of orientation of the planets' orbital ellipses stay constant as they are observed to do apart from small effects attributable to inter-planetary perturbations.
Sponsored Topics. Gibson City is a city in Ford County, Illinois, United States. The population was 3,407 at the 2010 census. The site of Gibson City was purchased and platted by Jonathan B. Lott in 1869. In 1870, Lott built a home and a post office there, and several stores and an a grain elevator were constructed.
Webster City is a city in Hamilton County, Iowa, United States. The population was 8,070 at the United States 2010 Census. It is the county seat of Hamilton County. Webster City is known as 'Boone River Country' with the Boone River meandering along the east side of the city from north to south.