Shigarwa: Gwajin Schiehallion wani gwaji ne na karni na 18 don ƙayyade matsakaicin matsakaicin Duniya. An ba da kuɗin ta hanyar tallafi daga Royal Society, an gudanar da shi a lokacin rani na 1774 a kusa da dutsen Scottish na Schiehallion, Perthshire. Gwajin ya haɗa da auna ƙarancin karkatarwar pendulum saboda jan hankalin mai jan hankali na dutsen da ke kusa. An dauki Schiehallion a matsayin wuri mafi kyau bayan neman 'yan takarar dutse, godiya ga keɓewa da kusan siffar symmetrical. Daya daga cikin abubuwan da suka haifar da gwajin sune abubuwan da aka lura yayin binciken layin Mason-Dixon. Tambaya: Me ya sa Schiehallion ya zama wuri mafi kyau?
keɓewa da kusan siffar symmetrical