Influence of Partial Solar Eclipse 2016 on the surface gravity acceleration using photogate sensor on Kater's reversible pendulum

[摘要] This study was conducted to determine the Earth's surface gravitational acceleration (g) prior to, during, and after a partial solar eclipse. Data was collected in Basic Physics Laboratory Universitas Pendidikan Indonesia, Bandung with coordinates S 6°51′48″, E 107°35′40″ for three days on March 8 - 10, 2016, in time interval measurement from 6 a.m. to 9 a.m. This research used a standard pendulum, Kater's reversible pendulum, which deviated less than 3° so that the motion can be regarded harmonics oscillation. The period of pendulum oscillation motion is measured by a light sensor (photogate sensor) with accuracy until 10-13seconds. The data analysis shows that there is small difference value of gravity acceleration at the Earth's surface from three days of observation, i.e. in the order of 10-3ms-2. It means, there is a changes in the Earth's surface gravitational acceleration (g) due to the partial solar eclipse but not significant.

[发布机构] Departemen Pendidikan Fisika, FPMIPA, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung; 40154, Indonesia^1;Departemen Geofisika, FMIPA, Universitas Padjadjaran, Jl. Raya Bandung-Sumedang Km. 21, Jatinangor; 45363, Indonesia^2

[效力级别] 天文学

[关键词] Difference values;Earth's surface;Gravitational accelerations;Gravity acceleration;Oscillation motion;Physics laboratories;Surface gravity;Time interval measurements