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- Schiehallion_experiment abstract "The Schiehallion experiment was an 18th-century experiment to determine the mean density of the Earth. Funded by a grant from the Royal Society, it was conducted in the summer of 1774 around the Scottish mountain of Schiehallion, Perthshire. The experiment involved measuring the tiny deflection of a pendulum due to the gravitational attraction of a nearby mountain. Schiehallion was considered the ideal location after a search for candidate mountains, thanks to its isolation and almost symmetrical shape. One of the triggers for the experiment were anomalies noted during the survey of the Mason–Dixon Line.The experiment had previously been considered, but rejected, by Isaac Newton as a practical demonstration of his theory of gravitation. However, a team of scientists, notably Nevil Maskelyne, the Astronomer Royal, were convinced that the effect would be detectable and undertook to conduct the experiment. The deflection angle depended on the relative densities and volumes of the Earth and the mountain: if the density and volume of Schiehallion could be ascertained, then so could the density of the Earth. Once this was known, then this would in turn yield approximate values for those of the other planets, their moons, and the Sun, previously known only in terms of their relative ratios. As an additional benefit, the concept of contour lines, devised to simplify the process of surveying the mountain, later became a standard technique in cartography.".
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- Schiehallion_experiment wikiPageWikiLink Aberration_of_light.
- Schiehallion_experiment wikiPageWikiLink Alexander_Chalmers.
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- Schiehallion_experiment wikiPageWikiLink Cartographic_relief_depiction.
- Schiehallion_experiment wikiPageWikiLink Cartography.
- Schiehallion_experiment wikiPageWikiLink Category:1774_in_Scotland.
- Schiehallion_experiment wikiPageWikiLink Category:1774_in_science.
- Schiehallion_experiment wikiPageWikiLink Category:18th_century_in_Scotland.
- Schiehallion_experiment wikiPageWikiLink Category:Density.
- Schiehallion_experiment wikiPageWikiLink Category:Geodesy.
- Schiehallion_experiment wikiPageWikiLink Category:Gravitation.
- Schiehallion_experiment wikiPageWikiLink Category:History_of_Earth_science.
- Schiehallion_experiment wikiPageWikiLink Category:History_of_Perth_and_Kinross.
- Schiehallion_experiment wikiPageWikiLink Category:Mountains_and_hills_of_Perth_and_Kinross.
- Schiehallion_experiment wikiPageWikiLink Category:Physics_experiments.
- Schiehallion_experiment wikiPageWikiLink Category:Royal_Society.
- Schiehallion_experiment wikiPageWikiLink Category:Science_and_technology_in_Scotland.
- Schiehallion_experiment wikiPageWikiLink Category:Structure_of_the_Earth.
- Schiehallion_experiment wikiPageWikiLink Center_of_mass.
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- Schiehallion_experiment wikiPageWikiLink Chimborazo.
- Schiehallion_experiment wikiPageWikiLink Chimborazo_(volcano).
- Schiehallion_experiment wikiPageWikiLink Collimated_light.
- Schiehallion_experiment wikiPageWikiLink Collimation.
- Schiehallion_experiment wikiPageWikiLink Contour_line.
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- Schiehallion_experiment wikiPageWikiLink Edmond_Halley.
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- Schiehallion_experiment wikiPageWikiLink Henry_James_(British_Army_officer).
- Schiehallion_experiment wikiPageWikiLink Henry_James_(Ordnance_Survey).
- Schiehallion_experiment wikiPageWikiLink Hollow_Earth.
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- Schiehallion_experiment wikiPageWikiLink Isaac_Newton.
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- Schiehallion_experiment wikiPageWikiLink Isogon.
- Schiehallion_experiment wikiPageWikiLink Jeremiah_Dixon.
- Schiehallion_experiment wikiPageWikiLink John_Playfair.
- Schiehallion_experiment wikiPageWikiLink Joseph_Banks.
- Schiehallion_experiment wikiPageWikiLink Jupiter.
- Schiehallion_experiment wikiPageWikiLink Jérôme_Lalande.
- Schiehallion_experiment wikiPageWikiLink Latitude.
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- Schiehallion_experiment wikiPageWikiLink Mars.
- Schiehallion_experiment wikiPageWikiLink Mason–Dixon_Line.
- Schiehallion_experiment wikiPageWikiLink Mason–Dixon_line.
- Schiehallion_experiment wikiPageWikiLink Mechanical_equilibrium.
- Schiehallion_experiment wikiPageWikiLink Mercury_(planet).
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- Schiehallion_experiment wikiPageWikiLink Nevil_Maskelyne.
- Schiehallion_experiment wikiPageWikiLink Newtons_law_of_gravitation.