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Title: Photograph of Oertling balance used by Prof [Go to resource]
Description: Photograph of Oertling balance used by Prof. Poynting, in 1878, for his "Determination of the Mean Density of the Earth and the Gravitation Constant". License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Creator: Oertling (maker) Identifier: 1921-31 Go to resource More Like this...
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