Newton's constant, G, which governs the strength of the gravitational attraction between two masses, is difficult to measure accurately. A new set of experiments aims to end 200 years of uncertainty.
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Quinn, T. Measuring big G. Nature 408, 919–920 (2000). https://doi.org/10.1038/35050187
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DOI: https://doi.org/10.1038/35050187
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