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1by V. Nikulin, A. A. Nikonov, T. R. M. Kebeasy, E. S. Husebye, P. Mäntyniemi, A. Pacesa“... in 1904-1905, but these mechanical pendulum instruments were broad band and amplification factors were...”
Published 2004-06-01
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2by B. R. Pettersen“...The first gravity determinations in Norway were made by Edward Sabine in 1823 with a pendulum...”
Published 2016-10-01
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