Reflections on Error Bars and New Data for IDV13
نویسنده
چکیده
1) The intrinsic error in the variation of H has varied with time. From about the Second International Polar Year in the 1930s on, the error has generally been less that 1 nT because of the introduction of unifilar magnetometers to replace the old bifilar instruments. This paper by Eschenhagen [Terrestrial Magnetism and Atmospheric Electricity. Volume 5, Issue 2, pages 59–62, June 1900] describes the progress making this possible:
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تاریخ انتشار 2013