Editorial Type:
Article Category: Research Article
| Online Publication Date: 05 Nov 2007
Aikitu Tanakadate and the Controversy over Vertical Electrical Currents in Geomagnetic Research
Aikitu Tanakadate and the Controversy over Vertical Electrical Currents in Geomagnetic Research
Page Range: 156 – 177
Aikitu Tanakadate (1856-1952) was a pioneer in geomagnetic research in Japan. This paper focuses on Tanakadale's investigation of vertical, electrical currents between the Earth and his atmosphere and his role in a controversy over these currents. This controversy arose after Adolf Schmidt (1860-1944) hypothesized these vertical currents in 1895. Debate was aroused over this question for two reasons: firstly it might upset the premise of the Gaussian theory of geomagnetic potential; and secondly it seemed to provide a key to revealing the mechanism of geomagnetism. Tanakadale did not doubt the existence of such currents, but he was skeptical about the method with which the hypothesis was tested. After 1939 the controversy died down, but never ended. The recent solution of this problem in 1992 shows that Tanakadate was far-sighted in criticizing the validity of the method which others used to test the hypothesis.
Baker, F. W., First International Polar Year, 1882-83, Polar Record, 1982, 21(132):275-285.
Bartels, Julius, Adolf Schmidt, 1860-1944, Terrestrial Magnetism and Atmospheric Electricity, 1946, 51:439-447.
Bauer, Louis Agricola, Vertical Earth-Air Electric Currents, Terrestrial Magnetism, 1897, 2:11-22.
Bauer, Louis Agricola, Chief Results of a Preliminary Analysis of the Earth's Magnetic Field for 1922—No. 1, Terrestrial Magnetism and Atmospheric Electricity, 1923, 28:1-28.
Beattie, J. C., Report of a Magnetic Survey of South Africa (Cambridge: Royal Society, 1909), 235 p., 8 charts, and 1 map.
Buchwald, Jed Z., The Creation of Scientific Effects: Heinrich Hertz and Electric Waves (Chicago: University of Chicago Press, 1994).
Carlheim-Gyllensköld, Vilhelm, Mémoire sur le magnétism terrestre dans la Suède méridionale, Kogl. Svenska-Vetenskaps-Akademiens Handlingar, 1895, 27(7):93p., with 5 plates.
Chijiki Kansokujo [Kakioka Magnetic Observatory], Chijiki Kansoku Hyakunen Shi [One-Hundred Years of Magnetic Observations in Japan], 1983.
Chree, Charles, Atmospheric Electricity, in Encyclopaedia Britannica, 10th ed. (Edinburgh and London: Adam and Charles, 1902), 2:773-782.
Chree, Charles, Terrestrial Magnetism, Encyclopaedia Britannica, 11th ed. (Edinburgh and London: Adam and Charles, 1911), 11:353-385.
Duka, B., Comment on ‘Non-Curl-Free Geomagnetic Field’, Nuovo Cimento, Società Italiana di Fisica, 1992, 15C-2:251-252.
Dyson, F. and H. Furner, The Earth's Magnetic Potential, Monthly Notices of the Royal Astronomical Society, Geophysical Supplement, 1923, 1:76-88.
Fukushima, Naoshi, Some topics and historical episodes in geomagnetism and aeronomy, Journal of Geophysical Research, 1994, 99-A10:19, 113-141.
Good, Gregory A., Geomagneties and Scientific Institutions in Nineteenth-Century America, Eos, 1985, 66:521-528.
Good, Gregory A., The Study of Geomagnetism in the Late Nineteenth Century, Eos, 1988, 69:218-232.
Good, Gregory A., Vision of a Global Physics: The Carnegie Institution and the First World Magnetic Survey, in The Earth, the Heavens, and the Carnegie Institution of Washington, ed. Gregory A. Good (Washington, DC: American Geophysical Union, 1994), 29-36.
Good, Gregory A., Geomagnetism: Theories between 1800 and 1900, in Sciences of the Earth: An Encyclopedia of Events, People, and Phenomena (New York and London: Garland Publishing, 1998), 350-357.
Good, Gregory A., Louis A. Bauer, American National Biography (Oxford: Oxford University Press, 1999), 2:149-351.
Good, Gregory A., The Assembly of Geophysics: Scientific Disciplines as Frameworks of Consensus, Studies in the History and Philosophy of Modern Physics, 2000, 31:259-292.
Good, Gregory A., From Terrestrial Magnetism to Geomagnetism: Disciplinary Transformation in the Twentieth Century, in The Earth Inside and Out: Some Major Contributions to Geology in the Twentieth Century, ed. David R. Oldroyd, Geological Society (London) Special Publication No. 192 (London, UK: Geological Society, 2002), 229-239.
Hazard, D. L., Magnetic Survey of Japan for Epoch 1895, Terrestrial Magnetism and Atmospheric Electricity, 1905, 10:149-152.
Hertz, Heinrich, Über die Induction in rotirenden Kugeln, in Schriften Vermischten Inhalts (Leipzig, 1895), 114-115.
Kaijyo Hoancho Suirobu [Maritime Safety Agency, Hydrographic Office], Suiro Hyakunen no Ayumi [One Hundred Year of Hydrography] (Tokyo: Nippon Suiro Kyokai [Japan Hydrographic Association], 1971].
Knott, C. G., and A. Tanakadate, A Magnetic Survey of all Japan, The Journal of the College of Science, Imperial University, Japan, 1889, 2:163-362, with plates VI-XIV.
Kokudo Chiri In [Geographical Survey Institute], Sokuryo Chizu Hyakunen Shi [One Hundred Years of Land Survey and Mapping] (Tokyo: Nippon Sokuryo Kyokai [Japan Land Survey Association], 1970).
Liznar, J., Die Vertheilung der erdmagnetischen Kraft in Österreich-Ungarn zur Epoche 1890.0 nach den in den Jahren 1889 bis 1894 ausgeführten Messungen, Denkschriften der kaiserlichen Akademie der Wissenschaften, 1895, 50:137-368: 1898, 67:1-96.
Liznar, J., Die magnetische Aufnahme Österreich-Ungarns und das erdmagnetische Potential, Meteorologische Zeitschrift, Mai 1898, 175-178.
Mendenhall, T. C., Measurements of the Force of Gravity at Tokio and on the Summit of Fujiyama, Memoirs of the Science Department, Tokio Daigaku, 1881, 5.
Mendenhall, T. C., Report of the Meteorology of Tokio for the Year 2540 [1880], Memoirs of the Science Department, Tokio Daigaku, 1881, 7.
Naumann, Edmund, Über den Bau und die Entstehung der japanischen Inseln Begleitworte zu den internationalen Geologen-Congress in Berlin bearbeiteten topographischen und geologischen Karten (Berlin, 1885).
Naumann, Edmund, Die Erscheinungen des Erdmagnetiamus in ihrer Abhängigkeit vom Bau der Erdrinde (Stuttgart, 1887).
Neumayer, Georg, Atlas des Erdmagnetismus, in Physikalischer Atlas von Berghaus, Abt. IV (Gotha: Justus Perthes, 1891).
Nippoldt, Alfred, The Present Status of the Theory of the Earth's Magnetism, Terrestrial Magnetism and Atmospheric Electricity, 1900, 5:97-110.
Price, A. T., and S. Chapman, On Line-Integrals of the Diurnal Magnetic Variations, Proceedings of the Royal Society of London, 1928, London, A119:182-196.
Ricci, M. B., L. Cafarella, A. Meloni, and P. Tucci, Due Secoli di Strumenti Geomagnetici in Italia (1740-1971) (Bologna: Editorice Compositori, 1997).
Rücker, A. W., and T. E. Thorpe, The Bakerian Lecture: A Magnetic Survey of the British Isles for the Epoch January 1, 1886, Philosophical Transactions, 1891, A181:53-328.
Rücker, A. W., and T. E. Thorpe, A Magnetic Survey of the British Isles for the Epoch January 1, 1891, Philosophical Transaction, 1896, A188:4-653.
Rücker, A. W., On the Existence of Vertical Earth-Air Electric Currents in the United Kingdom, Terrestrial Magnetism, 1896, 1(2):77-84. (From the Philosophical Magazine, February 1896, Read before the Physical Society, December 13, 1895).
Rücker, A. W., Recent Research on Terrestrial Magnetism. Nature, December 16, 1897, 57(1468): 160-163.
Sakai, S., and E. Yamaguchi, Measurement of the Force of Gravity at Naha and Kagoshima, Appendix to Memoir No. 5 of Tokio Daigaku, 1884.
Satoh, Hiroyuki, Early Geomagnetic Observations by Geological Survey of Japan, Chishitu News, 1985, 371:6-15(in Japanese).
Schmidt, Adolf, Mitteilungen über eine neue Berechnung des erdmagnetischen Potentials, Abhandlungen der Hen Class der könig bayerischen Akademie der Wissenschaften, 1895, 19(1):1-66.
Schmidt, Adolf, Der magnetische Zustand der Erde zur Epoche 1885.0, Archiv der deutschen Seewarte, 1898, 21(2):1-75.
Schmidt, Adolf, Zur Frage der hypothetischen die Erdoberfläche durhdringenden elektrischen Ströme (mit einem Zusatz von J. Bartels), Gerlands Beiträge zur Geophysik, 1939, 55:292-302.
Schröder, Wilfired, and K. H. Wiederkehr, Georg von Neumayer (1826-1909) und die internationale Entwicklung der Geophysik, Gesnerus, 1992, 49:45-62.
Schütt, O., Ein Beitrag zur Kenntnisse der magnetischen Erdkraft, Mittheilungen der Deutschen Gesellschaft für Natur- and Völkerkunde Ostasiens, 1880-1884, 3:71-87.
Schuster, Arthur, On Electric Currents Induced by Rotating Magnets, and Their Application to Some Phenomena of Terrestrial Magnetism. Terrestrial Magnetism, 1896, 1:1-17.
Schuster, Arthur, A Magnetic Survey of Japan, Nature, April 20, 1905, 71(1851):578-579.
Sekino, Shuuzo, Jiryoku Kansoku Kiji [Report of Geomagnetic Observation], Chishitu Yoho [Summary Report of Geology], 1886, 1:75-104.
Shinsai Yobo Chosakai, Chosakai Jigyo Gairyaku Isuminary of the enterprise by the Committee], Shinsai Yobo Chosakai Houkoku [Report of the Earthquake Investigation Commiitee], November 1893, 1:5-16.
Tanakadale, A., Measurement of the Force of Gravity and Magnetic Constants at Ogawiwarajima, Appendix to the Memoir No. 5 of Tokio Daigaku, 1885.
Tanakadate, A., A Magnetic Survey of Japan reduced to the Epoch 1895.0 and the Sea Level, carried out by order of the Earthquake Investigation Committee, Journal of the College of Science, Imperial University of Tokyo, Japan, 1904, 14:543 p., with 98 plates, including 11 maps.
Tanakadate, A., and H. Nagaoka, The Disturbance of Isomagnetics attending the Mino-Owari Earthquake of 1891, Journal of the College of Science, Imperial University, Japan, 1893, 5.
Tanakadate, A., R. Fujisawa, and S. Tanaka, Measurement of the Force of Gravity at Sapporo, Appendix to the Memoir No.5 of the Science Department, Tokio Daigaku, 1882.
Trabert, H., Der Zusammenhang zwischen den Erscheinungen des Erdmagnetismus und den elektrischen Vorgängen in der Atmosphäre, Meteorologische Zeitschrift, November, 1898, 401-412.
Van Vleutens, A., Over de dagelijksche variatie van het Aardmagnetisme, K. Ned. Meteorol. Inst., 1917, 102.
Von Bezold, W., and A. Schmidt, Vorschlag zu einer magnetischen Vermessung eines ganzen Parallelkreises zur Prüfung der Grundlagen der Gauss'schen Theorie des Erdmagnetismus, Sitzungsberichte der königlich preussischen Akademie der Wissenschaften, 1903, 32:669-677.
Yoshida, H., and S. Sugiyama, Aikitu Tanakadate and the Beginning of the Physical Researches in Japan, Historia Scientiarum, 1997, 7(2):93-105.