Computer Science – Sound
Scientific paper
Jul 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992metic..27..255m&link_type=abstract
Meteoritics, vol. 27, no. 3, volume 27, page 255
Computer Science
Sound
Scientific paper
This year marks the 500th anniversary of the fall of a meteorite at Ensisheim in Alsace. In at least two respects this event is unique in the history of meteoritics. First, this was the earliest witnessed meteorite fall in the West from which pieces are preserved. Second, it is the only meteorite of which a continuous five-century public record exists in manuscripts and books. Beginning with newsheets printed in 1492, writings about this event illuminate the evolution of ideas from a 15th century belief that stones from the sky were of miraculous origin, to an 18th century conviction that stones do not fall from the sky, to our present view that they fall in abundance, originating in interplanetary space (Marvin, 1992). This paper will highlight certain previously unexamined aspects of the story and address problems inherent in historical analysis. Unusable Maps. The fall of the stone was heralded by an explosion which, according to Sebastian Brant (1492), was heard along the valleys of the Danube, Neckar, Aare, Ill, and Rhine and in the alpine cantons of Schwyz and Uri. Contemporary maps, such as that published in The Nuremberg Chronicle of 1493, so distorted the regional geography that a fireball trajectory cannot be reconstructed on them. On modern maps, however, the areas Brant listed stretch about 150 km to the southeast of Ensisheim, a distance well within the range of sounds reported from other exploding fireballs. Newton (1891) and Marvin (1992) worked out possible trajectories that could account for the sound being heard in all named localities. This suggests that, far from exaggerating distances for dramatic effect, Brant's description may well have been accurate. If so, he compiled his information from word-of-mouth reports without reference to the rudimentary maps available in his time. The Language of Wonder. A document mounted beside the stone in the Ensisheim church stated that learned men did not know what it was: it must be supernatural, a wonder of God, because never before had such a thing been heard, or seen, or written about. Von der Muhll (1961) and others have asked how such statements could be made when Pliny the Elder wrote of fallen stones as early as the 1st century A.D., and Heynlin de Lapide, at nearby Basel, was translating Pliny's works at the time of the fall. However, expressions such as "never before heard, seen, or written about," spiced the reports of Medieval travelers struggling to describe the marvels of far-off lands. In this instance, the phrases described a marvel that burst upon the people of the upper Rhineland in the course of their daily routines. In truth, nothing ever written could have prepared them for the incandescent fireball, resounding explosion, and the black stone that plunged to Earth at Ensisheim. Unimaginative Eyewitnesses. A boy saw the stone fall and a crowd dug it out of a wheat field. In 1800, the chemist, Charles Barthold, rejected the eyewitness story and concluded that the stone was a common type of rock that could have washed down from a mountainside. In 1803, after meteorites, including the Ensisheim stone, had become accepted as authentic natural phenomena, Joseph Izarn wrote that the boy's testimony should be believed because ignorant persons like him have no imagination and could not possible invent tales about stones from the sky. Izarn's opinion was not eccentric; numerous writings show that it reflected a centuries-old tradition of placing special value on observations by unschooled witnesses. References: Brant S. (1492) Flugblatt, J. von Ople, Basel, 1 p. Izarn J. (1803) Lithologie Atmospherique, Delalain Fils, Paris, 422 pp. Marvin U. B. (1992) Meteoritics 27, 28-72. Newton H. A. (1891) Comptes Rendus Acad. Sci. 113, 234. Muhll Th. von der (1975) Donnerstein von Ensisheim, Birkhauser Verlag, Basel, 42 pp. Schedel H. (1493) Nuremberg Chronicle, A. Korberger, Nuremberg, 299 pp.
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