파일:Pierre and Marie Curie.jpg

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Pierre and Maria Skłodowska-Curie in the laboratory, demonstrating the experimental apparatus used to detect the ionsation of air, and hence the radioactivity, of samples of purified ore which enabled their discovery of radium.

Maria is operating the apparatus. With her right hand she is adding/subtracting known weights from a pan hanging from a strip of piezo-electric material which generates a very small elecrical charge (of the order of picoamperes) according to the weight hung on it. This is nulled against the charge accumulated on an ion chamber due to radioactivity. In her left hand she has a stopwatch to measure the rate of change of charge using a quadrant electrometer. When the weight is changed, the time elapsed for the charge to be nulled is measured by the stopwatch. The charge is indicated by a light spot on the scale in front of her projected by the quadrant electrometer, which is off the left of the picture.
날짜 1904년경
date QS:P,+1904-00-00T00:00:00Z/9,P1480,Q5727902
출처 hp.ujf.cas.cz (uploader=--Kuebi 18:28, 10 April 2007 (UTC))
저자 미상Unknown author

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Public domain
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The copyright of this image has expired in the European Union because it was published more than 70 years ago without a public claim of authorship (anonymous or pseudonymous), and no subsequent claim of authorship was made in the 70 years following its first publication.
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날짜/시간섬네일크기사용자설명
현재2014년 5월 14일 (수) 17:012014년 5월 14일 (수) 17:01 판의 섬네일2,163 × 1,740 (1.07 MB)Materialscientistcrop
2014년 5월 14일 (수) 16:572014년 5월 14일 (수) 16:57 판의 섬네일3,210 × 2,196 (1.9 MB)MaterialscientistOriginal
2012년 7월 27일 (금) 14:172012년 7월 27일 (금) 14:17 판의 섬네일2,982 × 2,186 (1,020 KB)Materialscientistbetter version
2008년 6월 2일 (월) 23:292008년 6월 2일 (월) 23:29 판의 섬네일2,624 × 1,640 (2.98 MB)CarlFromViennaEine manuell überarbeitete Version des bekannten Fotos. Details wurden nachgezeichnet zum Abdruck im Reclam-Heftchen nachbearbeitet (also nicht von mir).
2007년 4월 11일 (수) 03:282007년 4월 11일 (수) 03:28 판의 섬네일1,600 × 1,091 (161 KB)Kuebi{{Information |Description=Pierre and Marie Curie in the laboratory. Prior 1907. |Source= hp.ujf.cas.cz (uploader=--~~~~) |Date=prior 1907, because Pierre Curie died in 1906 |Author=unknown }}

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