Fayl:Pierre_and_Marie_Curie.jpg
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Kerçek fayl (2.163 × 1.740 piksel, fayl büyükligi: 1,07 MB, MIME çeşiti: image/jpeg)
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Faylğa ait qısqa tarif
TasvirPierre and Marie Curie.jpg |
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. |
Tarih |
circa 1904 date QS:P,+1904-00-00T00:00:00Z/9,P1480,Q5727902 |
Menba | hp.ujf.cas.cz (uploader=--Kuebi 18:28, 10 April 2007 (UTC)) |
Yaratıcı | Unknown authorUnknown author |
Litsenziyalama
Public domainPublic domainfalsefalse |
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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Faylnıñ keçmişi
Faylnıñ kerekli anki alını körmek içün tarihqa/saatqa basıñız.
Tarih ve saat | Kiçik resim | En × boy | Qullanıcı | İzaat | |
---|---|---|---|---|---|
şimdiki | 08:01, 2014 s. mayısnıñ 14 | 2.163 × 1.740 (1,07 MB) | Materialscientist | crop | |
07:57, 2014 s. mayısnıñ 14 | 3.210 × 2.196 (1,9 MB) | Materialscientist | Original | ||
05:17, 2012 s. iyülniñ 27 | 2.982 × 2.186 (1.020 KB) | Materialscientist | better version | ||
14:29, 2008 s. iyünniñ 2 | 2.624 × 1.640 (2,98 MB) | CarlFromVienna | Eine manuell überarbeitete Version des bekannten Fotos. Details wurden nachgezeichnet zum Abdruck im Reclam-Heftchen nachbearbeitet (also nicht von mir). | ||
18:28, 2007 s. aprelniñ 10 | 1.600 × 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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