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Ofbyld:Pierre and Marie Curie.jpg

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Beskriuwing

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.
Datum circa 1904
date QS:P,+1904-00-00T00:00:00Z/9,P1480,Q5727902
Boarne hp.ujf.cas.cz (uploader=--Kuebi 18:28, 10 April 2007 (UTC))
Auteur ÛnbekendUnknown author

Lisinsje

Public domain
Public domain
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.
EU
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  1. published over 70 years ago, and
  2. the original author's actual identity was not publicly disclosed in connection with this image within 70 years following its publication.

Images that lack either of these two conditions should not use this template.

Reasonable evidence must be presented that the author's name (e.g., the original photographer, portrait painter) was not published with a claim of copyright in conjunction with the image within 70 years of its original publication. Works which had not entered Public Domain in their country in 1996 that were uploaded before 1 March 2012 should be marked additionally with {{Not-PD-US-URAA}}.

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Klik op in datum/tiid om it bestân te besjen sa't it op dat stuit wie.

Datum/TiidMiniatuerôfmjittingsMeidoggerOpmerking
lêste14 mai 2014, 10.01Miniatuer foar de ferzje fan 14 mai 2014 om 10.012.163 × 1.740 (1,07 MB)Materialscientistcrop
14 mai 2014, 09.57Miniatuer foar de ferzje fan 14 mai 2014 om 09.573.210 × 2.196 (1,9 MB)MaterialscientistOriginal
27 jul 2012, 07.17Miniatuer foar de ferzje fan 27 jul 2012 om 07.172.982 × 2.186 (1.020 KB)Materialscientistbetter version
2 jun 2008, 16.29Miniatuer foar de ferzje fan 2 jun 2008 om 16.292.624 × 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).
10 apr 2007, 20.28Miniatuer foar de ferzje fan 10 apr 2007 om 20.281.600 × 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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