Lêer:Pierre and Marie Curie.jpg

Page contents not supported in other languages.
in Wikipedia, die vrye ensiklopedie

Oorspronklike lêer ‎(2 163 × 1 740 piksels, lêergrootte: 1,07 MG, MIME-tipe: image/jpeg)

Hierdie lêer kom vanaf Wikimedia Commons en kan ook in ander projekte gebruik word. Die beskrywing op die lêer se inligtingsblad word hieronder weergegee.

Opsomming

Beskrywing

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
Bron hp.ujf.cas.cz (uploader=--Kuebi 18:28, 10 April 2007 (UTC))
Outeur OnbekendUnknown author

Lisensiëring

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
EU
To use this template, the image must meet both of the following two conditions:
  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}}.

Note: In some countries anonymous works are copyrighted until 70 years after the death of the author if the author's identity became public in any way during the original term. In Germany this applies to certain works published before July 1, 1995; see Übergangsrecht.

English | español | français | italiano | македонски | മലയാളം | sicilianu | slovenščina | 中文 | +/−

Lêergeskiedenis

Klik op die datum/tyd om te sien hoe die lêer destyds gelyk het.

Datum/TydDuimnaelDimensiesGebruikerOpmerking
huidig08:01, 14 Mei 2014Duimnaelskets vir weergawe vanaf 08:01, 14 Mei 20142 163 × 1 740 (1,07 MG)Materialscientistcrop
07:57, 14 Mei 2014Duimnaelskets vir weergawe vanaf 07:57, 14 Mei 20143 210 × 2 196 (1,9 MG)MaterialscientistOriginal
05:17, 27 Julie 2012Duimnaelskets vir weergawe vanaf 05:17, 27 Julie 20122 982 × 2 186 (1 020 KG)Materialscientistbetter version
14:29, 2 Junie 2008Duimnaelskets vir weergawe vanaf 14:29, 2 Junie 20082 624 × 1 640 (2,98 MG)CarlFromViennaEine manuell überarbeitete Version des bekannten Fotos. Details wurden nachgezeichnet zum Abdruck im Reclam-Heftchen nachbearbeitet (also nicht von mir).
18:28, 10 April 2007Duimnaelskets vir weergawe vanaf 18:28, 10 April 20071 600 × 1 091 (161 KG)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 }}

Die volgende bladsy gebruik dié lêer:

Globale lêergebruik

Die volgende ander wiki's gebruik hierdie lêer:

Wys meer globale gebruik van die lêer.

Ontsluit van "https://af.wikipedia.org/wiki/Lêer:Pierre_and_Marie_Curie.jpg"