Digitale Medien
[s.l.]
:
Nature Publishing Group
Nature
69 (1904), S. 489-489
ISSN:
1476-4687
Quelle:
Nature Archives 1869 - 2009
Thema:
Biologie
,
Chemie und Pharmazie
,
Medizin
,
Allgemeine Naturwissenschaft
,
Physik
Notizen:
[Auszug] I ENCLOSE two prints I have taken with a radium screen. No. 1 shows the impression of a steel pen-nib, a steel screw, and an ordinary paper fastener. These articles were laid on a photographic plate and exposed for 6 days. No. 2 shows the impression of two bronze coins (halfpennies) similarly ...
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1038/069489f0
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