ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] Fig. 1.Exposure of 30 sec. at an aperture of//64 Fig. 2.Exposure of 160 sec. at an aperture of //64 Fig. 3.Black to white ratio as a function of exposure-time A series of plates was exposed at the same aperture but for different periods of time, and the plates were given identical treatment ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/1721105a0
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