ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] Direct photometry or densitometry in white light has been applied to the measurement of chromato-graphic spots of vanadium8 revealed with oxine, of phosphorus4, of cobalt and copper2. The final complex opacity includes opacity of the paper, which has to be checked millimetre by millimetre before ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/176880a0