ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] Published absorption spectra for bituminous coals4'5'12'18 -usually as thin vitrain sections, Fig. la (ref. 12)-show that there are no absorption bands, but only general absorption throughout the visible region of the spectrum. This absorption, which is greatest at the short-wavelength limit of the ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/210939a0
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