ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] Figure 1 shows the number of sunspot sightings that have been recorded in each month of the year according to a catalogue of pre-telescopic sunspot sightings (139 in all)6 which is based on an independent search of official oriental dynastic histories. These sightings have been used to obtain the ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/287617a0