Electronic Resource
[s.l.]
:
Nature Publishing Group
Nature
142 (1938), S. 1163-1163
ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] THE interesting visual phenomenon described by Mr. Dartnall in NATURE recently1 was observed by Helmholtz many years ago2. The effect—the appearance of a purple after-image in a patch of light alternating at a frequency just below the critical frequency—no doubt ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/1421163b0
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