
doi: 10.1038/121209d0
WITH reference to T. H. T.'s suggestion (NATURE, Jan. 28, p. 137) for dealing with eyeglasses while using the microscope, I find it quite sufficient to remove the cap from the eyepiece of the microscope; this allows the eye to approach to the right distance and at the same time keep the vision corrected for astigmatism. Of course with modern students' microscopes, which usually are not fitted with eye caps, this cannot be done, and astigmatism has to be put up with.
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 0 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
