 | James Samuelson, William Crookes - Science - 1865 - 874 pages
...strong'near the border, and hence when there they appear much brighter than the surface around them ; but near the centre the absorption is not great, so that...they do not gain much by escaping it. The idea that these faculae are elevations, has been confirmed by a stereoscopic impression of a sun spot and some... | |
 | Chemistry - 1865 - 332 pages
...near the border ; and hence when there they appear much brighter than the surface around them ; but near the centre the absorption is not great, so that...they do not gain much by escaping it. The idea that these faculic arc elevations has been contirmcd by a stereoscopic impression of a sun spot and some... | |
 | Chemistry - 1865 - 640 pages
...near the border ; and hence when there they appear much brighter than the surface around them ; hut near the centre the absorption is not great, so that...they do not gain much by escaping it. The idea that these faculic are elevations has been confirmed by a stereoscopic impression of a sun spot and some... | |
 | Royal Institution of Great Britain - Science - 1866 - 730 pages
...up into the higher regions of the atmosphere, by which means they are enabled to escape a great part of the absorbing effect of this atmosphere which is...the spot appears to be a hollow while the faculae appear He) elevated ridges. It should also be remarked, that faculae retain the same appearance often... | |
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... than the region around them ; but this difference in brightness is chiefly apparent near the sun's limb. The reason of this is believed to be, that they are portions of the sun's photosphere thrown up into the higher regions of the atmosphere, by... 