< Page:Popular Science Monthly Volume 65.djvu
This page has been proofread, but needs to be validated.
8
POPULAR SCIENCE MONTHLY.
first slit, an image of the prominence will be recorded upon the plate. The principle of the instrument thus lies in photographing the solar
Fig. 1.—H and K Lines on the Disk, in the Chromosphere, and in a Prominence (a).
flame through a narrow slit, from which all light is excluded except that which is characteristic of the prominence itself.
This article is issued from
Wikisource.
The text is licensed under Creative
Commons - Attribution - Sharealike.
Additional terms may apply for the media files.