The Astrophysical journal . There are somevery distinct differences of line intensity to be noticed in this region,but such effects become far more marked in the blue and violet, andvery conspicuous in the ultra-violet. In the region X3815-X3840the appearance of the spectrum is greatly changed, through the almostcomplete disappearance of the wings which characterize the strongerlines corresponding to the center of the disk. So far as we have yetobserved, in our preliminary examination of the plates,-this practicalelimination of the wings applies to all lines of this character. It istherefore t
The Astrophysical journal . There are somevery distinct differences of line intensity to be noticed in this region,but such effects become far more marked in the blue and violet, andvery conspicuous in the ultra-violet. In the region X3815-X3840the appearance of the spectrum is greatly changed, through the almostcomplete disappearance of the wings which characterize the strongerlines corresponding to the center of the disk. So far as we have yetobserved, in our preliminary examination of the plates,-this practicalelimination of the wings applies to all lines of this character. It istherefore to be regarded as the most striking feaiure of the spectrumof the suns disk near the limb. In spots, on the other hand, a markedstrengthening of the wings is a well-known characteristic in theless refrangible region of the spectrum. If this applies in the samedegree to the much more closely crowded lines of the ultra-violet,it may be one of the causes contributing to the extreme weaknessof the spot spectrum in this
Size: 1487px × 1679px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectspectru, bookyear1895
