 ... length to disappear altogether, or to break out anew in parts of the surface where none were before. In such cases of disappearance, the central dark spot always contracts into a point, and vanishes before the border. Occasionally they break up, or...  A Theory of the Universe - Página 881868 - 91 páginasVista completa - Acerca de este libro
 | Sir John Frederick William Herschel - 1833 - 444 páginas
...vanishes before the border. Occasionally they break up, or divide into two or more, and in those offer every evidence of that extreme mobility which belongs...scale on which their movements take place is immense. A single second of angular measure, as seen from the earth, corresponds on the sun's disc to 465 miles;... | |
 | sir John Frederick W. Herschel (1st bart.) - 1833 - 500 páginas
...vanishes before the border. Occasionally they break up, or divide into two or more, and in those offer every evidence of that extreme mobility which belongs...scale on which their movements take place is immense. A single second of angular measure, as seen from the earth, corresponds on the sun's disc to 465 miles;... | |
 | 1834 - 596 páginas
...on which their movements take place, ' offer every evidence of that extreme mo' bility which belongs to the fluid state, and of that excessively ' violent agitation which seems only compatible with the afmo' spheric or gaseous state of matter.' (P. 207.) The general appearance of the sun also confirms... | |
 | John Frederick William Herschel - 1849 - 672 páginas
...before the border. Occasionally they break up, or divide into two or more, and in those cases offer every evidence of that extreme mobility which belongs...atmospheric or gaseous state of matter. The scale on which (heir movements take place is immense. A single second of angular measure, as seen from the earth,... | |
 | 1851 - 552 páginas
...where none were before. Occasionally they break up and divide into two or more; and in those offer every evidence of that extreme mobility which belongs...movements take place is immense. Spots have been observed whose linear diameter has been upwards of 45,000 miles; and, if some records are to be trusted, of... | |
 | John Frederick William Herschel - 1851 - 706 páginas
...before the border. Occasionally they break up, or divide into two or more, and in those cases offer every evidence of that extreme mobility which belongs...scale on which their movements take place is immense. A single second of angular measure, aa seen from the earth, corresponds on the sun's disc to 461 miles... | |
 | 1854 - 466 páginas
...where none were before. Occasionally they break up and divide into two or more ; and in those offer every evidence of that extreme mobility which belongs...matter. The scale on which their movements take place is.immense. Spots have been observed whose linear diameter has been upwards of 45,000 miles; and, if... | |
 | George Duplex - 1857 - 186 páginas
...change their forms, and at length to disappear altogether. As they change aud break up, they offer every evidence of that extreme mobility which belongs only to the fluid state ; and of that violent agitation, which seems only compatible with the atmospheric, or gaseous state of matter. They... | |
 | Jacob Ennis - 1867 - 420 páginas
...agitated water. " Occasionally they break np, or divide into two or more, and in these cases offer every evidence of that extreme mobility which belongs only to the fluid state." * Dr. Long, in his " Astronomy," vol. ii., states that " while he was viewing the image of the sun... | |
 | Scientific and technical reader - 1869 - 408 páginas
...before tho border. Occasionally they break up, or divide into two or more ; and in those cases offer every evidence of that extreme mobility which belongs...scale on which their movements take place is immense. A single second of angular measure, as seen from the Earth, corresponds on the sun's disc to 461 miles... | |
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