SEARCH
0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Prev | Current Page 283 | Next

Humboldt, Alexander von, 1769-1859

"COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1"

cit., p.
673), have attempted to establish its connection with the November
phenomenon -- a connection which Olbers doubts. (Schum., 'Jahrb.', 1837, s.
281.) Regarding the question whether the place of the zodiacal light
perfectly coincides with that of the Sun's equator, see Houzeau, in Schum.,
'Astr. Nachr.', 1843, No. 492, s. 190.

As
p 142
yet we certainly know nothing definite regarding its actual material
dimensions; its augmentation* by emanations from the tails of myriads of
comets that come within the Sun's vicinity; the singular changes affecting
its expansion, since it sometimes does not apper to extend beyond our
Earth's orbit; or, lastly, regarding its conjectural intimate connection
with the more condensed cosmical vapor in the vicinity of the Sun.

[footnote] *Sir John Herschel, 'Astron.', ?ยค 487.

The nebulous particles composing this ring, and revolving round the sun in
accordance with planetary laws, may either be self-luminous or receive light
from that luminary. Even in the case of a terrestrial mist (and this fact
is very remarkable), which occurred at the time of the new moon at midnight
in 1743, the phosphorescence was so intense that objects could be distinctly
recognized at a distance of more than 600 feet.


Pages:
271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295