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from it. The reason why there is a noise and no earthquake is that the
underground spaces are so extensive in proportion to the quantity of the air
that is being driven on that the wind slips away into the void beyond.
Again, our theory is supported by the facts that the sun appears hazy and is
darkened in the absence of clouds, and that there is sometimes calm and sharp
frost before earthquakes at sunrise. The sun is necessarily obscured and
darkened when the evaporation which dissolves and rarefies the air begins to
withdraw into the earth. The calm, too, and the cold towards sunrise and dawn
follow from the theory. The calm we have already explained. There must as a
rule be calm because the wind flows back into the earth: again, it must be
most marked before the more violent earthquakes, for when the wind is not
part outside earth, part inside, but moves in a single body, its strength must be
greater. The cold comes because the evaporation which is naturally and
essentially hot enters the earth. (Wind is not recognized to be hot, because it
sets the air in motion, and that is full of a quantity of cold vapour. It is the
same with the breath we blow from our mouth: close by it is warm, as it is
when we breathe out through the mouth, but there is so little of it that it is
scarcely noticed, whereas at a distance it is cold for the same reason as wind.)
Well, when this evaporation disappears into the earth the vaporous exhalation
concentrates and causes cold in any place in which this disappearance occurs.
A sign which sometimes precedes earthquakes can be explained in the same
way. Either by day or a little after sunset, in fine weather, a little, light, long-
drawn cloud is seen, like a long very straight line. This is because the wind is
leaving the air and dying down. Something analogous to this happens on the
sea-shore. When the sea breaks in great waves the marks left on the sand are
very thick and crooked, but when the sea is calm they are slight and straight
(because the secretion is small). As the sea is to the shore so the wind is to the
cloudy air; so, when the wind drops, this very straight and thin cloud is left, a
sort of wave-mark in the air.
An earthquake sometimes coincides with an eclipse of the moon for the
same reason. When the earth is on the point of being interposed, but the light
and heat of the sun has not quite vanished from the air but is dying away, the
wind which causes the earthquake before the eclipse, turns off into the earth,
and calm ensues. For there often are winds before eclipses: at nightfall if the
eclipse is at midnight, and at midnight if the eclipse is at dawn. They are
caused by the lessening of the warmth from the moon when its sphere
approaches the point at which the eclipse is going to take place. So the
influence which restrained and quieted the air weakens and the air moves
again and a wind rises, and does so later, the later the eclipse.
A severe earthquake does not stop at once or after a single shock, but first
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Buch The Complete Aristotle"
The Complete Aristotle
- Titel
- The Complete Aristotle
- Autor
- Aristotle
- Datum
- ~322 B.C.
- Sprache
- englisch
- Lizenz
- PD
- Abmessungen
- 21.0 x 29.7 cm
- Seiten
- 2328
- Schlagwörter
- Philosophy, Antique, Philosophie, Antike, Dialogues, Metaphysik, Metaphysics, Ideologie, Ideology, Englisch
- Kategorien
- Geisteswissenschaften
- International
Inhaltsverzeichnis
- Part 1; Logic (Organon) 3
- Categories 4
- On Interpretation 34
- Prior Analytics, Book I 56
- Prior Analytics, Book II 113
- Posterior Analytics, Book I 149
- Posterior Analytics, Book II 193
- Topics, Book I 218
- Topics, Book II 221
- Topics, Book III 237
- Topics, Book IV 248
- Topics, Book V 266
- Topics, Book VI 291
- Topics, Book VII 317
- Topics, Book VIII 326
- On Sophistical Refutations 348
- Part 2; Universal Physics 396
- Physics, Book I 397
- Physics, Book II 415
- Physics, Book III 432
- Physics, Book IV 449
- Physics, Book V 481
- Physics, Book VI 496
- Physics, Book VII 519
- Physics, Book VIII 533
- On the Heavens, Book I 570
- On the Heavens, Book II 599
- On the Heavens, Book III 624
- On the Heavens, Book IV 640
- On Generation and Corruption, Book I 651
- On Generation and Corruption, Book II 685
- Meteorology, Book I 707
- Meteorology, Book II 733
- Meteorology, Book III 760
- Meteorology, Book IV 773
- Part 3; Human Physics 795
- On the Soul, Book I 796
- On the Soul, Book II 815
- On the Soul, Book III 840
- On Sense and the Sensible 861
- On Memory and Reminiscence 889
- On Sleep and Sleeplessness 899
- On Dreams 909
- On Prophesying by Dreams 918
- On Longevity and the Shortness of Life 923
- On Youth, Old Age, Life and Death, and Respiration 929
- Part 4; Animal Physics 952
- The History of Animals, Book I 953
- The History of Animals, Book II translated 977
- The History of Animals, Book III 1000
- The History of Animals, Book IV 1029
- The History of Animals, Book V 1056
- The History of Animals, Book VI 1094
- The History of Animals, Book VII 1135
- The History of Animals, Book VIII 1150
- The History of Animals, Book IX 1186
- On the Parts of Animals, Book I 1234
- On the Parts of Animals, Book II 1249
- On the Parts of Animals, Book III 1281
- On the Parts of Animals, Book IV 1311
- On the Motion of Animals 1351
- On the Gait of Animals 1363
- On the Generation of Animals, Book I 1381
- On the Generation of Animals, Book II 1412
- On the Generation of Animals, Book III 1444
- On the Generation of Animals, Book IV 1469
- On the Generation of Animals, Book V 1496
- Part 5; Metaphysics 1516
- Part 6; Ethics and Politics 1748
- Nicomachean Ethics, Book I 1749
- Nicomachean Ethics, Book II 1766
- Nicomachean Ethics, Book III 1779
- Nicomachean Ethics, Book IV 1799
- Nicomachean Ethics, Book V 1817
- Nicomachean Ethics, Book VI 1836
- Nicomachean Ethics, Book VII 1851
- Nicomachean Ethics, Book VIII 1872
- Nicomachean Ethics, Book IX 1890
- Nicomachean Ethics, Book X 1907
- Politics, Book I 1925
- Politics, Book II 1943
- Politics, Book III 1970
- Politics, Book IV 1997
- Politics, Book V 2023
- Politics, Book VI 2053
- Politics, Book VII 2065
- Politics, Book VIII 2091
- The Athenian Constitution 2102
- Part 7; Aesthetic Writings 2156