Auroræ: Their Characters and Spectra
Unlocking the Enigmatic Beauty of Celestial Light ShowsBy J. Rand Capron
Length8h 40m
About this audiobook
In "Auror√¶: Their Characters and Spectra," J. Rand Capron embarks on a meticulous exploration of the natural phenomenon of auroras, synthesizing astronomical observations with an in-depth analysis of their spectral characteristics. Capron employs a scientific yet accessible literary style, weaving together empirical data, theoretical frameworks, and vivid descriptions to illuminate the complexities of auroral phenomena. This work is situated within the broader context of late 19th-century scientific inquiry, aligning with contemporaneous advances in atmospheric physics and spectroscopy, making it a pioneering contribution to the field of atmospheric optics. J. Rand Capron was a noted figure in the study of atmospheric science during a era marked by a burgeoning interest in the interplay between celestial events and terrestrial phenomena. His background in both observational astronomy and the burgeoning field of spectrometry provided him with a unique vantage point to address the intricacies of auroras. Driven by a passion for natural history and a commitment to scientific clarity, Capron's scholarly pursuits reflect his dedication to enhancing public understanding of atmospheric phenomena. This book is highly recommended for scholars, students, and enthusiasts of atmospheric sciences and physics alike. Capron'Äôs rigorous analysis, paired with his eloquent prose, makes "Auror√¶: Their Characters and Spectra" an essential reading that not only enriches one'Äôs understanding of auroras but also invites readers to appreciate the marvelous intricacies of our natural world.
Audiobook details
GenreScience and Nature
Length8 hrs 40 mins
Narrated byListen with 1,000+ voices
FormateBook with Audio
Publish dateDec 23, 2019
LanguageEnglish
Table of contents
1PREFACE.
64CHAPTER XI. THE COMPARISON OF SOME TUBE AND OTHER SPECTRA WITH THE SPECTRUM OF THE AURORA.
2LIST OF PLATES.
65Hydrogen-tube.
3PART I. THE AURORA AND ITS CHARACTERS.
66Carbon- and Oxygen-tubes.
4CHAPTER I. THE AURORA AS KNOWN TO THE ANCIENTS.
67Geissler Mercury-tube (Plate X. fig. 7) and Barometer Mercurial vacuum.
5CHAPTER II. SOME GENERAL DESCRIPTIONS OF AURORÆ.
68Air-tubes.
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6CHAPTER III. SOME SPECIFIC DESCRIPTIONS OF AURORÆ, INCLUDING RESULTS OF THE ENGLISH ARCTIC EXPEDITION, 1875-76.
69Violet [negative] Pole, same tube.
7Captain Sabine’s Auroræ.
70Red [positive] Pole.
8Aurora seen at Sunderland, February 8th, 1817.
71Aurora (air)-tube. (Plate XV. spectrum 4.)
9Description of Aurora by Dr. Hayes, 6th January, 1861.
72Phosphorescent tube.
10Prof. Lemström’s Aurora of 1st September, 1868.
73Spark in Air.
11Mr. J. R. Capron’s Aurora of October 24th, 1870.
74Spark over Water.
12Mr. Barker’s (superposed) red and white Auroræ, 9th November (1870?).
75Phosphoretted-Hydrogen Flame.
13Mr. J. R. Capron’s Aurora of February 4th, 1872.
76Iron-Spectrum.
14Description of an Aurora seen at Cardiff.
77Spectrum of Mercury.
15Mr. J. R. Capron’s Aurora, seen at Guildown, Guildford, February 4th, 1874.
78The following Table was compiled for the purpose of comparing the foregoing results with the Aurora-spectrum.
16Mr. Herbert Ingall’s Aurora, July 18th, 1874.
79CHAPTER XII. SOME NOTES ON PROFESSOR ÅNGSTRÖM’S THEORY OF THE AURORA-SPECTRUM.
17Mr. J. R. Capron’s White Aurora of September 11th, 1874.
80CHAPTER XIII. THE OXYGEN-SPECTRUM IN RELATION TO THE AURORA (PROCTER AND SCHUSTER).
18Dr. Allnatt’s Aurora, June 9th, 1876.
81PART III. MAGNETO-ELECTRIC EXPERIMENTS IN CONNEXION WITH THE AURORA.
19Herr Carl Bock’s Lapland Aurora, 3rd October, 1877.
82INTRODUCTION.
20Rev. T. W. Webb’s Aurora.
83CHAPTER XIV. EXAMINATION OF GEISSLER TUBES UNDER ACTION OF THE MAGNET.
21The English Arctic Expedition 1875-76, under Capt. Sir George Nares.
84Nitrogen-tubes.
22Aurora Australis.
85Oxygen-tubes.
23Prof. Piazzi Smyth’s Typical Auroræ.
86Hydrogen-tubes.
24CHAPTER IV. PHENOMENA SIMULATING AURORÆ.
87Water-Gas (H₂O) tube.
25Auroric Lights (Kinahan).
88Ammonia-tube.
26Luminous Arch.
89Carbonic-Acid tube.
27CHAPTER V. SOME QUALITIES OF THE AURORA.
90Chlorine-tubes.
28Noises attending Auroræ.
91Iodine-tubes.
29Colours of the Aurora.
92Bromine-tubes.
30Height of the Aurora.
93Silicic-Fluoride tubes.
31Phosphorescence.
94Sulphuric-Acid (SO₃) tubes.
32Aurora and Ozone.
95Sulphur-tube.
33Polarization of the Aurora Light.
96CHAPTER XV. EFFECT OF MAGNET ON A CAPILLARY GLASS TUBE.: Action of Magnet on a bar of heavy glass.
34Number of Auroræ.
97CHAPTER XVI. EFFECT OF MAGNET ON WIDE AIR (AURORA) TUBE.
35Duration of Aurora.
98Note on Stratification.
36The Travelling of Auroræ.
99Effect of Magnet on Plücker (Air-) Tube.
37Geographical Distribution of Auroræ (Fritz and Loomis).
100Effect of Magnet on Plücker Tube (Tin Chloride).
38Extent and principal Zone of the Aurora.
101Effect of Magnet on Tin-Chloride Geissler Tube.
39CHAPTER VI. THE AURORA IN CONNEXION WITH OTHER PHENOMENA.
102CHAPTER XVII. EFFECT OF MAGNET ON BULBED PHOSPHORESCENT TUBE.
40Auroræ and Clouds.
103Effect of Magnet on small Phosphorescent (powder) Tubes.
41Aurora and Thunder-storms.
104Lighting-up Tubes with One Wire only (Marquis of Salisbury’s Observations).
42Aurora and the Magnetic Needle.
105CHAPTER XVIII. ACTION OF THE MAGNET ON THE ELECTRIC SPARK.
43Auroræ, Magnetic Disturbances, and Sun-spots.
106CHAPTER XIX. THE DISCHARGE IN VACUO IN LARGER VESSELS, AND MAGNETIC EFFECTS THEREON.
44Aurora and Electricity.
107Some of Baron Reichenbach’s Magnetic Researches tested.
45Aurora and Meteoric Dust.
108SUMMARY OF THE FOREGOING EXPERIMENTS AND THEIR RESULTS.
46The Aurora and the Planets Venus and Jupiter.
109CHAPTER XX. SOME CONCLUDING REMARKS.
47The Aurora and the Zodiacal Light.
110APPENDICES.
48CHAPTER VII. AURORA-LIKE PATCHES ON THE PARTIALLY-ECLIPSED MOON.
111APPENDIX A. REFERENCES TO SOME WORKS AND ESSAYS ON THE AURORA.
49CHAPTER VIII. AURORA AND THE SOLAR CORONA.
112APPENDIX B. EXTRACTS FROM THE MANUAL AND INSTRUCTIONS FOR THE (ENGLISH) ARCTIC EXPEDITION, 1875.
50CHAPTER IX. SUPPOSED CAUSES OF THE AURORA.
113Spectroscopic Observations. By Prof. G. G. Stokes, Sec. R.S.
51Prof. Lemström’s Theory.
114Spectrum of the Aurora.
52Theories of MM. Becquerel and De la Rive.
115Polarization of Light. By W. Spottiswoode, M.A., LL.D., Treas. R.S.
53M. Planté’s Electric Experiments.
116Instructions in the use of the Spectroscopes supplied to the Arctic Expedition. By J. Norman Lockyer, F.R.S.
54PART II. THE SPECTRUM OF THE AURORA.
117Spectroscopic Work.
55CHAPTER X. SPECTROSCOPE ADAPTED FOR THE AURORA.
118General Observations regarding the Spectrum of the Aurora[17].
56Spectrum of the Aurora described.
119APPENDIX C. EXTRACTS FROM PARLIAMENTARY BLUE BOOK, CONTAINING THE “RESULTS DERIVED FROM THE ARCTIC EXPEDITION 1875-76.” (Eyre and Spottiswoode, 1878.)
57Flickering of the Green Line.
120Auroras observed 1875-1876, at Floebery Beach and Discovery Bay.
58Mr. Backhouse’s graphical Spectra of four Auroræ.
121Table of Dates when Auroras were observed by the Arctic Expedition, 1875-76.
59Lord Lindsay’s Aurora-Spectrum, 21st October, 1870.
122Auroras and Magnetic Disturbances.
60Spectrum of the Aurora Australis.
123APPENDIX D. THE AURORA AND OZONE.
61Prof. Piazzi Smyth’s Aurora-Spectra.
124APPENDIX E. INQUIRIES INTO THE SPECTRUM OF THE AURORA.
62Author’s Catalogue of the Auroral Lines.
1251. Observations of the Aurora.
63Theories in relation to the Aurora and its Spectrum.
1262. On the Spectra of some Gases in Geissler’s Tubes, as well as on the Spectrum of the Atmospheric Air.
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