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SIX LECTURES ON LIGHT
DELIVERED IN THE UNITED STATES
1872-1873
BY
JOHN TYNDALL, D.C.L., LL,D., F.R.S.
PREFACE TO THE FOURTH EDITION.
CONTENTS.
ON LIGHT
LECTURE I.
§ 1. Introduction.
§ 2. Subject of the Course. Source of Light employed.
§ 3. Rectilineal Propagation of Light. Elementary Experiments. Law of Reflection.
§ 4. The Refraction of Light. Total Reflection.
§ 5. Velocity of Light. Aberration. Principle of least Action.
§ 6. Descartes' Explanation of the Rainbow.
§ 7. Analysis and Synthesis of Light. Doctrine of Colours.
§ 8. Colours of Pigments as distinguished from Colours of Light.
LECTURE II.
§ 1. Origin and Scope of Physical Theories.
§ 2. The Emission Theory of Light.
§ 3. The Undulatory Theory of Light.
§ 4. Wave-Motion, Interference of Waves, 'Whirlpool Rapids' of Niagara.
§ 5. Analogies of Sound and Light.
§ 6. Interference of Light.
§ 7. Colours of thin Films. Observations of Boyle and Hooke.
§ 8. Newton's Rings. Relation of Colour to Thickness of Film.
§ 9. Theory of 'Fits' applied to Newton's Rings.
§ 10. The Diffraction of Light.
§ 11. Application of the Wave-theory to the Phenomena of Diffraction.
LECTURE III.
§ 1. Derivation of Theoretic Conceptions from Experience.
§ 2. Theory of Crystallization.
§ 3. Ordinary Refraction of Light explained by the Wave Theory.
§ 4. Double Refraction of Light explained by the Wave Theory.
§ 4. Double Refraction of Light explained by the Wave Theory.
§ 5. Polarization of Light explained by the Wave Theory.
LECTURE IV.
§ 1. Action of Crystals on Polarized Light: the Nicol Prism.
§ 2. Colours of Films of Selenite in Polarized Light.
§ 3. Colours of Crystals in Polarized Light explained by the Undulatory Theory.
§ 4. Colours produced by Strain and Pressure.
§ 5. Colours of Unannealed Glass.
§ 6. Circular Polarization.
§ 7. Complementary Colours of Bi-refracting Spar in Circularly Polarized Light. Proof that Yellow and Blue are Complementary.
§ 8. The Magnetization of Light.
§ 9. Iris-rings surrounding the Axes of Crystals.
§ 10. Power of the Wave Theory.
§ 11. The Blue of the Sky.
§ 12. Artificial Sky.
§ 13. Polarization of Skylight.
LECTURE V.
§ 1. Range of Vision and of Radiation.
§ 2. Ultra-violet Rays: Fluorescence.
§ 3. The Heat of the Electric Beam. Ignition through a Lens of Ice. Possible Cometary Temperature.
§ 4. Combustion of a Diamond by Radiant Heat.
§ 5. Ultra-red Rays: Calorescence.
§ 6. Identity of Light and Radiant Heat. Reflection from Plane and Curved Surfaces. Total Reflection of Heat.
§ 7. Invisible Images formed by Radiant Heat.
§ 8. Polarization of Heat.
§ 9. Double Refraction of Heat.
§ 10. Magnetization of Heat.
§ 11. Distribution of Heat in the Electric Spectrum.
LECTURE VI.
SUMMARY AND CONCLUSION.
APPENDIX.
ON THE SPECTRA OF POLARIZED LIGHT.
MEASUREMENT OF THE WAVES OF LIGHT.
INDEX.
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