Handbook of the polariscope and its pracitcal applications / adapted from the German editon of H. Landolt, by D.C. Robb and V.H. Veley.

  • Landolt, H. (Hans), 1831-1910.
Date:
1882
Catalogue details

Licence: Public Domain Mark

Credit: Handbook of the polariscope and its pracitcal applications / adapted from the German editon of H. Landolt, by D.C. Robb and V.H. Veley. Source: Wellcome Collection.

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    C. Dependence of Optical Activity upon Chemical Constitution. PAGE § 14. Theory of Hoppe-Seyler and Mulder. Active radicles. Theory of Le Bel and Van’t Hoff. Asymmetrical carbon. Tables to illustrate influence of asymmetrical carbon .. • • • • * *' ' ' ’ ‘ §15. Artificial production of active substances. Explanation of inactivity of most artificial substances .. • • • • • • • • '' §16. Optical properties of derivatives of active bodies. Explanation by Van t Hoff’s hypothesis. Rotation influence by presence of acids, alkalies, or neutral salts .. in physical laws of circular polarization. § 17. Amount of rotation dependent on thickness of medium. Standard thickness for solids and liquids .. • • • • • • ; • ’* §18. Amount of rotation dependent on wave-length. Rotatory dispersion. Dis- persion formulae. Relation of au to ctj § 19. Abnormal rotatory dispersion in tartaric acid .. 42 43 47 IV. SPECIFIC ROTATORY POWER. A. Definition of Specific Rotation. §20. Specific rotation of active liquids. Influence of density and temperature .. 49 § 21. Specific rotation of active solids in solution. Method of observation and ^ formulae for calculating [o] .. .. . •• •'* § 22. Influence of temperature on specific rotation B. Dependence of Specific Rotation on Nature and Amount of Solvent. § 23. § 24. § 25. § 26. § 27. § 28. C. Determination of the True Specific Rotation of Active Sub- stances from the Rotatory Power of their Solutions. § 29. Earlier experiments of Biot. Recent researches by Landolt on turpentine - oils, nicotine, and ethyl tartrate .. .. • • • • • .. 64 § 30. Determination of the specific rotation of left-handed oil of turpentine and of its mixtures with alcohol, benzene, and acetic acid respectively .. 66 § 31. Do. of right-handed oil of turpentine and of its mixtures with alcohol .. 70 § 32. Do. of nicotine and of its mixtures with alcohol and water 72 Earlier observations on the variability of the specific rotation of substances in solution .. .. • • • • • • • • • * ‘ * Variation of specific rotation with amount of inactive solvent. Calcula- tion of law of variation for solutions in a single liquid Substitution of weight per cent, of active substance p, or concentration r m the formulae, instead of weight per cent, of inactive liquid q .. Simultaneous influence of two inactive bodies upon a single active one Phenomenon of bi-rotation in milk-sugar and certain glucoses Theories as to the cause of variation of specific rotation 53 59 59 61 62