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Excerpt from On Magnetic Rotatory Power, Especially of Aromatic Compounds
The circle is 405 cm. (16 in.) in diameter, and is provided with an edge made of white metal (platinite) on which the divisions are marked. The divisions are the of a degree this scale gives, with avemier of a comb shape, which is placed in the eye-piece of the highly magnifying telescope I, Fig. 2, the l/l20th of a degree, or 30 seconds of arc. The scale is reflected into the telescope by means of a right angled prism, and illuminated by means of a small gas jet in a brass lantern. As all the determinations I have hitherto made have been relative to the rotations of water, and only a small part of the circle has, therefore, been used, a double vemier has not been required. It has also been found experimentally that the relative rotations measured with'the polarising prism and circle at the two positions 180° apart give practically the same results. J is a clamp to fix the circle when roughly adjusted by hand, and K is a double threaded screw for the fine adjustment. At first, a single threaded screw was employed, but it was found to give too slow a motion for the eye to readily discern the changes in the shadow.
The position of the analysing prism is adjusted by the tangent screw M, Fig. 2.
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On Magnetic Rotatory Power, Especially of Aromatic Compounds (Classic Reprint)
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Paperback. Zustand: New. Print on Demand. This book on magnetic rotary power features enhancements in apparatus and techniques, along with updates on the subject's theoretical framework. The book reviews prior research on this topic and offers corrections to previous findings. It examines several groups and elements with low magnetic rotation and how they can yield products with lower rotations than expected when combined with molecules of relatively high rotation. The author investigates mixtures of compounds with varying and identical specic rotations, demonstrating whether mixtures of molecules of different and similar rotatory power produce additive or non-additive results. This book is a comprehensive resource for those interested in the theoretical and experimental aspects of magnetic rotary power and its applications in chemistry. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Bestandsnummer des Verkäufers 9781334335563_0
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On Magnetic Rotatory Power, Especially of Aromatic Compounds Classic Reprint
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On Magnetic Rotatory Power, Especially of Aromatic Compounds Classic Reprint
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