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Excerpt from A Modified Method for the Determination of Relative Wave-Lengths
While Young actually did compute from Newton's data not only the relative, but also the absolute wave-lengths for the sev eral Spectrum colors, we can hardly class these values as stand ards of wave-length and we may say that all spectroscopic standards established prior to Michelson's evaluation of three wave-lengths in terms of the meter, were derived from observa tions on diffraction spectra produced by the grating. Let us out line the fundamental principles oi the grating methods, consider ing the grating as -a particular type of interferometer. If we throw the grating data for the determination of relative wave lengths into the form of the fundamental equation (i) we have, in general, for any grating and any combination of wave-lengths and orders.
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A Modified Method for the Determination of Relative Wave-Lengths
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Paperback. Condizione: New. Print on Demand. This book presents a method for determining the relative wavelengths of light, which is more direct and involves fewer assumptions than previous methods. The author has tested the precision and reliability of this method, and the results are promising. The method has several advantages over the method of diameters. It is more direct, involves fewer assumptions, and permits a more rigorous control of errors. There is less chance of apparatus errors, and the errors due to small temperature changes are eliminated without resorting to a thermostat. The personal error in the measurement of the order of interference is also eliminated to a greater extent. This book is a valuable contribution to the field of spectroscopy, and it is likely to be of interest to a wide range of readers, from students to researchers. 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. Codice articolo 9781333760397_0
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