Articoli correlati a The Great Architect; As Manifested in the Material...
Sinossi
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1866 edition. Excerpt: ...to H--thus showing that there are limits of accuracy beyond which observation can M. Kirchhoff, by employing a much more dispersive apparatus and higher magnifying powers, has discovered many more lines than those detected by Fraunhofer and has resolved into groups several of the lines which previously appeared single. not go. The values thus determined were for long considered as independent, unrelated quantities; but it has recently been shown that they are so related to each other by certain definite laws, that the wave-length of B being given, according to any standard of measurement, those of all the other lines may be deduced from it, by a simple calculation founded on those laws. The numbers thus found differ from the observed quantities less than the two sets of these differ from each other. Assuming the wave-length of B as unity, the proportional wave-lengths corresponding to the other lines, as deduced by these laws, are represented by the following decimal fractions: C=0953291, D=0855626, E=0'764331, F=:0-706140, G=0-623944, H=0-573248 The wave-length of B, in decimal parts of an English inch, is nearly 0'0000271; and that of the others, according to the same standard, may be found by multiplying this quantity by the above decimal fractions. The next characteristic of the diffracted spectrum is, that the wave-length of the red extremity is exactly double of that corresponding to the violet extremity, so that these two stand to each other in the same relation as a musical tonic does to its octave. The colours in this spectrum are all pure, the coloured light being incapable of further decomposition. The lines of junction of the colours are also sharply defined, and the wave-lengths corresponding to these lines of junction bear...
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