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Updated: May 7, 2025
Hence, when it is mixed up with continuous light as in the case of the solar flames shining through our atmosphere it derives a relative gain in intensity from every addition to the dispersive power of the spectroscope with which the heterogeneous mass of beams is analysed.
This energy may be wasted, going aside from the point; it may also go against the successful performance of an act. It does harm by getting in the way. Compare the behavior of a beginner in riding a bicycle with that of the expert. There is little axis of direction in the energies put forth; they are largely dispersive and centrifugal.
A corresponding hand-drawing, for which M. Thollon received in 1886 the Lalande Prize, exhibits, not the diffractive, but the prismatic spectrum as obtained with bisulphide of carbon prisms of large dispersive power. The grating is an expensive tool in the way of light. Where there is none to spare, its advantages must be foregone.
To have exercised his vivifying and fertilising influence over the minds of others his intellect was bound to be of the dispersive order; it was essential that he should "take all knowledge to be his province," and that that eager, subtle, and penetrative mind should range as freely as it did over subject after subject of human interest; illuminating each of them in turn with those rays of true critical insight which, amid many bewildering cross-lights and some few downright ignes fatui, flash forth upon us from all Coleridge's work.
Huggins had suggested this observation in February, 1868, his idea being to use prisms of such great dispersive power that the continuous spectrum reflected by our atmosphere should be greatly weakened, while a bright line would suffer no diminution by the high dispersion.
Coupled with its great refraction, are the great dispersive and great reflective powers of diamond; hence the extraordinary radiance of the gem, both as regards white light and prismatic light. Velocity of Light. Aberration. Principle of least Action. In 1676 a great impulse was given to optics by astronomy.
It needs a powerfully dispersive spectroscope to show line-displacements of the minute order in question; and powerful dispersion involves a strictly proportionate enfeeblement of light.
Nature, as a whole, even the realms of crystals and stones, teaches us to discriminate good from evil; but, for me, not so powerfully, quietly, clearly, and openly as the plant and flower kingdom." The stronger this feeling of the universality of sex, the more dispersive, as it were, is the thought of the subject.
His genius was spacious and original, but it was too dispersive, too facile of diversion, too little disciplined, for the prolonged effort of combination which is indispensable to the greater constructions whether of philosophy or art. The excellent talent of economy and administration had been denied him; that thrift of faculty, which accumulates store and force for concentrated occasions.
The very lines, on which the process of evolution has moved, show the process to be dispersive.
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