A Treatise on the Kaleidoscope1858 |
From inside the book
Արդյունքներ 48–ի 1-ից 5-ը:
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... POSITION OF THE EYE , 37 · V. - ON THE EFFECTS PRODUCED UPON THE SYMMETRY OF THE PICTURE BY VARYING THE POSITION OF THE OBJECT , 46 VI . - ON THE INTENSITY OF THE LIGHT IN DIFFERENT PARTS OF THE FIELD , AND ON THE EFFECTS PRO- DUCED BY ...
... POSITION OF THE EYE , 37 · V. - ON THE EFFECTS PRODUCED UPON THE SYMMETRY OF THE PICTURE BY VARYING THE POSITION OF THE OBJECT , 46 VI . - ON THE INTENSITY OF THE LIGHT IN DIFFERENT PARTS OF THE FIELD , AND ON THE EFFECTS PRO- DUCED BY ...
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... richness of the polarized tints , it was wholly destitute of symmetry , as I was then ignorant of those positions for the eye and the objects , which are absolutely necessary to produce that magical 2 HISTORY OF THE KALEIDOSCOPE .
... richness of the polarized tints , it was wholly destitute of symmetry , as I was then ignorant of those positions for the eye and the objects , which are absolutely necessary to produce that magical 2 HISTORY OF THE KALEIDOSCOPE .
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... position to the other ; and it became highly pro- bable , that a position would be found where the symmetry was mathematically perfect . By investigating this subject optically , I discovered the leading principles of the Kalei- doscope ...
... position to the other ; and it became highly pro- bable , that a position would be found where the symmetry was mathematically perfect . By investigating this subject optically , I discovered the leading principles of the Kalei- doscope ...
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... position in which the eye was necessarily placed when looking through the fluid with which the glass trough was partially filled . Upon these principles I constructed an instrument , in which I fixed permanently , across the ends of the ...
... position in which the eye was necessarily placed when looking through the fluid with which the glass trough was partially filled . Upon these principles I constructed an instrument , in which I fixed permanently , across the ends of the ...
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David Brewster. position of symmetry at the end of the reflectors , produced a deviation from beauty and symmetry in the ... position in which alone perfect symmetry could be obtained . When the Kaleidoscope was brought to this degree of ...
David Brewster. position of symmetry at the end of the reflectors , produced a deviation from beauty and symmetry in the ... position in which alone perfect symmetry could be obtained . When the Kaleidoscope was brought to this degree of ...
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Common terms and phrases
A O E aliquot angle A O B angles of incidence angular aperture angular point aperture A O B apparent magnitude beauty brass rim broad milled Camera Obscura cell centre CHAPTER circle circular field coloured glass combination composed cone construction convex lens direct vision distance effects produced equal exhibited Fcap figure fixed focal length History images formed inches inclination instrument inverted image JOHN WILSON CROKER Kaleido Kaleidoscope last sector light luminous m n o p manner metallic motion move object-box object-plate objects placed obliquely observer optical pieces plane mirrors plates of glass polygon Portrait position Post 8vo preceding principles rays re-entering angles reflected images regular polygon ring round salient angles screw Second Edition seen by direct shown in Fig side speculum metal square stationary symmetrical picture Third Edition three reflectors tion triangle tube velocity Vols Woodcuts
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Էջ 1 - Medal, the reflectors were in some cases inclined to each other, and he had occasion to remark the circular arrangement of the images of a candle round a centre, or the multiplication of the sectors formed by the extremities of the glass plates. In repeating, at a subsequent period, the experiments of M. Biot on the action of fluids upon light, Dr B.