A Treatise on the Kaleidoscope1858 |
From inside the book
Արդյունքներ 28–ի 1-ից 5-ը:
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... 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 .
... 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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David Brewster. objects , which are absolutely necessary to produce that magical union of parts , and that mathematical symmetry throughout the whole picture , which , independently of all colouring , give to the visions of the ...
David Brewster. objects , which are absolutely necessary to produce that magical union of parts , and that mathematical symmetry throughout the whole picture , which , independently of all colouring , give to the visions of the ...
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... necessary . 1. That the reflectors should be placed at an angle , which was an even or an odd aliquot part of a circle , when the object was regular , and similarly situated with respect to both the mirrors ; or the even aliquot part of ...
... necessary . 1. That the reflectors should be placed at an angle , which was an even or an odd aliquot part of a circle , when the object was regular , and similarly situated with respect to both the mirrors ; or the even aliquot part of ...
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... necessary to draw up the following short treatise , for the purpose of explaining , in as popular a manner as I could , the princi- ples and construction of the Kaleidoscope ; of describing the different forms in which it is fitted up ...
... necessary to draw up the following short treatise , for the purpose of explaining , in as popular a manner as I could , the princi- ples and construction of the Kaleidoscope ; of describing the different forms in which it is fitted up ...
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... necessary to the produc tion of symmetrical and beautiful forms , and may be all effected by particular methods of construction , we shall pro- ceed to investigate the principles upon which these methods are founded , in so far as the ...
... necessary to the produc tion of symmetrical and beautiful forms , and may be all effected by particular methods of construction , we shall pro- ceed to investigate the principles upon which these methods are founded , in so far as the ...
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Common terms and phrases
A O E angle A O B angles of incidence angular aperture angular point apparent magnitude arranged beautiful brass rim catoptrics cell CHAPTER circle circular field coloured glass combination composed cone constructed convex lens DAVID BREWSTER direct vision distance effects produced equal exhibited Fcap figure fixed focal length half History images formed inches inclination Indigo instrument intensity inverted image JOHN WILSON CROKER Kaleido Kaleidoscope last sector lens light looking-glass LORD manner motion move number of reflexions number of sectors object placed object-box object-plate observer odd aliquot optical pair pattern pieces plane mirrors plates of glass Portrait position Post 8vo principles re-entering angles reflected images reflectors ring salient angles screw Second Edition sector A O B seen by direct shown in Fig side similarly situated speculum metal surface symmetrical picture symmetrically related Third Edition tion 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.