A Treatise on the Kaleidoscope1858 |
From inside the book
Արդյունքներ 51–ի 1-ից 5-ը:
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... DISTANCE , XI . ON THE CONSTRUCTION AND USE OF POLYANGU- LAR KALEIDOSCOPES , IN WHICH THE REFLEC TORS CAN BE FIXED AT ANY ANGLE , • PAGE 81 8888 1. Bate's Polyangular Kaleidoscope with Me- tallic Reflectors , 89 2. Bate's Polyangular ...
... DISTANCE , XI . ON THE CONSTRUCTION AND USE OF POLYANGU- LAR KALEIDOSCOPES , IN WHICH THE REFLEC TORS CAN BE FIXED AT ANY ANGLE , • PAGE 81 8888 1. Bate's Polyangular Kaleidoscope with Me- tallic Reflectors , 89 2. Bate's Polyangular ...
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... distance of the candles , & c . , from the ends of the reflectors , their arrangement was so destitute of symmetry , that I was not induced to give any farther attention to the subject . On the 7th of February 1815 , when I discovered ...
... distance of the candles , & c . , from the ends of the reflectors , their arrangement was so destitute of symmetry , that I was not induced to give any farther attention to the subject . On the 7th of February 1815 , when I discovered ...
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... distance from their extremities , yet I had scarcely made a step towards the invention of the Kaleidoscope . The effects , however , which I had observed , were sufficient to prepare me for taking advantage of any suggestion which ...
... distance from their extremities , yet I had scarcely made a step towards the invention of the Kaleidoscope . The effects , however , which I had observed , were sufficient to prepare me for taking advantage of any suggestion which ...
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... distance from the reflectors . From the approximation to perfect symmetry which the figure now displayed , compared with the great deviation from symmetry which I had formerly observed , it was obvious that the progression from the one ...
... distance from the reflectors . From the approximation to perfect symmetry which the figure now displayed , compared with the great deviation from symmetry which I had formerly observed , it was obvious that the progression from the one ...
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... distance from the eye . This , also , was 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 ...
... distance from the eye . This , also , was 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 ...
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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.