A Treatise on the Kaleidoscope1858 |
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... LENGTH AND BREADTH OF THE REFLECTORS , 51 VII . ON THE CONSTRUCTION AND USE OF THE SIMPLE KALEIDOSCOPE , 59 VIII . - ON THE SELECTION OF OBJECTS FOr the KaleidO- SCOPE , AND ON THE MODE OF CONSTRUCTING THE ОВЈЕСТ - ВОХ , • IX . - ON THE ...
... LENGTH AND BREADTH OF THE REFLECTORS , 51 VII . ON THE CONSTRUCTION AND USE OF THE SIMPLE KALEIDOSCOPE , 59 VIII . - ON THE SELECTION OF OBJECTS FOr the KaleidO- SCOPE , AND ON THE MODE OF CONSTRUCTING THE ОВЈЕСТ - ВОХ , • IX . - ON THE ...
Page 3
... Ellip- tical Polarization , and are explained at great length in my paper on that sub- ject , published in the Philosophical Transactions for 1830 . arranged in a manner far more regular and symmetrical than HISTORY OF THE KALEIDOSCOPE . 3.
... Ellip- tical Polarization , and are explained at great length in my paper on that sub- ject , published in the Philosophical Transactions for 1830 . arranged in a manner far more regular and symmetrical than HISTORY OF THE KALEIDOSCOPE . 3.
Page 6
... length , that the images of objects , of all magnitudes and at all distances , might be distinctly formed at the end of the reflectors , and intro- duced into the pictures created by the instrument in the same manner as if they had been ...
... length , that the images of objects , of all magnitudes and at all distances , might be distinctly formed at the end of the reflectors , and intro- duced into the pictures created by the instrument in the same manner as if they had been ...
Page 9
... length is six inches , and increasing in proportion as the length increases . When these two plates are put together at an angle of 60 ° , or the sixth part of a circle , as shown in Fig PRELIMINARY PRINCIPLES , ETC. 9 -PRELIMINARY ...
... length is six inches , and increasing in proportion as the length increases . When these two plates are put together at an angle of 60 ° , or the sixth part of a circle , as shown in Fig PRELIMINARY PRINCIPLES , ETC. 9 -PRELIMINARY ...
Page 35
... length . Before concluding this chapter , it may be proper to men- tion a very remarkable effect produced by moving the two plain mirrors along one of two lines placed at right angles to each other . When the aperture of the mirrors is ...
... length . Before concluding this chapter , it may be proper to men- tion a very remarkable effect produced by moving the two plain mirrors along one of two lines placed at right angles to each other . When the aperture of the mirrors is ...
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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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Page 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.