A Treatise on the Kaleidoscope1858 |
From inside the book
Արդյունքներ 18–ի 1-ից 5-ը:
Էջ 1
... led to remark the circular arrangement of the images of a candle round a centre , and the multiplication of the sectors formed by the extremities A of the plates of glass . In consequence , however INTRODUCTION-HISTORY OF THE KALEIDOSCOPE,
... led to remark the circular arrangement of the images of a candle round a centre , and the multiplication of the sectors formed by the extremities A of the plates of glass . In consequence , however INTRODUCTION-HISTORY OF THE KALEIDOSCOPE,
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... 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 experiment might ...
... 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 experiment might ...
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... extremity A of the mirror , and m n o p , its image seen by an eye to the right hand of E , and which , by the principles of catoptrics , will be similar to the object and similarly situated with respect to the mirror a E Now , if the ...
... extremity A of the mirror , and m n o p , its image seen by an eye to the right hand of E , and which , by the principles of catoptrics , will be similar to the object and similarly situated with respect to the mirror a E Now , if the ...
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... extremity of a plain mirror , its image formed by reflec- tion from the mirror cannot unite with the object in forming a conjoined and symmetrical picture , unless the eye is in the plane of the mirror . When two mirrors , therefore ...
... extremity of a plain mirror , its image formed by reflec- tion from the mirror cannot unite with the object in forming a conjoined and symmetrical picture , unless the eye is in the plane of the mirror . When two mirrors , therefore ...
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... extremities A O , BO of the mirrors , then it is easy to see that the symmetry of the picture will not be affected by the deviation of the eye from the point E , and , in consequence of the enlargement of the sector , seen by direct ...
... extremities A O , BO of the mirrors , then it is easy to see that the symmetry of the picture will not be affected by the deviation of the eye from the point E , and , in consequence of the enlargement of the sector , seen by direct ...
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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.