A Treatise on the Kaleidoscope1858 |
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Page 16
... natural pro- ductions , and all forms , in short , which are composed of two forms , similar and similarly situated with regard to a given line or plane . Now , it is obvious that all compound forms of this kind are composed of a direct ...
... natural pro- ductions , and all forms , in short , which are composed of two forms , similar and similarly situated with regard to a given line or plane . Now , it is obvious that all compound forms of this kind are composed of a direct ...
Page 93
... naturally accumulates , the greatest facility is given by the preceding construction in keeping them clean . For this purpose , the large cone must be unscrewed ; the re- flectors having been previously closed , by turning the index to ...
... naturally accumulates , the greatest facility is given by the preceding construction in keeping them clean . For this purpose , the large cone must be unscrewed ; the re- flectors having been previously closed , by turning the index to ...
Page 119
... natural philosophy , delivered at Guy's Hospital , by that eminent chemist , the late William Allen , Esq . , F.R.S. The patterns which are created by the Telescopic Kaleido- scope from natural objects , or from objects independent of ...
... natural philosophy , delivered at Guy's Hospital , by that eminent chemist , the late William Allen , Esq . , F.R.S. The patterns which are created by the Telescopic Kaleido- scope from natural objects , or from objects independent of ...
Page 140
... natural object , such as a leaf , he may first try the effect which it will produce when applied in its natural state to the instrument , and he may then carve either the whole or the half of it in stone , and then examine what will be ...
... natural object , such as a leaf , he may first try the effect which it will produce when applied in its natural state to the instrument , and he may then carve either the whole or the half of it in stone , and then examine what will be ...
Page 155
... naturally as powerful as that of sound , and that a person who has never listened to any other music but that of nature , nor seen any other colours but those of the material world , might have his feelings as powerfully ex- cited ...
... naturally as powerful as that of sound , and that a person who has never listened to any other music but that of nature , nor seen any other colours but those of the material world , might have his feelings as powerfully ex- cited ...
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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.