A Treatise on the Kaleidoscope1858 |
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Page 33
... containing the fixed mirror , the 1st reflected image and direct object , 2d 4th • 6th 8th • 3d reflected image 5th · 7th 9th while in the same semicircle м b e , the 1st reflected image and 2d reflected image за · 5th 7th • 9th 4th 6th ...
... containing the fixed mirror , the 1st reflected image and direct object , 2d 4th • 6th 8th • 3d reflected image 5th · 7th 9th while in the same semicircle м b e , the 1st reflected image and 2d reflected image за · 5th 7th • 9th 4th 6th ...
Page 35
... containing the fixed mirror , The images 2 and 3 2 times the 4 and 5 reflexions , move with 4 formed by 6 and 7 8 velocity of the mirror ; 8 and 9 16 j whereas in the semicircle м a e , containing the movable mirror , - The images ...
... containing the fixed mirror , The images 2 and 3 2 times the 4 and 5 reflexions , move with 4 formed by 6 and 7 8 velocity of the mirror ; 8 and 9 16 j whereas in the semicircle м a e , containing the movable mirror , - The images ...
Page 60
... containing the reflectors to any line , such as m n , Fig . 2 , placed very obliquely to one of the reflectors A o , and open or shut the plates till the figure of a star is formed , composed of 8 , 10 , or 12 sectors , or with 4 , 5 ...
... containing the reflectors to any line , such as m n , Fig . 2 , placed very obliquely to one of the reflectors A o , and open or shut the plates till the figure of a star is formed , composed of 8 , 10 , or 12 sectors , or with 4 , 5 ...
Page 70
... containing loose objects , is an interesting addition to the instrument . When the Kaleidoscope is held horizontally , this small object - plate vibrates on its lower edge , either by a gentle motion of the tube , or by striking it ...
... containing loose objects , is an interesting addition to the instrument . When the Kaleidoscope is held horizontally , this small object - plate vibrates on its lower edge , either by a gentle motion of the tube , or by striking it ...
Page 73
... containing all the seven colours , namely , Red , Orange , Yellow , Green , Blue , Indigo , and Violet , in the proportion assigned to them by Sir Isaac FIG . 23 A 0 m ༤ P B Newton , and marked by the dotted lines . Bisect the AB at m ...
... containing all the seven colours , namely , Red , Orange , Yellow , Green , Blue , Indigo , and Violet , in the proportion assigned to them by Sir Isaac FIG . 23 A 0 m ༤ P B Newton , and marked by the dotted lines . Bisect the AB at m ...
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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.