Children's Toys, and Some Elementary Lessons in General Knowledge which They TeachC. Kegan Paul, 1877 - 292 pagini |
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Pagina 9
... rays of light can pass , and conceive these to fall , as they would naturally do , unless the sun were very high , on the wall opposite to the window . And lastly , fancy that a sheet , repre- sented by this piece of paper , is hung up ...
... rays of light can pass , and conceive these to fall , as they would naturally do , unless the sun were very high , on the wall opposite to the window . And lastly , fancy that a sheet , repre- sented by this piece of paper , is hung up ...
Pagina 11
... rays by which it has been painted are diverted or fail , but some little time , very short no doubt , but none the less a real and definite space of it , which is quite appreciable and can be measured , elapses before the impression ...
... rays by which it has been painted are diverted or fail , but some little time , very short no doubt , but none the less a real and definite space of it , which is quite appreciable and can be measured , elapses before the impression ...
Pagina 13
... ray of light is , in fact , mechanically speaking , a line of waves following one another in a file which issues continuously from the source of illumination . Light is thus a system of ... rays of which it consists CHILDREN'S TOYS . 13.
... ray of light is , in fact , mechanically speaking , a line of waves following one another in a file which issues continuously from the source of illumination . Light is thus a system of ... rays of which it consists CHILDREN'S TOYS . 13.
Pagina 14
... rays , as they pass from the object in question to the eye of the spectator , through some medium which is capable of diverting them from their naturally straight course . Phosphorescence is a property which all objects seem to possess ...
... rays , as they pass from the object in question to the eye of the spectator , through some medium which is capable of diverting them from their naturally straight course . Phosphorescence is a property which all objects seem to possess ...
Pagina 16
... rays only , and that of a cabbage leaf green ones alone , both colours being supplied exclusively by light , without any con- tribution whatever from the plant itself , in either case . Neither rose nor cabbage is a source of colour in ...
... rays only , and that of a cabbage leaf green ones alone , both colours being supplied exclusively by light , without any con- tribution whatever from the plant itself , in either case . Neither rose nor cabbage is a source of colour in ...
Termeni și expresii frecvente
absolutely infinite action acts altogether arrangement ascer attraction of gravity axis axle ball blow body burning-glass called centre of gravity centrifugal force Cloth colours contrivance course degree Demy 8vo described direction disc dolls Earth effect elastic energy exerted fact Fcap figure fluid force friction Frontispiece glass hoop Illustrations imparted india rubber International Scientific Series kite latter less light liquid LL.D looking-glass manner means mechanical metal mirror motion nature object paddle wheel parabola parallelogram particular persistence of vision pipe piston Poems Portrait position Post 8vo precise present pressure price 75 principle pump purpose question rays reflection resistance retina round Royal 16mo sails Second Edition seen side Small crown 8vo spindle spinning spot squirt string substance suppose surface teetotum thing Third Edition tion Translated tube tumbler valve vols watermill weight wheel whole William Godwin wind windmill zoetrope
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