Scientific amusements . A water-bottle employed as a convergent lens to support the object we wish to examine, which ismagnified several diameters. If a fly, for instance, is atthe end of the wire, we find it is highly magnified whenseen through the glass balloon. By examining the insectthrough the water in the balloon, we can distinguish everyfeature of its organism, thanks to this improvised .little apparatus may also serve to increase the in-tensity of a luminous focus of feeble power, such as a 42 LIGHT. lighted candle. It is often employed in this manner bywatchmakers. If a
Scientific amusements . A water-bottle employed as a convergent lens to support the object we wish to examine, which ismagnified several diameters. If a fly, for instance, is atthe end of the wire, we find it is highly magnified whenseen through the glass balloon. By examining the insectthrough the water in the balloon, we can distinguish everyfeature of its organism, thanks to this improvised .little apparatus may also serve to increase the in-tensity of a luminous focus of feeble power, such as a 42 LIGHT. lighted candle. It is often employed in this manner bywatchmakers. If a bottle fiill of water is placed on atable, and exposed to the rays of the sun, the head of alucifer match being placed in the brightest centre of lightcaused by the refracted rays, the match will not fail to. A simpJe microscope foimed with a glass balloon full of water. ignite. We have succeeded in this experiment evenunder an October sun, and still more readily in warmweather. In the Conservatoire des Arts in Paris a visitor willalways notice a number of people looking at the mirrorsin the optical cabinets. These mirrors deform and DEFORMED IMAGES. 43 distort objects in a very curious manner, and people findmuch amusement in gazing into them till they are movedon by the attendants. Such experiments create greatinterest, and a very excellent substitute for these may befound in a coffee-pot or even in a large spoon, and all thegrotesque appearance will be seen in the polished least costly apparatus will sometimes produce themost marvellous effects. Look at a soap-bubble blownfrom the end of a straw. When the sphere has a verysmall diameter the pellicule is colourless and transparent;but as the air enters by degrees, pressing upon all partsof the concave surface equally, the bub
Size: 1402px × 1782px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade189, booksubjectscientificrecreations
