Scientific amusements . Fig. 100.—The Loo^ ready : showing the Comb between the renciis. Ihe Warp is ex-tended between the Pencils : the Thread of the Weft passes transversely by the Aid of theShuttle. THE- PAPER RINGS. This little arrangement, whichwe are abo ut to explainwiir creJate some astonishment amongst those who havenot been initiated in the manner of performance ; it givesrise tosome very interesting geometrical questions. Wewill show how it is done. Look at the illustration (Fig. loi). Here are threepaper rings. They ought to be in reality of much greater 128 MECHANICAL TOYS, ETC. d
Scientific amusements . Fig. 100.—The Loo^ ready : showing the Comb between the renciis. Ihe Warp is ex-tended between the Pencils : the Thread of the Weft passes transversely by the Aid of theShuttle. THE- PAPER RINGS. This little arrangement, whichwe are abo ut to explainwiir creJate some astonishment amongst those who havenot been initiated in the manner of performance ; it givesrise tosome very interesting geometrical questions. Wewill show how it is done. Look at the illustration (Fig. loi). Here are threepaper rings. They ought to be in reality of much greater 128 MECHANICAL TOYS, ETC. diameter in proportion to their length, but in the cut wehave reduced the circumference so as not to insert such alarge picture as would be necessary if the true dimensions N. \ \. Fjg. loi.—The Papsr Rings. Firstly, I give you ring No. i with a pair of scissors,and request you to cut it as indicated by the dottedline. You will then obtain two rings, as shown under- MECHANICAL TOYS, ETC. 129 neath—No. i. The dotted line will not be in the paperbands in practice. Then I request you to cut ring No. 2 in the samemanner ; but this time you will be surprised to find inyour hands, when you have finished cutting round thering, not two rings, as at first, but one long ring—No. 2^twice as large as either of the former rings. Now for No. 3. There is another surprise in you cut the third ring you will be astonished with theresult. You will again obtain two rings, but one willbe^ looped inside the other, as in No. 3. Let usexplain this trick. You must prepare paper bands metre in width,and I or li metres in length. Take the first strip, cutand join its ends directly in the ordinary manner, asshown in fig. i, so that the same side of the paper formsthe ex
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Keywords: ., bookcentury1800, bookdecade189, booksubjectscientificrecreations
