This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1814 Excerpt: ...of paper Kites: Various questions in regard t- this amusement. Every one is acquainted with the amusement of the paper kite, a very curious small machine, which in its mechanism displays great ingenuity. To some however it may appear astonishing that an object of this nature thould form the subject of an academic ...
Read More
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1814 Excerpt: ...of paper Kites: Various questions in regard t- this amusement. Every one is acquainted with the amusement of the paper kite, a very curious small machine, which in its mechanism displays great ingenuity. To some however it may appear astonishing that an object of this nature thould form the subject of an academic memoir; for there is one on paper kites in the Transactions of the Academy of Berlin for the year 1756. But this surprise will cease when it is known, that Mr. Euler junior was a profound geometrician, at an age when most young persons see nothing in the paper kite but an object of amusement: to him therefore it could hardly fail of being a subject of meditation. It presents indeed several curious questions, and which for the most part cannot be treated without the higher analysis. This memoir therefore may be ranked among the juvenilia of a great mathematician. We shall Bot follow him in his profound calculations; we shall content ourselves with treating the subject in a less rigorous manner, but much easier to be understood. The kite, as is well known, is a plane surface, Abcd, pl. 6 fig. 35, as light as possible, shaped like an irregular rhombus; that is to say, formed of two triangles Bac, and Bdc, in which the angle A of the former is much greater than the angle t of the latter. The head is towards A, and D is the tail, to which is generally affixed a long cord, having pieces of paper attached to it at certain lengths: some much shorter are placed at the corners B and c, which causes the small machine, when elevated, to appear at a distance like a monstrous bird balancing itself in the air, by the help of its tail and its wings. At a point of the axis Ad, and towards the point E, is affixed a small cord, some hundreds of feet in length, r...
Read Less
Add this copy of Recreations in Mathematics and Natural Philosophy..., to cart. $74.26, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2010 by Nabu Press.
