Search Results: 'Art of Dialling'

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6 results for "Art of Dialling"
The Art Of Dialling (1638) By Samuel Foster
Paperback: $18.00
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Samuel Foster’s The Art of Dialling is particularly noteworthy for two reasons. First, it contains the first appearance of dialing scales. For over two centuries following Foster, the latitude... More > and hour scales he introduces in this book were recognized as providing the simplest means for laying out hour lines. Although George Serle was probably the first to put the scales on a ruler, he himself clearly attributes their invention to Foster. Second, it includes an interesting approach to drawing a dial on an arbitrary plane: Foster demonstrates how any plane can be treated as though it were the special case of a direct east - west plane, and then he completely solves the special case. This book consists of a facsimile reprint of the 1638 edition of The Art of Dialling. It also includes the full text of the 1675 edition produced by Leybourn and a paragraph by paragraph comparison of the two.< Less
Dialling. Or The Art Of Drawing Dials (1770) By William Emerson
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Emerson (1701-82) was a schoolteacher and mathematician. He became well known for his “comprehensive grasp of all existing knowledge in all branches of his subject”. He published a... More > defense of Newton’s Principia and authored a textbook on fluxions (calculus). Even 80 years after his death, “the works of this able mathematician…[were] still in high estimation”. “[T]he first section contains the grounds of this art; by shewing how the several requisites are to be found… from the principles of spherical trigonometry. The second section contains the practice, and that three different ways. 1. Geometrically, by rule and compass, which depends upon the gnomonic projection of the sphere… 2. By trigonometrical calculation… which is the most exact way. 3. By the lines upon Collin’s Dialling scale, which is a method extremely easy and ready. The third section shews the way of making some other sorts of dials; and drawing the furniture upon any common diall.”< Less
The Art Of Dialling By The Gnomical Scale (1679) By Samuel Sturmy
Paperback: $16.00
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This is the seventh book from Sturmy’s very popular The Mariners Magazine – a warehouse of valuable information for English mariners. Sturmy’s work originally appeared in 1669, and... More > subsequently went through 3 more editions, “diligently revised and carefully corrected” by mathematician John Colson. This is the second edition. Sturmy’s ‘gnomical scale’ is equivalent to the dialing scales that became popular in the 17th century. (Unlike other entries in the collection, this reprint is done with modern fonts; the graphics are facsimile reproductions).< Less
A New And Easie Method To The Art Of Dyalling (1688) By Thomas Strode
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To The Reader. Courteous Reader, This was chiefly composed for some near Relations; but the Method being Natural, Easie, and not Common, I think I ought to communicate, and not to Bury it with me. ... More > I do not Publish this as to prefer it before Trigonometrical Calculation of Dyals, for no way can be Exacter than that; but this is to save that Labour in Young Beginners, lest they should be dejected with the tediousness of the other: And this Discourse but little short in Exactness with that.…< Less
The Spot-Dial (1687) By Gilbert Clerke
Paperback: $14.00
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Clerke (1626-1697?) gave private lessons in the mathematical arts and produced custom-made sundials. In 1682 he published Oughtredus explicatus, an edition of William Oughtred’s famous 1647... More > algebra textbook Clavis Mathematica. Clerke added a section on dialling, in which he described his invention of the spot-dial. Some years later, he was prevailed upon to write this brief English treatment of the dial. “The Use of this Dial is to see the Hour by the Rays of the Sun passing through a Hole, and terminated in a Glass set in a Frame within the House against the Window, the Ground of it is the same with that of the Sun’s Light passing through a Hole in the Window, and intercepted by a String, and of the Ceiling-Dial, where the Reflecting-Glass is supposed to be a Point in the Style.”< Less
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