Graphic Science: Engineering Drawing, Descriptive Geometry, Graphical Solutions pdf

Graphic Science: Engineering Drawing, Descriptive Geometry, Graphical Solutions.

Preface: from the time of hieroglyphic writing down to that of modern graphic description, man has known the need to represent his thoughts, discoveries, and inventions so that others may be informed. As our civilization becomes more complex, graphic representation, paralleling progress in science and engineering, likewise becomes more complex. Moreover, as the history of graphics is studied, one important aspect stands out: the fact that only graphically may some kinds of information be conveyed or certain problems solved—for example, the impossibility of describing complicated mechanisms by other than graphic means is well known. To the engineer, therefore, graphics is a lifeline, connecting thought, inxention, and research with the resulting actualities. To keep pace with advances in science and engineering, graphics in all its varied forms has been and is being refined in many ways. 

In the past, graphic training has emphasized engineering drawing as a language of communication. The textbook “Engineering Drawing,” by the authors of this volume, promotes the traditional conception and is currently being revised. Future re- visions are contemplated as new procedures are de- veloped, as changes come forward in the training of engineers, and as new standards are adopted for in- dustry. Nevertheless, it is well understood today that engineering thinking is directed toward the principle that the “art” of engineering is giv’ing way to the “science” of engineering. Consequently, to progress with this new conception, graphic instruction must now not only stress the communication phase but also emphasize the methods and procedures that will accomplish graphic determination and computation. Thus engineering drawing, or graphics, by carefully studied refinements and important additions over a period of many years, becomes more than a V language of communication: It is a science embracing both communication and graphic methods of problem solution. Graphic calculation is invaluable in the basic engineering of products, in the scientific investigations of pure and practical research, and in the solution of problems of operation and control. Many departments of instruction have now converted from the representational to the scientific approach to graphics. Others are either engaged in, or are contemplating, modifications of curriculum. Therefore, upon the premise that graphic methods are extremely important to the scientific training of engineers, this book has been built. It is not a “course book” but a text and reference containing much more than probably will be taught in any for- mal series of courses. The completeness is deemed necessary because of the varied requirements in different institutions and areas. 

The text is divided into three portions: (1) engineering drawing, the fundamentals of projection and the communication phase, (2) descriptive geometry, the solution of space proplems of points, lines, planes, and surfaces, and (3) graphical solutions, the solution of mathematical problems of particular interest to engineers. 

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