By Gary Westfahl

ISBN-10: 143444371X

ISBN-13: 9781434443717

This e-book gathers jointly a number of the illuminating essays on technology fiction and fable movie penned via an important critic within the SF box. The items are approximately prepared within the chronological order of whilst the films and tv courses being mentioned first seemed, with essays supplying extra common overviews clustered close to the start and finish of the amount, to supply the general air of secrecy of a historic survey. even though this booklet doesn't fake to supply a entire historical past of technology fiction and myth motion pictures, it does intermingle analyses of movies and television courses with a few discussions of comparable performs, novels, tales, and comedian books, really within the essays in this Island Earth and 2001: an area Odyssey and its sequels. Inciteful, wonderful, and whole of clever and witty observations approximately technology fiction and its occasionally curious courting with the visible media, those essays will either pride and entertain critics, lovers, and audience alike.

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A Sense-of-Wonderful Century: Explorations of Science Fiction and Fantasy Films

This ebook gathers jointly some of the illuminating essays on technology fiction and fable movie penned through a tremendous critic within the SF box. The items are approximately geared up within the chronological order of while the flicks and tv courses being mentioned first seemed, with essays delivering extra basic overviews clustered close to the start and finish of the amount, to supply the general charisma of a ancient survey.

Additional resources for A Sense-of-Wonderful Century: Explorations of Science Fiction and Fantasy Films

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Fig. 16. Different possibilities to form a hardened zone, when employing an intensity profile similar to that of Fig. 15. 37 split into two beams to treat both flanks, simultaneously. For this split-beam technique, a specially designed optic is required [14]. With the flexible beam shaping optic an intensity distribution was achieved, where the center can be positioned directly onto the edge with an angle of incidence of 45 0 on the flanks. The profile, see Fig. 15, was shaped to yield maximum power at the sides of the distribution and less power in the middle to prevent the edge from melting.

These investigations have demonstrated that, by applying linearly polarized laser light at large angle of incidence, it is possible to achieve hardening with a CO 2 -laser, even without coating. Further examples are given by Shibata [6] and Miyamoto [7]. It has to be noted, however, that more energy is needed. As in hardening, the energy coupling can be enhanced also in remelting processes by using oblique incidence of parallel polarized CO 2-laser light. This is demonstrated in Fig. 10 showing an increase of the molten area by a factor of approximately five when the angle of incidence is increased from 0° to 75°.

This approach allows the design and fabrication of workpieces of improved performance with an economical use of expensive and strategic materials, at the same time. In this field, laser technology is, in principle, offering many advantages. e. the heat source, is easily pointed to well-defined areas at the surface and the energy input per unit time and area is well controllable. This results in a low thermal load, and hence thermal distortion of the workpiece and in smaller efforts for finishing work.

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