Screws

Screws PDF

Author: Kirsten Chang

Publisher: Machines and Motion

Published: 2018

Total Pages: 0

ISBN-13: 9781624968587

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In this book, readers will learn about one of the six simple machines as described by Renaissance scientists. Vibrant, full-color photos and carefully leveled text will engage young readers as they learn how screws are used to lift or move objects. An activity provides step-by-step instructions for a specific, larger project, and a picture glossary reinforces new vocabulary. Children can learn more about screws online using our safe search engine that provides relevant, age-appropriate websites. Screws also features reading tips for teachers and parents, a table of contents, and an index. Screws is part of Jump!'s Machines and Motion series.

Twist, Dig, and Drill

Twist, Dig, and Drill PDF

Author: Michael Dahl

Publisher: Capstone Classroom

Published: 2006-01-01

Total Pages: 28

ISBN-13: 9781404819122

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Provides examples showing how screws are simple machines that make joining things together and moving, easier.

One Good Turn

One Good Turn PDF

Author: Witold Rybczynski

Publisher: Simon and Schuster

Published: 2001-09-11

Total Pages: 180

ISBN-13: 0684867303

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The Best Tool of the Millennium The seeds of Rybczynski's elegant and illuminating new book were sown by The New York Times, whose editors asked him to write an essay identifying "the best tool of the millennium." The award-winning author of Home, A Clearing in the Distance, and Now I Sit Me Down, Rybczynski once built a house using only hand tools. His intimate knowledge of the toolbox -- both its contents and its history -- serves him beautifully on his quest. One Good Turn is a story starring Archimedes, who invented the water screw and introduced the helix, and Leonardo, who sketched a machine for carving wood screws. It is a story of mechanical discovery and genius that takes readers from ancient Greece to car design in the age of American industry. Rybczynski writes an ode to the screw, without which there would be no telescope, no microscope -- in short, no enlightenment science. One of our finest cultural and architectural historians, Rybczynski renders a graceful, original, and engaging portrait of the tool that changed the course of civilization.

Freedom in Machinery: Volume 1, Introducing Screw Theory

Freedom in Machinery: Volume 1, Introducing Screw Theory PDF

Author: Jack Phillips

Publisher: Cambridge University Press

Published: 1984-12-20

Total Pages: 218

ISBN-13: 9780521236966

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Does a machine run well by virtue of its accuracies, or its freedoms? This work presents an exciting, diagrammatic display of the hidden geometry of freedom and constraint. It bolsters the imaginative design of robots, but applies across all fields of machinery. The figures and their captions comprise alone a self-standing story, and this connects effectively with the rigorously argued text. The seamless combination of the two volumes (1984, 1990) renders the internal cross-referencing (forward and backward within the volumes) easier to look up. The appearance of this paperback is a clear testament to the work's ongoing readership. The term screw theory occurs throughout. This relates (after Ball) to the book's philosophy; and one might equally mention kinetostatics (after Federhofer). An all-pervading, counter-intuitive fact accordingly presents itself: while, analogously, angular velocity relates to force, linear velocity relates to couple. A direct consequence of Freedom in Machinery is a more recent book by the same author. Specifically titled General Spatial Involute Gearing and published in Germany (2003), it exemplifies the many ways in which Freedom in Machinery clarifies the enigmatic field of spatial mechanism. That field continuously expands with the current, continuous thrust of ordinary engineering practice.

Get to Know Screws

Get to Know Screws PDF

Author: Paul Challen

Publisher: Crabtree Publishing Company

Published: 2009

Total Pages: 36

ISBN-13: 9780778744696

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Screws are everywhere! They help keep buildings together and help us move and lift things. Come inside this book for a fun and fascinating look at this simple machine. Kids will love the fun with screws section.

Analysis and Synthesis of Compliant Parallel Mechanisms—Screw Theory Approach

Analysis and Synthesis of Compliant Parallel Mechanisms—Screw Theory Approach PDF

Author: Chen Qiu

Publisher: Springer Nature

Published: 2020-06-23

Total Pages: 178

ISBN-13: 3030483134

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This book addresses the design of compliant mechanisms, presenting readers with a good understanding of both the solid mechanics of flexible elements and their configuration design, based on a mechanism-equivalent approach in the framework of screw theory. The book begins with the theoretical background of screw theory, and systematically addresses both the compliance characteristics of flexible elements and their configuration design. The book then covers a broad range of compliant parallel mechanism design topics, from stiffness to constraint decomposition, from conceptual design to dimensional design, and from analysis to synthesis, as well as the large deformation problem; this is followed by both simulations and physical experiments, offering readers a solid foundation and useful tools. Given its scope and the results it presents, the book will certainly benefit and inform future research on the topic. It offers a valuable asset for researchers, developers, engineers and graduate students with an interest in compliant mechanisms, robotics and screw theory.

Permission to Screw Up

Permission to Screw Up PDF

Author: Kristen Hadeed

Publisher: Penguin

Published: 2017-10-10

Total Pages: 274

ISBN-13: 1591848296

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The inspiring, unlikely, laugh-out-loud story of how one woman learned to lead–and how she ultimately succeeded, not despite her many mistakes, but because of them. This is the story of how Kristen Hadeed built Student Maid, a cleaning company where people are happy, loyal, productive, and empowered, even while they’re mopping floors and scrubbing toilets. It’s the story of how she went from being an almost comically inept leader to a sought-after CEO who teaches others how to lead. Hadeed unintentionally launched Student Maid while attending college ten years ago. Since then, Student Maid has employed hundreds of students and is widely recognized for its industry-leading retention rate and its culture of trust and accountability. But Kristen and her company were no overnight sensa­tion. In fact, they were almost nothing at all. Along the way, Kristen got it wrong almost as often as she got it right. Giving out hugs instead of feed­back, fixing errors instead of enforcing accountability, and hosting parties instead of cultivating meaning­ful relationships were just a few of her many mistakes. But Kristen’s willingness to admit and learn from those mistakes helped her give her people the chance to learn from their own screwups too. Permission to Screw Up dismisses the idea that leaders and orga­nizations should try to be perfect. It encourages people of all ages to go for it and learn to lead by acting, rather than waiting or thinking. Through a brutally honest and often hilarious account of her own strug­gles, Kristen encourages us to embrace our failures and proves that we’ll be better leaders when we do.

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