Invisibility Cloaks
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Invisibility Cloaks
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Author : Holly Duhig
language : en
Publisher: Gareth Stevens Publishing LLLP
Release Date : 2017-12-15
Invisibility Cloaks written by Holly Duhig and has been published by Gareth Stevens Publishing LLLP this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-12-15 with Juvenile Nonfiction categories.
From Harry Potter to King Arthur, stories about invisibility cloaks have been around for hundreds or possibly thousands of years. It seems mere fantasy that something like that could exist, but today there are several different kinds of technology that could be used to make someone appear invisible, or at least very inconspicuous. Through direct explanations, this book covers the history of invisibility cloak stories and connects some of the coolest recent technology to these tales. Covering both STEM and literature components, this book will enchant sci-fi lovers and scientists alike.
What Would It Take To Make An Invisibility Cloak
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Author : Clara MacCarald
language : en
Publisher: Sci-Fi Tech
Release Date : 2021-03-04
What Would It Take To Make An Invisibility Cloak written by Clara MacCarald and has been published by Sci-Fi Tech this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-03-04 with Camouflage (Biology) categories.
In science fiction, invisibility cloaks let their users vanish from sight and sneak around unnoticed. How could one of these stealthy pieces of clothing work? Scientists have some ideas, which involve bending light. Discover the science and technology behind what it would take to make a real-life invisibility cloak!
Becoming Invisible From Camouflage To Cloaks
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Author : Carla Mooney
language : en
Publisher: Norwood House Press
Release Date : 2010-08-01
Becoming Invisible From Camouflage To Cloaks written by Carla Mooney and has been published by Norwood House Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-08-01 with Juvenile Nonfiction categories.
Since the beginning of time humans and animals have looked for ways to be less visible to opponents. From the art of camouflage to the science of stealth technology, ways have been developed to hide objects and people. Today, scientists are building an “invisibility cloak” that makes objects and people underneath it seem to disappear. Every great invention begins with a great idea! Read all the books in this series and learn about the history and impact of some of the most fascinating innovations and inventions of our time. Explore the idea’s early stages of development, problems encountered along the way, and how each great idea has influenced our lives. From popular culture and the environment to life-saving machines, learn about the ideas, people, and technologies that made it all happen. This series correlates with The Science, Technology, Engineering, and Math (S.T.E.M.) curriculum initiative.
The Invisibility Cloak
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Author : Ge Fei
language : en
Publisher: New York Review of Books
Release Date : 2016-10-11
The Invisibility Cloak written by Ge Fei and has been published by New York Review of Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-10-11 with Fiction categories.
A lightly surreal story of misfortune, menace, and high-end stereo equipment in the cutthroat, capitalistic world of modern China. An NYRB Classics Original The hero of The Invisibility Cloak lives in contemporary Beijing—where everyone is doing their best to hustle up the ladder of success while shouldering an ever-growing burden of consumer goods—and he’s a loser. Well into his forties, he’s divorced (and still doting on his ex), childless, and living with his sister (her husband wants him out) in an apartment at the edge of town with a crack in the wall the wind from the north blows through while he gets by, just, by making customized old-fashioned amplifiers for the occasional rich audio-obsessive. He has contempt for his clients and contempt for himself. The only things he really likes are Beethoven and vintage speakers. Then an old friend tips him off about a special job—a little risky but just don’t ask too many questions—and can it really be that this hopeless loser wins? This provocative and seriously funny exercise in the social fantastic by the brilliantly original Ge Fei, one of China’s finest living writers, is among the most original works of fiction to come out of China in recent years. It is sure to appeal to readers of Haruki Murakami and other fabulists of contemporary irreality.
Invisibility Cloaks
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Author : Holly Duhig
language : en
Publisher: Gareth Stevens Publishing LLLP
Release Date : 2017-12-15
Invisibility Cloaks written by Holly Duhig and has been published by Gareth Stevens Publishing LLLP this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-12-15 with Juvenile Nonfiction categories.
"From Harry Potter to King Arthur, stories about invisibility cloaks have been around for hundreds or possibly thousands of years. It seems mere fantasy that something like that could exist, but today there are several different kinds of technology that could be used to make someone appear invisible, or at least very inconspicuous. Through direct explanations, this book covers the history of invisibility cloak stories and connects some of the coolest recent technology to these tales. Covering both STEM and literature components, this book will enchant sci-fi lovers and scientists alike."
Cloaking Device
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Author : Fouad Sabry
language : en
Publisher: One Billion Knowledgeable
Release Date : 2022-08-12
Cloaking Device written by Fouad Sabry and has been published by One Billion Knowledgeable this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-08-12 with Technology & Engineering categories.
What Is Cloaking Device A cloaking device is a hypothetical or fictional stealth technology that may make things, such as spacecraft or persons, partly or fully invisible to sections of the electromagnetic (EM) spectrum. This makes the cloaking device a potential candidate for application in real-world stealth technology. Over the course of many years, many different forms of media have exploited fictitious cloaking technologies as narrative elements. How You Will Benefit (I) Insights, and validations about the following topics: Chapter 1: Cloaking device Chapter 2: Invisibility Chapter 3: Metamaterial Chapter 4: John Pendry Chapter 5: Nanophotonics Chapter 6: Cloak of invisibility Chapter 7: Nader Engheta Chapter 8: Negative-index metamaterial Chapter 9: Terahertz metamaterial Chapter 10: David R. Smith (physicist) Chapter 11: Photonic metamaterial Chapter 12: Nonlinear metamaterial Chapter 13: Metamaterial cloaking Chapter 14: Metamaterial absorber Chapter 15: History of metamaterials Chapter 16: Theories of cloaking Chapter 17: Transformation optics Chapter 18: Plasmonic metamaterial Chapter 19: Andrea Al Chapter 20: Illusion optics Chapter 21: Electromagnetic metasurface (II) Answering the public top questions about cloaking device. (III) Real world examples for the usage of cloaking device in many fields. (IV) 17 appendices to explain, briefly, 266 emerging technologies in each industry to have 360-degree full understanding of cloaking device' technologies. Who This Book Is For Professionals, undergraduate and graduate students, enthusiasts, hobbyists, and those who want to go beyond basic knowledge or information for any kind of cloaking device.
Studies Of Invisibility Cloak Based On Structured Dielectric Artificial Materials
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Author :
language : en
Publisher:
Release Date : 2016
Studies Of Invisibility Cloak Based On Structured Dielectric Artificial Materials written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Abstract : The invisibility cloak is the device that prevents the system including the cloak and the concealed target from detection. In 2006, the first invisibility cloak was realized for operating at microwave frequencies. That cloak was made of the resonant metamaterials composed of metallic inclusions. Such success inspired the intensive study on the invisibility devices for the last decade. However, the existing invisibility systems have the limitations in common that deteriorate the cloak efficiency and challenge the implementation. In this dissertation, we proposed the approaches to design the invisibility cloaks composed of the dielectric artificial materials in order to improve the cloaking performance and bring the cloaks to the practical. To reduce the complexity of implementation and broaden the operating bandwidth, the transmission cloak composed of the arrays of identical high permittivity dielectric cylinders was designed. The spatially dispersive profile of the effective refractive index was manipulated by controlling the periodicities of the array sections. The designed cloak achieved to guide the electromagnetic wave bypassing the concealed region at broadband in the full-wave simulations. To further enhance the bandwidth, reduce the complexity and accommodate large targets, we proposed the geometrical optics based transmission cloaks composed of the optical elements, i.e. prisms/lenses, made of homogenous and isotropic dielectric materials. The 2D cloak operating for TM incidence efficiently hide large targets at multiple bands with broad bandwidths in the simulations since the cloak possesses the preservation of both the energy and the phase. Based on the 2D cloak, two types of 3D cloaks, i.e. the extrusion cloaks and the rotation cloaks, were developed. The cloaking capability of the former type was confirmed computationally and experimentally. The latter type also achieved cloaking effect in the simulations, which showed the advantage of low sensitivity to the incident waves' polarizations and the great promise to the implementation. Furthermore, the superluminal effect supported in the photonic crystals made of high permittivity dielectrics was applied to the transmission cloak that was designed based on transformation optics. Following such approach, the elements in the cloak medium could exceed the subwavelength and operate off resonance.
Study On Transformation Based Invisibility Cloaks
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Author : Baile Zhang
language : en
Publisher:
Release Date : 2009
Study On Transformation Based Invisibility Cloaks written by Baile Zhang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
(cont.) It is seen that a square root transformation which forces the waves to be guided close to the outer boundary is more invisible than those generated by either linear or quadratic transformation. Simplified cylindrical cloaks may produce a larger scattering at nonnormal incidences than that from an object without any cloak. In addition, we suggest using a small number of homogeneous and anisotropic metamaterial layers to construct a practical cloak with satisfying performance with normal incidence and oblique incidence. Genetic algorithm was used to optimize the practical multi-layer structures. It is shown that using an optimized 4-layer cloak, the normalized scattering cross section from a perfect electric conductor cylinder can be reduced from 2.19 to 0.0039 with normal incidence. Another optimized 4-layer cloak working for the incidence of 30° is shown able to reduce the scattering cross section from 1.175 to 0.013. The latter cloak exhibits reduce scattering over a large range of incidence angles.
Where S My Invisibility Cloak
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Author : Elizabeth Gardner
language : en
Publisher:
Release Date : 2018
Where S My Invisibility Cloak written by Elizabeth Gardner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with JUVENILE NONFICTION categories.
Have you ever wished you could have Harry Potter’s invisibility cloak? At some point soon, you just might be able to get one! Scientists are experimenting with a special material that bends light so the material is concealed. They still have a long way to go, but if they succeed, it could be one of the coolest inventions of the century!
Microwave Invisibility Cloaks Based On Frequency Selective Surfaces
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Author : Pedro Yuste Gallego
language : en
Publisher:
Release Date : 2016
Microwave Invisibility Cloaks Based On Frequency Selective Surfaces written by Pedro Yuste Gallego and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
In this report the successful design, manufacturing and testing of Mantle Cloaking is presented. This relatively new technique goes beyond traditional metamaterial-based alternatives in the search for effective invisibility at the microwave range. In lieu thereof, Scattering Cancellation consists in optimizing the main coefficient affecting the scattered field with the aim of making it as low as possible. To do that at a certain frequency, the surface impedance of the cloak that provides this minimum value has to be calculated and properly manufactured. Since the cell surface impedance of Frequency Selective Surfaces can be mathematically characterized, this work will focus on the verification of every outcome and the computation of the impedance of the entire cloak from the point of view of simulation. Once this is confirmed, real measurements have determined the degree of reliability of the method and the accuracy of the results.