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Invisibility Cloak (Harry Potter)
Invisibility Cloak may refer to: * Cloak of invisibility, a theme that has occurred in fiction ** Invisibility cloak (''Harry Potter''), a specific instance in the ''Harry Potter'' series * Cloaking device, technology for partial or full invisibility to parts of the electromagnetic or acoustic spectrums ** Metamaterial cloaking, a type of cloaking using metamaterials * Cap of invisibility In classical mythology, the Cap of Invisibility (Ἅϊδος κυνέη ''(H)aïdos kyneē'' in Greek, lit. dog-skin of Hades) is a helmet or cap that can turn the wearer invisible, also known as the Cap of Hades or Helm of Hades. Wearers of the c ... (aidos kyneê in Greek), a mysterious helmet or cap that possesses the ability to turn the wearer invisible *''The Invisibility Cloak'', a short novel by Chinese author Ge Fei. {{dab ...
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Cloak Of Invisibility
A cloak of invisibility is an item that prevents the wearer from being seen. In folklore, mythology and fairy tales, a cloak of invisibility appears either as a magical item used by duplicitous characters or an item worn by a hero to fulfill a quest. It is a common theme in Welsh and Germanic folklore, and may originate with the cap of invisibility seen in ancient Greek myths. The motif falls under "D1361.12 magic cloak of invisibility" in the Stith Thompson motif index scheme. In folklore Cloaks of invisibility are magical items found in folklore and fairy tales. Such cloaks are common in Welsh mythology; a "Mantle of Invisibility" is described in the tale ''Culhwch and Olwen'' (c. 1100) as one of King Arthur's most prized possessions.Stephens (1998) p. 479 The mantle is described again, and in more detail, in the ''Breuddwyd Rhonabwy,'' and is later listed as one of the Thirteen Treasures of the Island of Britain. A similar mantle appears in the Second Branch of the Mab ...
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Invisibility Cloak (Harry Potter)
Invisibility Cloak may refer to: * Cloak of invisibility, a theme that has occurred in fiction ** Invisibility cloak (''Harry Potter''), a specific instance in the ''Harry Potter'' series * Cloaking device, technology for partial or full invisibility to parts of the electromagnetic or acoustic spectrums ** Metamaterial cloaking, a type of cloaking using metamaterials * Cap of invisibility In classical mythology, the Cap of Invisibility (Ἅϊδος κυνέη ''(H)aïdos kyneē'' in Greek, lit. dog-skin of Hades) is a helmet or cap that can turn the wearer invisible, also known as the Cap of Hades or Helm of Hades. Wearers of the c ... (aidos kyneê in Greek), a mysterious helmet or cap that possesses the ability to turn the wearer invisible *''The Invisibility Cloak'', a short novel by Chinese author Ge Fei. {{dab ...
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Cloaking Device
A cloaking device is a hypothetical or fictional stealth technology that can cause objects, such as spaceships or individuals, to be partially or wholly invisible to parts of the electromagnetic (EM) spectrum. Fictional cloaking devices have been used as plot devices in various media for many years. Developments in scientific research show that real-world cloaking devices can obscure objects from at least one wavelength of EM emissions. Scientists already use artificial materials called metamaterials to bend light around an object. However, over the entire spectrum, a cloaked object scatters more than an uncloaked object. Conceptual origins ''Star Trek'' screenwriter Paul Schneider, inspired in part by the 1958 film ''Run Silent, Run Deep,'' and in part by ''The Enemy Below,'' which had been released in 1957, imagined cloaking as a space-travel analog of a submarine submerging, and employed it in the 1966 ''Star Trek'' episode " Balance of Terror", in which he introduced the ...
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Metamaterial Cloaking
Metamaterial cloaking is the usage of metamaterials in an cloaking device, invisibility cloak. This is accomplished by manipulating the paths traversed by light through a novel optical material. Metamaterials direct and control the Wave propagation, propagation and transmission of specified parts of the EM spectrum, light spectrum and demonstrate the potential to render an object seemingly wikt:invisible, invisible. Metamaterial cloaking, based on transformation optics, describes the process of shielding something from view by controlling electromagnetic radiation. Objects in the defined location are still present, but incident waves are guided around them without being affected by the object itself. Electromagnetic metamaterials ''Electromagnetic metamaterials'' respond to chosen parts of radiated light, also known as the electromagnetic spectrum, in a manner that is difficult or impossible to achieve with natural materials. In other words, these metamaterials can be further d ...
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Cap Of Invisibility
In classical mythology, the Cap of Invisibility (Ἅϊδος κυνέη ''(H)aïdos kyneē'' in Greek, lit. dog-skin of Hades) is a helmet or cap that can turn the wearer invisible, also known as the Cap of Hades or Helm of Hades. Wearers of the cap in Greek myths include Athena, the goddess of wisdom, the messenger god Hermes, and the hero Perseus. Those wearing the Cap become invisible to other supernatural entities, akin to a cloud of mist sometimes used to remain undetectable. Origins One ancient source that attributes a special helmet to the ruler of the underworld is the '' Bibliotheca'' (2nd/1st century BC), in which the Uranian Cyclops give Zeus the lightning bolt, Poseidon the trident, and a helmet ''(kyneê)'' to Hades (or Pluto) in their war against the Titans. In classical mythology the helmet is regularly said to belong to the god of the underworld. Rabelais calls it the Helmet of Pluto, and Erasmus the Helmet of Orcus. The helmet becomes proverbial for those who c ...
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