Claim: A video shows a man demonstrating an invisibility cloak.
Verdict: REFUTES

Retrieved passages:
title: Cloak of invisibility
text: Mr Perczel says the cloak wearer can move around ever-changing backgrounds. Mr Perczel, from Hungary, came up with the idea under the guidance of "invisibility expert" Professor Ulf Leonhardt, who teaches at the university's school of physics and astronomy. The student recognised the potential of the invisible sphere and spent eight months fine tuning his project. The key development lies in the ability of the sphere, an optical device, to not only remain invisible itself but to slow light. According to Prof Leonhardt, all optical illusions can slow down rays of light and the sphere can be used to bend

title: Sousveillance
text: and documentation projects. Keeping the focus on himself and his surrounding has helped him connect to himself and the world around him. Artist, scientist, and inventor S. Mann also created a wearable interactive art piece, the HeartCam, July 2001 in order to reverse the male gaze. Others, including Nestle, have built upon this concept of reversing the "male gaze" using a bra as a point-of-view for a camera. Invisibility/Aposematic Suit, S. Mann, 2001, is a wearable art piece that has two modes of operation: it either (1) becomes "transparent", suggestive of a chameleon's invisibility cloak (to hide from predators). In

title: Cloak of invisibility
text: an optical medium, light rays can be bent around and made to propagate in closed loops... Janos Perczel, 22, an undergraduate student at St Andrews University in Fife, has developed an optical sphere which could be used to create an "invisibility cloak". He said that by slowing down light by way of an optical illusion, the light can then be bent around an object to "conceal" it. Attempts have already been made to create invisibility cloaks but research shows that efforts are limited because any cloak would only work within certain backgrounds. But by slowing down the rays of light,

title: Cloak of invisibility
text: does not realize apparently works only on elderly men. In "The Lord of the Rings", Frodo's elven cloak camouflaged him so that the enemy could see "nothing more than a boulder where the Hobbits were". Camouflaging cloaks form a central plot element in Samuel R. Delany's 1975 novel "Dhalgren". Cloaks of invisibility also exist in the "Harry Potter" series of novels by J.K. Rowling. Harry Potter uses a Cloak of Invisibility, that was passed down to him by his father, to sneak into forbidden areas of his school and remain unseen. It is later revealed that this specific cloak was

title: Invisibility in fiction
text: show up and so itself is not the subject of any special effects techniques, but the interaction of invisible subjects with the visible world does call for special effects, especially in the case of invisible people wearing visible clothing. Early films and television shows used wires and puppetry to simulate the existence of an invisible person, along with some scenes that used a matte process to delete certain elements in favor of the background. In "The Invisible Man" the initial shots swathed the actor's head in a black velvet hood and shot this against a black velvet background. Later, CGI

title: Cloak of invisibility
text: in camouflage. However, the moment they start to move, the scenery would begin to distort, revealing the person under the cloak. By slowing all of the light down with an invisible sphere, it does not need to be accelerated to such high speeds and can therefore work in all parts of the spectrum." Cloak of invisibility A cloak of invisibility is a fictional theme and a device under some scientific inquiry. 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

title: Cloak of invisibility
text: it real it would work exactly like Harry Potter's invisibility cloak," he said. "It's not going to be heavy because there's going to be very little metal in it." Furtherfurthermore, on April 30, 2009, two teams of scientists developed a cloak that rendered objects invisible to near-infrared light. Unlike its predecessors, this technology did not utilize metals, which improves cloaking since metals cause some light to be lost. Researchers mentioned that since the approach can be scaled down further in size, it was a major step towards a cloak that would work for visible light. The headlined claims that laboratory

title: The Invisible Man (2000 TV series)
text: by making it appear as though he has shot himself, or concealing his arms or legs so that he could pass as a handicapped person for investigative purposes. In addition, Darien acquires other invisibility properties such as "quicksilvering" other objects and even persons (like he does to Hobbes in "Cat & Mouse"). He is also able to "see" objects or persons rendered invisible (as shown in "Money For Nothing, Part 2", when he can see Arnaud covered with Quicksilver). This property is explained by the fact that Quicksilver can absorb other types of radiation, such as infrared and ultraviolet, despite

title: Cloak of invisibility
text: also imparts the ability to transform upon its wearer. When Fritz Lang adapted "Nibelungenlied" for the movie screen in his 1924 film "Die Nibelungen", Siegfried uses a veil or net of invisibility gained from the dwarf Alberich. Another film from the same year to use a cloak of invisibility was Raoul Walsh's "The Thief of Bagdad", in which the cloak plays a pivotal role. Edgar Rice Burroughs uses the idea of an invisibility cloak in his 1931 novel "A Fighting Man of Mars". The movie "Erik the Viking" humorously depicts the title character using a cloak of invisibility, which he

title: Cloak of invisibility
text: Cloak of invisibility A cloak of invisibility is a fictional theme and a device under some scientific inquiry. 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. Cloaks of invisibility are magical items found in folklore and fairy tales.

title: Cloak of invisibility
text: this illusion around an object, reflecting off it and making it appear to be invisible. Mr Perczel added: "When the light is bent it engulfs the object, much like water covering a rock sitting in a river bed, and carries on its path, making it seem as if nothing is there. Light however can only be sped up to a speed faster than it would travel in space, under certain conditions, and this restricts invisibility cloaks to work in a limited part of the spectrum, essentially just one colour. This would be ideal if somebody was planning to stand still

title: Griffin (The Invisible Man)
text: him all along as his vision operates in the infrared spectrum, a fact that he had hidden from Griffin. In the film version, the Invisible Man who joins the League is not Griffin (due to copyright issues), but Rodney Skinner (played by Tony Curran), a cheerful thief who stole the invisibility formula from the original Invisible Man (presumably Griffin). The fact that his skin is invisible is also related to his name of "Skinner". Skin samples of him are taken by Dorian Gray for Professor Moriarty, allowing him to duplicate the invisibility process, Contrary to the graphic novels, Skinner himself

title: Godsend (Heroes)
text: once conducted, and then sees the bearded man from his vision nonchalantly stealing from people he passes on the street. When Peter pursues him, the man is stunned that Peter can see him despite his power of invisibility. Because Peter is around him, Peter absorbs his ability and becomes invisible as well. The bearded man attacks Peter. At the very end of the episode, Niki is revealed to have been confined in a padded room in a psychiatric ward, bound in a straitjacket. Miserably, she asks God for help. As the lights switch off, Jessica says, "Who needs God when

title: Chroma key
text: blue covering over a part of his body to make it invisible in the final shot. This technique can be used to achieve an effect similar to that used in the "Harry Potter" films to create the effect of an invisibility cloak. The actor can also be filmed against a chroma-key background and inserted into the background shot with a distortion effect, in order to create a cloak that is marginally detectable. Difficulties emerge with blue screen when a costume in an effects shot must be blue, such as Superman's traditional blue outfit. In the 2002 film "Spider-Man", in scenes

title: John Pendry
text: he came up with the idea of bending light in such a way that it could form a container around an object which effectively makes the object invisible and produced a paper with David R. Smith of Duke University who demonstrated the idea at the frequency of microwaves. This idea, commonly known as the Invisibility cloak, has stimulated much recent work in the field of metamaterials. In 2009 he and Stefan Maier received a large grant from the Leverhulme Trust to develop the ideas of perfect lens and invisibility cloak in the optical range of light. In 2016 Sir John

title: Harry Potter and the Deathly Hallows – Part 1 (video game)
text: can progress through the level using the Polyjuice Potion, Peruvian Instant Darkness Powder or the Invisibility Cloak. While manoeuvring under the Invisibility Cloak the player must move slowly to ensure the stealth meter, on the bottom right hand corner of the screen, does not turn red. If the meter has turned red it means the player is in danger of getting caught and must stay still until the meter has re-generated. When the player gets close enough to an enemy while under the Invisibility Cloak they are able to cast a stunning spell at them, or use the shield charm

title: The Invisible Man
text: the invisibility. Now he imagines that he can make Kemp his secret confederate, describing his plan to begin a "Reign of Terror" by using his invisibility to terrorise the nation. Kemp has already denounced Griffin to the local authorities and is waiting for help to arrive as he listens to this wild proposal. When the authorities arrive at Kemp's house, Griffin fights his way out and the next day leaves a note announcing that Kemp himself will be the first man to be killed in the "Reign of Terror". Kemp, a cool-headed character, tries to organise a plan to use

title: Cloak of invisibility
text: light. In addition the researchers appear to be optimistic about a practical cloaking device in the future: Another design calls for tiny metal needles to be fitted into a hairbrush-shaped cone at angles and lengths that would force light to pass around the cloak. This would make everything inside the cone appear to vanish because the light would no longer reflect off it. "It looks pretty much like fiction, I do realize, but it's completely in agreement with the laws of physics," said lead researcher Vladimir Shalaev, a professor of electrical and computer engineering at Purdue. "Ideally, if we make

title: Invisibility
text: power of magic creates an effective means of invisibility by distracting anyone who might notice the character. But since the character is not truly invisible, the effect could be betrayed by mirrors or other reflective surfaces. Where magical invisibility is concerned, the issue may arise of whether the clothing worn by and any items carried by the invisible being are also rendered invisible. In general they are also regarded as being invisible, but in some instances clothing remains visible and must be removed for the full invisibility effect. Invisibility Invisibility is the state of an object that cannot be seen.

title: Magical objects in Harry Potter
text: Dementors' perception of humans is unhindered by invisibility cloaks, as they are blind and sense people through emotions. In the play "Harry Potter and the Cursed Child" Harry gifts the Invisibility Cloak to his eldest son James Potter, noting he'd "been going on about the Invisibility Cloak since time itself". However, James' younger brother Albus (the protagonist of the play) steals the Cloak and uses it to evade bullies at Hogwarts. A Foe-glass is a mirror that detects and shows its owner's enemies in or out of focus, depending on how close they are. Moody, in reality Barty Crouch, Jr.