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Invisibility in fiction is a common plot device in stories, plays, films, animated works, video games, and other media, found in both the fantasy and science fiction genres. In fantasy, invisibility is often invoked and dismissed at will by a person, with a magic spell or potion, or a cloak, ring or other object.
Invisibility perception depends on several optical and visual factors. [1] For example, invisibility depends on the eyes of the observer and/or the instruments used. Thus an object can be classified as "invisible" to a person, animal, instrument, etc. In research on sensorial perception it has been shown that invisibility is perceived in cycles ...
In the Harry Potter universe, an invisibility cloak is a rare type of cloak used to make the wearer invisible. Rowling's 2001 book Fantastic Beasts and Where to Find Them states that invisibility cloaks may be crafted from Demiguise pelts. Invisibility cloaks can also be ordinary cloaks with a Disillusionment Charm or a Bedazzlement Hex placed ...
The Ring of Gyges / ˈ dʒ aɪ ˌ dʒ iː z / (Ancient Greek: Γύγου Δακτύλιος, Gúgou Daktúlios, Attic Greek pronunciation: [ˈɡyːˌɡoː dakˈtylios]) is a hypothetical magic ring mentioned by the philosopher Plato in Book 2 of his Republic (2:359a–2:360d). [1]
Plasma stealth is a proposed process to use ionized gas to reduce the radar cross-section (RCS) of an aircraft.Interactions between electromagnetic radiation and ionized gas have been extensively studied for many purposes, including concealing aircraft from radar as stealth technology.