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  2. The Two Pots - Wikipedia

    en.wikipedia.org/wiki/The_Two_Pots

    While the title of Aesop's fable is almost always given as "The Two Pots", La Fontaine's Fables contrast their different constituents in a rather different fable based on it, Le pot de terre et le pot de fer (Fables V.2). [5] In this the iron pot proposes a journey together to the clay pot, which is only persuaded by the stronger pot's offer to ...

  3. Magical objects in Harry Potter - Wikipedia

    en.wikipedia.org/wiki/Magical_objects_in_Harry...

    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 ...

  4. Harry Potter and the Philosopher's Stone - Wikipedia

    en.wikipedia.org/wiki/Harry_Potter_and_the...

    In 1999, Rowling sold the film rights of the first two Harry Potter books to Warner Bros. for a reported £1 million. [ 71 ] [ 72 ] Rowling demanded that the principal cast be kept strictly British, but allowed for the casting of Irish actors such as Richard Harris as Dumbledore and of foreign actors as characters of the same nationalities in ...

  5. Cloak of invisibility - Wikipedia

    en.wikipedia.org/wiki/Cloak_of_invisibility

    The mantle is described again, and in more detail, [1] 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 Mabinogi, in which it is used by Caswallawn to assassinate the seven stewards left behind by Bran the Blessed and usurp the throne ...

  6. Cloaking device - Wikipedia

    en.wikipedia.org/wiki/Cloaking_device

    An operational, non-fictional cloaking device might be an extension of the basic technologies used by stealth aircraft, such as radar-absorbing dark paint, optical camouflage, cooling the outer surface to minimize electromagnetic emissions (usually infrared), or other techniques to minimize other EM emissions, and to minimize particle emissions from the object.

  7. Metamaterial cloaking - Wikipedia

    en.wikipedia.org/wiki/Metamaterial_cloaking

    [2] A sphere with radius R 1 is chosen as the object to be hidden. The cloaking region is to be contained within the annulus R 1 < r < R 2. A simple transformation that achieves the desired result can be found by taking all fields in the region r < R 2 and compressing them into the region R 1 < r < R 2. The coordinate transformations do not ...

  8. Pot-in-pot refrigerator - Wikipedia

    en.wikipedia.org/wiki/Pot-in-pot_refrigerator

    A pot-in-pot refrigerator, clay pot cooler [1] or zeer (Arabic: زير) is an evaporative cooling refrigeration device which does not use electricity. It uses a porous outer clay pot (lined with wet sand) containing an inner pot (which can be glazed to prevent penetration by the liquid) within which the food is placed. The evaporation of the ...

  9. Invisibility Cloak - Wikipedia

    en.wikipedia.org/wiki/Invisibility_cloak

    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 ...