cloaking


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cloak

 (klōk)
n.
1. A long, loose outer garment, usually having a hood and no sleeves.
2. Something that covers or conceals: a cloak of secrecy.
tr.v. cloaked, cloak·ing, cloaks
To cover or conceal with a cloak or something that acts like a cloak: mist that cloaks the mountains. See Synonyms at disguise, hide1.

[Middle English cloke, from Old North French cloque, cloak, bell (from its shape), from Medieval Latin clocca; see clock1.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
And find a way it has, since a team of researchers has recently managed to find a way to direct the currents and waves that are surrounding an object in a fluid, effectively "cloaking" the objects effect in the water and hiding its presence.
"Our work represents a breakthrough in the quest for invisibility cloaking," Jose Azana, one of the researchers involved in the work, said in a (https://www.osa.org/en-us/about_osa/newsroom/news_releases/2018/spectral_cloaking_could_make_objects_invisible_(1)/?utm_source=osaHome&utm_medium=slider&utm_term=sliderlink&utm_content=Optica%20Spectr) statement .
Luis Romero Cortes, a student in the lab who specialises in quantum optics, explained: "Conventional cloaking solutions rely on altering the propagation path of the illumination around the object to be concealed.
Metamaterial Cloaking. Cloaking is the ability to make a region of space, and everything in it, invisible to an external observer.
Most of the research activity has focused on the achievement of acoustic invisibility, or cloaking, that is, the total abatement of the scattering effects induced by an obstacle impinged by an acoustic perturbation.
The researchers said while their experiments involved cloaking a miniscule object they believe the technology could be made to conceal larger objects, with military and other possible applications.
They have resulted in several novel concepts and promising applications, such as cloaking devices [1-12], concentrators [13-15], wormholes [16] and hyperlenses [17].
As you can see in the photo above, and in the video below, the invisibility effect is rather effective - and, importantly, it creates very little "telltale" distortion that usually accompanies such early attempts at cloaking (the grid lines are perfectly straight and not magnified/minimized).
Recently, a review paper reviewed pointed out that the combination of "forward designs" and "inverse designs" rather than using a single cloaking strategy is very likely to make invisibility cloaks far more realistic.
Among various approaches proposed along this line, location cloaking is predominant [4-6].
User A sends a 3-anonymity query, at initial time [t.sub.1], {A, E, D} are the users waiting to be anonymized in the generated cloaked region; at [t.sub.2], the cloaked region maintains {A, E, D} as cloaking users, and adjusts the size of cloaked region according to the moving distances of the three users from time [t.sub.1] to [t.sub.2]; at [t.sub.3], the same process is executed; thus the adversary cannot get the real user by intersection of the consecutive cloaked regions.