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Invisible Cloak - Online Essay

Invisible Cloak

The last few invisibility cloaks we've seen have relied on metamaterials to make tiny objects invisible to a specific wavelength of light. This "carpet cloak," from MIT, uses some calcite crystals to make much larger objects disappear in the visible spectrum.

The picture above basically tells the whole story: two calcite crystal prisms are glued together in such a way that a little wedge of space is created underneath. When an object, in this case a roll of pink paper, is placed inside the wedge, it vanishes. The whole point of this cloak is that the object isn't simply covered up; when you look at the crystal, it appears as though it's completely empty with a visible and flat bottom ...

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about the potential applications for their cloaking technology:

"A fully functional invisibility cloak can have important applications especially in areas of defense and security. The cloak can also be used to hide cables on the seabed or help biologists in marine research where fish or other ocean creatures are not disturbed."

Yep, never mind about super powers and saving the world and stuff, let's just focus on not freaking out fish.

Researchers say they are rapidly closing in on new types of materials that can throw a cloak of invisibility around objects, fulfilling a fantasy that is as old as ancient myths and as young as "Star Trek" and the Harry Potter novels.

Unlike those tales of fictional invisibility, the real-life technologies usually have a catch. Nevertheless, limited forms of invisibility might be available to the military sooner than you think.

"We're very confident that at radar frequencies, these materials can be implemented on a time scale of 18 ...

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Invisible Cloak. (2011, March 4). Retrieved November 23, 2024, from http://www.essayworld.com/essays/Invisible-Cloak/95517

"Invisible Cloak." Essayworld.com. Essayworld.com, 4 Mar. 2011. Web. 23 Nov. 2024. <http://www.essayworld.com/essays/Invisible-Cloak/95517>

"Invisible Cloak." Essayworld.com. March 4, 2011. Accessed November 23, 2024. http://www.essayworld.com/essays/Invisible-Cloak/95517.

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PAPER DETAILS

Added: 3/4/2011 02:05:47 PM
Submitted By: begumik
Category: Science & Nature
Type: Premium Paper
Words: 716
Pages: 3

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