Spacecraft Invisibility: Is Cloaking Possible?

[caption id="attachment_5948" align="alignright" width="440"] Gravitational Lens - NASA[/caption] Have you ever looked for your keys but couldn’t find them? Even though they were right in front of you? The glasses might as well be invisible. If this has happened to you, you should get the concept of cloaking. Is cloaking possible? Cloaking—What Is It? To cloak is to covering or conceal an object, to make it invisible. Invisible at least from a portion of the electromagnetic spectrum. Not only would the object be invisible, but the surroundings would be seen. It's like something out of Star Trek. Is cloaking possible? Grasping the Idea Imagine you are outside. 25 feet in front of you is a French Poodle. You are looking at it, when a 2½- ton truck pulls between you…
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