Please note that the content of this book primarily consists of articles
available from Wikipedia or other free sources online. Cloaking devices
are advanced stealth technologies still in development that will cause
objects, such as spaceships or individuals, to be partially or wholly
invisible to parts of the electromagnetic (EM) spectrum. Fictional
cloaking devices have been used as plot devices in various media for
many years, but developments in scientific research show that real-world
cloaking devices can obscure objects from at least one wavelength of EM
emissions. Scientists already use artificial materials called
metamaterials to bend light around an object.
