cloak of invisibility

No Hogwarts Invitation Required: Invisibility Cloaks Move into the Real-life Classroom
‘Cloaking’ Device Uses Ordinary Lenses to Hide Objects Across Continuous Range of Angles
Do-It-Yourself Invisibility with 3-D Printing
‘Invisibility’ Cloak Could Protect Buildings from Earthquakes
New cloaking device is no mirage – but it’s like one
New Cloaking Method Could Shield Submarines From Sonar, Planes From Radar, Buildings From Earthquakes