Last year physicists worked out the complex math required to make objects invisible by bending light around them. Based on this work, engineers at Purdue University in Indiana have designed a device that could one day make objects as large as a plane disappear. A cone fitted with tiny metal needles would force light to pass around it, making anything inside the cone appear to vanish. "Ideally, if we make it real it would work exactly like Harry Potter's invisibility cloak," said lead researcher Vladimir Shalaev. Read more at news.com.au(1).