![]() ![]() Since then, physicists have been captivated by the possibility of invisibility, proposing a variety of theoretical and experimental techniques for making something hard to see. In 2006, the scientific journal Nature published a pair of papers by researchers from the University of St Andrews, Duke University and Imperial College London that demonstrated, theoretically, how to make an invisibility cloak – an object that guides light around a central region and leaves that region undetected. ![]() Until recently, it remained a complete fantasy. Invisibility, then, is sometimes seen as a blessing, sometimes as a curse. In this film version, a man uses invisibility technology to stalk and control his ex-girlfriend. One of the most recent tales is the movie The Invisible Man (2020), a reimagining of H G Wells’s classic novel. Stories of invisibility have been told ever since. In the 1st or 2nd century CE, for example, a Greek author now known as Pseudo-Apollodorus wrote about Perseus’ quest to kill the gorgon Medusa, aided by the Cap of Hades: ‘Wearing it, he saw whom he pleased, but was not seen by others.’ With the aid of the cap, Perseus was able to claim the head of Medusa and escape unseen from her sisters Stheno and Euryale. In the earliest imaginings, invisibility was a power bestowed by the gods. Invisibility – the power not to be seen – has captured the fascination and fantasies of people for literally thousands of years. ![]()
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